Biosphere Online Test 9th Social Science Lesson 23 Questions in English
Biosphere Online Test 9th Social Science Lesson 23 Questions in English
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                        Question 1 of 38
1. Question
1. Which of the following statement is correct?
1. Biosphere, the fourth sphere of the Earth, is a life supporting layer that exists on the earth’s surface
2. This layer on earth encompasses the Lithosphere, Hydrosphere and Atmosphere.
3. It includes flora and fauna that thrive on or near the earth’s surface.Correct
Biosphere, the fourth sphere of the Earth, is a life supporting layer that exists on the earth’s surface. This layer on earth encompasses the Lithosphere, Hydrosphere and Atmosphere. It includes flora and fauna that thrive on or near the earth’s surface. The area in which an animal, plant or micro-organism lives is called its habitat. A wide variety of plants and animals live in a particular habitat known as biodiversity.
Incorrect
Biosphere, the fourth sphere of the Earth, is a life supporting layer that exists on the earth’s surface. This layer on earth encompasses the Lithosphere, Hydrosphere and Atmosphere. It includes flora and fauna that thrive on or near the earth’s surface. The area in which an animal, plant or micro-organism lives is called its habitat. A wide variety of plants and animals live in a particular habitat known as biodiversity.
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                        Question 2 of 38
2. Question
2. What is the approximate vertical range of Bio-sphere?
Correct
The vertical range of the biosphere is approximately 20 km, which is measured from the ocean floor to the troposphere. However, most plants and animals live in a very narrow section for about 1 km above and below the Mean Sea Level (MSL). Biosphere is made up of different ecosystems and biomes. All living things, large or small, are grouped into species.
Incorrect
The vertical range of the biosphere is approximately 20 km, which is measured from the ocean floor to the troposphere. However, most plants and animals live in a very narrow section for about 1 km above and below the Mean Sea Level (MSL). Biosphere is made up of different ecosystems and biomes. All living things, large or small, are grouped into species.
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                        Question 3 of 38
3. Question
3. Assertion(A): An ecosystem is a community, where all living organisms live and interact with one another and also with their non-living environment
Reason(R): Biosphere harbours all ecosystems on the earth and sustains life forms including
MankindCorrect
An ecosystem is a community, where all living organisms live and interact with one another and also with their non-living environment such as land, soil, air, water etc. Ecosystems range in size from the smallest units (Eg: bark of a tree) that can sustain life to the global ecosystem or ecosphere. (Eg: Cropland, Pond ecosystem, Forest ecosystem, Desert ecosystem etc.). Biosphere harbours all ecosystems on the earth and sustains life forms including mankind.
Incorrect
An ecosystem is a community, where all living organisms live and interact with one another and also with their non-living environment such as land, soil, air, water etc. Ecosystems range in size from the smallest units (Eg: bark of a tree) that can sustain life to the global ecosystem or ecosphere. (Eg: Cropland, Pond ecosystem, Forest ecosystem, Desert ecosystem etc.). Biosphere harbours all ecosystems on the earth and sustains life forms including mankind.
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                        Question 4 of 38
4. Question
4. The branch of science that deals about ecosystem is called_______
Correct
The branch of science that deals about ecosystem is called Ecology. A person who studies ecology is referred to as an Ecologist.
Incorrect
The branch of science that deals about ecosystem is called Ecology. A person who studies ecology is referred to as an Ecologist.
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                        Question 5 of 38
5. Question
5. Which of the following is/are Abiotic factor?
1. Soil
2. Water
3. Algae
4. LandCorrect
An ecosystem consists of three basic components, namely A) Abiotic components B) Biotic components and C) Energy component
Abiotic components include the non-living, inorganic, physical and chemical factors in the environment. Eg. Land, Air, Water, Calcium, Iron etc.Incorrect
An ecosystem consists of three basic components, namely A) Abiotic components B) Biotic components and C) Energy component
Abiotic components include the non-living, inorganic, physical and chemical factors in the environment. Eg. Land, Air, Water, Calcium, Iron etc. - 
                        Question 6 of 38
6. Question
6. Which of the following statement is correct?
1. Biotic components include plants, animals and micro- organisms.
2. Producers are self- nourishing components of the ecosystem
3. Consumers are those that depend on producers, directly or indirectly.Correct
Biotic components include plants, animals and micro-organisms. Biotic components can be classified into three categories:
• Producers are self-nourishing components of the ecosystem. Hence, they are called Autotrophs. They are found both on land and water. Eg. Plants, Algae, Bacteria etc.
• Consumers are those that depend on producers, directly or indirectly. Hence, they are called HeterotrophsIncorrect
Biotic components include plants, animals and micro-organisms. Biotic components can be classified into three categories:
• Producers are self-nourishing components of the ecosystem. Hence, they are called Autotrophs. They are found both on land and water. Eg. Plants, Algae, Bacteria etc.
• Consumers are those that depend on producers, directly or indirectly. Hence, they are called Heterotrophs - 
                        Question 7 of 38
7. Question
. Match the following
I. Primary consumers 1. Lion
II. Secondary consumers 2. Owl
III. Tertiary consumers 3. Zebra
IV. Decomposer 4. MushroomCorrect
The common categories of consumer are:
• Primary consumers depend on producers for their food. They are exclusively herbivores. Eg. zebra, goat etc.
• Secondary consumers are small carnivores i.e., they consume herbivores. Eg. lion, snake etc.
• Tertiary consumers are top carnivores that prey on both herbivores and carnivores. Eg. owl, crocodile etc.
• Decomposers are some organisms that are incapable of preparing its own food. They live on dead and decaying plants and animals. Hence, they are called Saprotrophs. Eg. fungus, mushrooms etcIncorrect
The common categories of consumer are:
• Primary consumers depend on producers for their food. They are exclusively herbivores. Eg. zebra, goat etc.
• Secondary consumers are small carnivores i.e., they consume herbivores. Eg. lion, snake etc.
• Tertiary consumers are top carnivores that prey on both herbivores and carnivores. Eg. owl, crocodile etc.
• Decomposers are some organisms that are incapable of preparing its own food. They live on dead and decaying plants and animals. Hence, they are called Saprotrophs. Eg. fungus, mushrooms etc - 
                        Question 8 of 38
8. Question
8. Which of the following statement is correct?
1. All organisms in the biosphere use energy to work and convert one form of energy into another.
2. Water is the ultimate source of energy for the biosphere as a whole
3. The producers, consumers and the decomposers contribute a lot to the energy flow in an ecosystem.Correct
All organisms in the biosphere use energy to work and convert one form of energy into another. The Sun is the ultimate source of energy for the biosphere as a whole. The solar energy gets transformed into other forms of energy through the various components in the ecosystem. The producers, consumers and the decomposers contribute a lot to the energy flow in an ecosystem.
Incorrect
All organisms in the biosphere use energy to work and convert one form of energy into another. The Sun is the ultimate source of energy for the biosphere as a whole. The solar energy gets transformed into other forms of energy through the various components in the ecosystem. The producers, consumers and the decomposers contribute a lot to the energy flow in an ecosystem.
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                        Question 9 of 38
9. Question
9. Assertion(A): The living organisms form an interacting set of flora and fauna which are organized
into trophic levels, food chains and food webs
Reason(R): Energy flow generally takes place in a hierarchical order in an ecosystem through
various levels.Correct
The living organisms form an interacting set of flora and fauna which are organized into trophic levels, food chains and food webs. The functioning of an ecosystem depends on the pattern of the energy flow, as it helps in the distribution and circulation of the organic and inorganic matter within an ecosystem. Energy flow generally takes place in a hierarchical order in an ecosystem through various levels. These levels are called trophic levels.
Incorrect
The living organisms form an interacting set of flora and fauna which are organized into trophic levels, food chains and food webs. The functioning of an ecosystem depends on the pattern of the energy flow, as it helps in the distribution and circulation of the organic and inorganic matter within an ecosystem. Energy flow generally takes place in a hierarchical order in an ecosystem through various levels. These levels are called trophic levels.
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                        Question 10 of 38
10. Question
10. A system of interlocking and interdependent food chains is called a______
Correct
The chain of transformation of energy from one group of organisms to another, through various trophic levels is called a food chain. A system of interlocking and interdependent food chains is called a food web.
Incorrect
The chain of transformation of energy from one group of organisms to another, through various trophic levels is called a food chain. A system of interlocking and interdependent food chains is called a food web.
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                        Question 11 of 38
11. Question
11. Which of the following statement is correct?
1. Biodiversity or biological diversity refers to a wide variety of living organisms which live in a habitat.
2. In biodiversity, each species, no matter how big or small, has an important role to play in the ecosystem.
3. It maintains the ecological balance and facilitates social benefits such as tourism, education, research etc. over an areaCorrect
Biodiversity or biological diversity refers to a wide variety of living organisms (plants, animals and other micro-organisms) which live in a habitat. It is highly influenced by topography, climate as well as human activities. It represents the strength of the biological resources of a place on earth. In biodiversity, each species, no matter how big or small, has an important role to play in the ecosystem. It maintains the ecological balance and facilitates social benefits such as tourism, education, research etc. over an area.
Incorrect
Biodiversity or biological diversity refers to a wide variety of living organisms (plants, animals and other micro-organisms) which live in a habitat. It is highly influenced by topography, climate as well as human activities. It represents the strength of the biological resources of a place on earth. In biodiversity, each species, no matter how big or small, has an important role to play in the ecosystem. It maintains the ecological balance and facilitates social benefits such as tourism, education, research etc. over an area.
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                        Question 12 of 38
12. Question
12. Assertion(A): The extinction of species (flora and fauna) due to human and natural influences is
called loss of biodiversity
Reason(R): A healthy eco system provides clean water, pure water, enriched soil, food, raw
materials, medicines etc.Correct
The extinction of species (flora and fauna) due to human and natural influences is called loss of biodiversity. A healthy eco system provides clean water, pure water, enriched soil, food, raw materials, medicines etc. Hence stable biosphere has to be conserved.
Incorrect
The extinction of species (flora and fauna) due to human and natural influences is called loss of biodiversity. A healthy eco system provides clean water, pure water, enriched soil, food, raw materials, medicines etc. Hence stable biosphere has to be conserved.
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                        Question 13 of 38
13. Question
13. Which of the following statement is correct?
1. A biome is a geographically extensive ecosystem where all flora and fauna are found collectively.
2. Biomes are only defined by biotic factors
3. It is the total assemblage of plant and animal life interacting within the biosphereCorrect
A biome is a geographically extensive ecosystem where all flora and fauna are found collectively. It is the total assemblage of plant and animal life interacting within the biosphere. Biomes are defined by abiotic factors like, relief, climate, soils and vegetation. They are classified into two broad categories, terrestrial biomes and aquatic biomes.
Incorrect
A biome is a geographically extensive ecosystem where all flora and fauna are found collectively. It is the total assemblage of plant and animal life interacting within the biosphere. Biomes are defined by abiotic factors like, relief, climate, soils and vegetation. They are classified into two broad categories, terrestrial biomes and aquatic biomes.
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                        Question 14 of 38
14. Question
14. Which of the following region is considered as a hot-spot?
Correct
An ecological region that has lost more than 70% of its original habitat is considered a hotspot. Hotspots in India are the Himalayas, Western Ghats, Indo Burma Region and Sundaland. There are 34 areas around the world which are qualified as biodiversity hotspots.
Incorrect
An ecological region that has lost more than 70% of its original habitat is considered a hotspot. Hotspots in India are the Himalayas, Western Ghats, Indo Burma Region and Sundaland. There are 34 areas around the world which are qualified as biodiversity hotspots.
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                        Question 15 of 38
15. Question
15. Which of the following are Some of the major terrestrial biomes of the world?
1. Tropical Forest Biomes
2. Tropical Savanna Biomes
3. Tundra Biomes
4. Desert BiomesCorrect
Terrestrial biomes are a group of living organisms that live and interact with one another on land. They are mainly determined by temperature and rainfall. Some of the major terrestrial biomes of the world are A. Tropical Forest Biomes B. Tropical Savanna Biomes C. Desert Biomes D. Temperate Grassland Biomes E. Tundra Biomes
Incorrect
Terrestrial biomes are a group of living organisms that live and interact with one another on land. They are mainly determined by temperature and rainfall. Some of the major terrestrial biomes of the world are A. Tropical Forest Biomes B. Tropical Savanna Biomes C. Desert Biomes D. Temperate Grassland Biomes E. Tundra Biomes
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                        Question 16 of 38
16. Question
16. Which of the following are included in Tropical Forest Biomes?
1. evergreen rainforest
2. seasonal deciduous forest
3. SundarbansCorrect
The tropical forest biome is comprised of several sub-biomes, including evergreen rainforest, seasonal deciduous forest etc. Tropical forests have the highest biodiversity and primary productivity of any of the terrestrial biomes.
Incorrect
The tropical forest biome is comprised of several sub-biomes, including evergreen rainforest, seasonal deciduous forest etc. Tropical forests have the highest biodiversity and primary productivity of any of the terrestrial biomes.
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                        Question 17 of 38
17. Question
17. Which of the following are major of Tropical Forest Biomes?
1. Amazon basin
2. Congo basin
3. Nalathanithevu
4. Indonesian islandsCorrect
The Amazon basin, Congo basin and Indonesian islands are the major regions of Tropical Forest Biomes. These regions have very dense forests and so have great economic importance. Human settlements are found scattered here. They sustain their livelihood through food gathering, fishing, lumbering and shifting cultivation.
Incorrect
The Amazon basin, Congo basin and Indonesian islands are the major regions of Tropical Forest Biomes. These regions have very dense forests and so have great economic importance. Human settlements are found scattered here. They sustain their livelihood through food gathering, fishing, lumbering and shifting cultivation.
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                        Question 18 of 38
18. Question
18. Which of the following fever is/are common in Tropical Forest Biomes?
Correct
Due to the humid nature of Tropical Forest Biomes, the people get afflicted to tropical diseases like malaria, yellow fever etc. The chief trees found here are rubber, bamboo, ebony, etc. Bats, pheasants, jaguars, elephants, monkeys etc. are the important birds and animals found here.
Incorrect
Due to the humid nature of Tropical Forest Biomes, the people get afflicted to tropical diseases like malaria, yellow fever etc. The chief trees found here are rubber, bamboo, ebony, etc. Bats, pheasants, jaguars, elephants, monkeys etc. are the important birds and animals found here.
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                        Question 19 of 38
19. Question
19. Which of the following plant can be used to treat Cancer?
Correct
The U.S. National Cancer Institute has identified about 70% of the plants used for treating cancer. Which are found only in rain forests. E.g. Lapacho
Incorrect
The U.S. National Cancer Institute has identified about 70% of the plants used for treating cancer. Which are found only in rain forests. E.g. Lapacho
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                        Question 20 of 38
20. Question
20. Tropical grasslands are generally found between___ forests and____
Correct
Tropical grasslands are generally found between tropical forests and deserts. Tropical Savanna biomes are found between 10o to 20o N and S latitudes. These grasslands are generally flat and are found in the Sahel, south of Sahara in East Africa and in Australia.
Incorrect
Tropical grasslands are generally found between tropical forests and deserts. Tropical Savanna biomes are found between 10o to 20o N and S latitudes. These grasslands are generally flat and are found in the Sahel, south of Sahara in East Africa and in Australia.
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                        Question 21 of 38
21. Question
21. Which of the following are the features of Tropical Savanna (Grasslands) Biomes?
1. Hot
2. Dry
3. Wet
4. Low rainfallCorrect
Tropical Savanna (Grasslands) Biomes is generally hot and dry and experiences moderate to low rainfall. So, the grass which grow here are tall and sharp. Hence the chief occupation of the people found here is herding. The primitive people living here are nomadic. The common animals found here are the lion, leopard, tiger, deer, zebra, giraffe etc. Flora such as Rhodes grass, red oats grass, lemon grass etc. are found in this biome.
Incorrect
Tropical Savanna (Grasslands) Biomes is generally hot and dry and experiences moderate to low rainfall. So, the grass which grow here are tall and sharp. Hence the chief occupation of the people found here is herding. The primitive people living here are nomadic. The common animals found here are the lion, leopard, tiger, deer, zebra, giraffe etc. Flora such as Rhodes grass, red oats grass, lemon grass etc. are found in this biome.
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                        Question 22 of 38
22. Question
22. Which of the following fauna are threatened by parts of the Savanna grasslands are being
converted into farmland?Correct
Of late, parts of the Savanna grasslands are being converted into farmlands, which pose a great threat to the wide range of fauna. For E.g. The population of the big cats like cheetah, lion etc. are dwindling drastically.
Incorrect
Of late, parts of the Savanna grasslands are being converted into farmlands, which pose a great threat to the wide range of fauna. For E.g. The population of the big cats like cheetah, lion etc. are dwindling drastically.
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                        Question 23 of 38
23. Question
23. What is the annual rainfall of Desert biomes?
Correct
Deserts are usually found on the western margins of the continents between 20° and 30° N and S latitudes. The annual rainfall is less than 25 cm in these regions.
Incorrect
Deserts are usually found on the western margins of the continents between 20° and 30° N and S latitudes. The annual rainfall is less than 25 cm in these regions.
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                        Question 24 of 38
24. Question
24. Which of the following statement is correct?
1. Due to the lack of rainfall and arid conditions, these regions do not possess any vegetation
2. It has a special vegetation type called Xerophytes
3. Drought resistant thorny scrubs and bushes, palms are found here.Correct
Due to the lack of rainfall and arid conditions, these regions do not possess any vegetation but have special vegetation type called Xerophytes. As the soil is sandy and saline, deserts remain agriculturally unproductive. Drought resistant thorny scrubs and bushes, palms are found here.
Incorrect
Due to the lack of rainfall and arid conditions, these regions do not possess any vegetation but have special vegetation type called Xerophytes. As the soil is sandy and saline, deserts remain agriculturally unproductive. Drought resistant thorny scrubs and bushes, palms are found here.
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                        Question 25 of 38
25. Question
25. Which of the following are mostly found in Desert biomes?
1. Lizard
2. Snake
3. Black Chetah
4. ScorpionsCorrect
Tribal people who live here practice food gathering and hunting. They move their temporary settlements frequently in search of pastures. Transportation becomes very difficult here and is carried on by camels. Reptiles like snakes, lizards, scorpions etc., are most commonly found here.
Incorrect
Tribal people who live here practice food gathering and hunting. They move their temporary settlements frequently in search of pastures. Transportation becomes very difficult here and is carried on by camels. Reptiles like snakes, lizards, scorpions etc., are most commonly found here.
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                        Question 26 of 38
26. Question
26. Which of the following statement about Oases is correct?
1. Oases are fed by springs.
2. An oasis is a Salt water source found in deserts and semi-arid regions
3. Crops like date palms, figs, citrus fruits, maize etc. are cultivated near these oases.Correct
An oasis is a fertile fresh water source found in deserts and semi-arid regions. Oases are fed by springs. Crops like date palms, figs, citrus fruits, maize etc. are cultivated near these oases.
Incorrect
An oasis is a fertile fresh water source found in deserts and semi-arid regions. Oases are fed by springs. Crops like date palms, figs, citrus fruits, maize etc. are cultivated near these oases.
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                        Question 27 of 38
27. Question
27. Which of the following are the features of Temperate grassland biomes?
1. They are found near the coastal plains of the continent
2. They are characterized by large seasonal temperature variations
3. The type of grassland in these regions strongly depends upon precipitationCorrect
Temperate Grasslands are usually found in the interior of the continents and are characterized by large seasonal temperature variations, with warm summer and cold winter. The type of grassland in these regions strongly depends upon precipitation.
Incorrect
Temperate Grasslands are usually found in the interior of the continents and are characterized by large seasonal temperature variations, with warm summer and cold winter. The type of grassland in these regions strongly depends upon precipitation.
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                        Question 28 of 38
28. Question
28. Which of the following cultivation is favoured by Temperate Grassland Biomes?
Correct
Higher precipitation leads to tall and soft grass and lower precipitation leads to short and soft grass. These regions favour wheat cultivation. Extensive mechanised agriculture is practised due to lack of farm labour. Pastoral industry becomes the main occupation, thereby facilitating slaughtering of animals, packing of raw and processed meat, dairy products etc. The common birds and animals are grass hopper, wolf, bison, prairie dog etc.
Incorrect
Higher precipitation leads to tall and soft grass and lower precipitation leads to short and soft grass. These regions favour wheat cultivation. Extensive mechanised agriculture is practised due to lack of farm labour. Pastoral industry becomes the main occupation, thereby facilitating slaughtering of animals, packing of raw and processed meat, dairy products etc. The common birds and animals are grass hopper, wolf, bison, prairie dog etc.
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                        Question 29 of 38
29. Question
29. Match the following:
I. North America 1. Prairies
II. Argentina 2. Manchurian
III. Australia 3. Pampas
IV. China 4. DownsCorrect
Temperate grasslands are called differently in different parts of the world. Prairies — North America, Steppes – Eurasia, Pampas — Argentina and Uruguay, Veld — South Africa, Downs – Australia, Canterburg – New Zealand, Manchurian – China
Incorrect
Temperate grasslands are called differently in different parts of the world. Prairies — North America, Steppes – Eurasia, Pampas — Argentina and Uruguay, Veld — South Africa, Downs – Australia, Canterburg – New Zealand, Manchurian – China
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                        Question 30 of 38
30. Question
30. Which of the following falls in the Tundra biomes?
1. Iceland
2. Greenland
3. Arctic
4. AntarcticCorrect
These vast lowlands are found where the ground remains frozen. Greenland, Arctic and Antarctic regions and Northern parts of Asia, Canada and Europe fall in this biome. These regions are also called Barren lands. This biome experiences long severe winter and short cool summer.
Incorrect
These vast lowlands are found where the ground remains frozen. Greenland, Arctic and Antarctic regions and Northern parts of Asia, Canada and Europe fall in this biome. These regions are also called Barren lands. This biome experiences long severe winter and short cool summer.
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                        Question 31 of 38
31. Question
31. Which of the following is the occupation of Tundra region?
Correct
Due to the prevailing of low temperature and short growing seasons, the net primary productivity is very low in tundra. People are nomadic. Hunting and fishing are their major occupations. The population here is extremely sparse and the harsh environment makes them change their settlement frequently. They live in igloos in winter and in tents during summer. Arctic moss, Arctic willow, lichens etc. grow here. Fauna like the polar bear, wolverine, reindeer, snowy owl are found here.
Incorrect
Due to the prevailing of low temperature and short growing seasons, the net primary productivity is very low in tundra. People are nomadic. Hunting and fishing are their major occupations. The population here is extremely sparse and the harsh environment makes them change their settlement frequently. They live in igloos in winter and in tents during summer. Arctic moss, Arctic willow, lichens etc. grow here. Fauna like the polar bear, wolverine, reindeer, snowy owl are found here.
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                        Question 32 of 38
32. Question
32. Which of the following statement is correct?
1. Aquatic biome is a group of living organisms that live and interact with one another and its aquatic environment for nutrients and shelter.
2. Like terrestrial biomes, aquatic biomes are influenced by a series of abiotic factorsCorrect
Aquatic biome is a group of living organisms that live and interact with one another and its aquatic environment for nutrients and shelter. Like terrestrial biomes, aquatic biomes are influenced by a series of abiotic factors. It is broadly classified as fresh water biomes and marine biomes.
Incorrect
Aquatic biome is a group of living organisms that live and interact with one another and its aquatic environment for nutrients and shelter. Like terrestrial biomes, aquatic biomes are influenced by a series of abiotic factors. It is broadly classified as fresh water biomes and marine biomes.
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                        Question 33 of 38
33. Question
33. Which of the following plants grow in Fresh water Biomes?
1. Water lily
2. Lotus
3. duck weedsCorrect
Water lily, lotus, duck weeds etc. are the common plants found Fresh water Biomes. Trout, salmon, turtles, crocodiles etc. are the animals found here.
Incorrect
Water lily, lotus, duck weeds etc. are the common plants found Fresh water Biomes. Trout, salmon, turtles, crocodiles etc. are the animals found here.
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                        Question 34 of 38
34. Question
34. Which of the following is not included in fresh water biomes?
Correct
Fresh water Biomes comprises lakes, ponds, rivers, streams, wetlands etc. It is influenced by various abiotic components such as the volume of water, water flow, composition of oxygen, temperature, etc. Humans rely on freshwater biomes for drinking water, crop irrigation, sanitation and industry.
Incorrect
Fresh water Biomes comprises lakes, ponds, rivers, streams, wetlands etc. It is influenced by various abiotic components such as the volume of water, water flow, composition of oxygen, temperature, etc. Humans rely on freshwater biomes for drinking water, crop irrigation, sanitation and industry.
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                        Question 35 of 38
35. Question
35. Which of the following statement is correct?
1. They are the largest aquatic biomes on earth
2. They are continuous bodies of salt water and provide a wide range of habitats for marine plants and animals.
3. Coral reefs are a second kind of marine biomes within the oceanCorrect
Marine Biomes are the largest aquatic biomes on earth. They are continuous bodies of salt water and provide a wide range of habitats for marine plants and animals. Coral reefs are a second kind of marine biomes within the ocean. Estuaries, coastal areas where salt water and fresh water mix, form a third unique marine biome.
Incorrect
Marine Biomes are the largest aquatic biomes on earth. They are continuous bodies of salt water and provide a wide range of habitats for marine plants and animals. Coral reefs are a second kind of marine biomes within the ocean. Estuaries, coastal areas where salt water and fresh water mix, form a third unique marine biome.
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                        Question 36 of 38
36. Question
36. Assertion(A): Aquatic biomes are not only important for plants and animals, but also for humans
Reason(R): Humans use aquatic biomes for water, food and leisure activities.Correct
As water provides maximum mobility to marine organisms, nutrients are circulated more quickly and efficiently here than the terrestrial biomes. Apart from animals, plants such as kelp, algae, phytoplankton etc. also grow in water. Aquatic biomes are not only important for plants and animals, but also for humans. Humans use aquatic biomes for water, food and leisure activities. Some of the threats and issues to aquatic biomes are overfishing, pollution and rise in sea level.
Incorrect
As water provides maximum mobility to marine organisms, nutrients are circulated more quickly and efficiently here than the terrestrial biomes. Apart from animals, plants such as kelp, algae, phytoplankton etc. also grow in water. Aquatic biomes are not only important for plants and animals, but also for humans. Humans use aquatic biomes for water, food and leisure activities. Some of the threats and issues to aquatic biomes are overfishing, pollution and rise in sea level.
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                        Question 37 of 38
37. Question
37. Which of the following statement is correct?
1. The biosphere extends from the deep ocean trenches to lush rain forests.
2. People play an important role in maintaining the flow of energy in the biosphere
3. There are places on earth that are both biologically rich and deeply threatenedCorrect
The biosphere extends from the deep ocean trenches to lush rain forests. People play an important role in maintaining the flow of energy in the biosphere. At the same time, the primary cause of today’s loss of biodiversity is habitat alteration caused by human activities. The ever-increasing population results in over exploitation of biological resources. This has an adverse impact on flora and fauna on earth. There are places on earth that are both biologically rich and deeply threatened. Hence it is man’s duty to conserve and care for the earth and make it a better place to live in.
Incorrect
The biosphere extends from the deep ocean trenches to lush rain forests. People play an important role in maintaining the flow of energy in the biosphere. At the same time, the primary cause of today’s loss of biodiversity is habitat alteration caused by human activities. The ever-increasing population results in over exploitation of biological resources. This has an adverse impact on flora and fauna on earth. There are places on earth that are both biologically rich and deeply threatened. Hence it is man’s duty to conserve and care for the earth and make it a better place to live in.
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                        Question 38 of 38
38. Question
38. How many Biosphere reserves are there in India?
Correct
A Biosphere Reserve is a special ecosystem or specialized environment with flora and fauna that require protection and nurturing. There are 18 Biosphere Reserves in India.
Incorrect
A Biosphere Reserve is a special ecosystem or specialized environment with flora and fauna that require protection and nurturing. There are 18 Biosphere Reserves in India.
 
Leaderboard: Biosphere Online Test 9th Social Science Lesson 23 Questions in English
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