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Micro-Organisms

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Micro Organisms - 8th Std Science

Congratulations - you have completed Micro Organisms - 8th Std Science. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%
Your answers are highlighted below.
Question 1
Micro organisms can be seen through _________
A
Microscope
B
naked eye
Question 2
Micro organisms are measured in _______
A
Microns & Millimicrons
B
Millimetre
Question 3
Virus is a Latin word which means_______
A
Poison
B
Protozoa
Question 4
The study of viruses is called ________
A
Virology
B
Phycology
Question 5
The micro organisms show both living and non-living characteristics ______
A
Virus
B
bacteria
Question 6
Virus was discovered by _______
A
Ivanowsky
B
Antonvon
Question 7
Virus attack & bacteria or bacteria eater is ________
A
Bacteriophage
B
Phycophage
Question 8
Virus attacks or infects the plant is ________
A
Phytophage
B
Phycophage
Question 9
Virus infects the algae is _________
A
Phytophage
B
Phycophage
Question 10
Virus infects animal is ________
A
Zooghage
B
Mycophage
Question 11
Virus infects fungi is ______
A
Mycophage
B
Phycoophage
Question 12
The study of bacteria is called _______
A
Bacteriology
B
Mycology
Question 13
Bacteria were first observed by _____
A
Antonvon Leeuwen hoek
B
Ivanowsky
Question 14
The bacterial cell is a ________
A
Prokaryotic cell
B
Eukaryotic Cell
Question 15
Bacteria Contains ________ Pigments.
A
bacteriochlorophyll
B
chlorophyll
Question 16
_________ are the organs of motility.
A
Flagella
B
Pili
Question 17
Flagella are thread like _______
A
Appendages
B
Pigments
Question 18
_________ are considered to be  organs of attachment.
A
Pili
B
food granules
Question 19
Bacteria  are measured in _______
A
Microns
B
Millimicrons
Question 20
________ bacteria are spherical shaped.
A
Cocci
B
bacilli
Question 21
_______ bacteria are rod shaped.
A
bacilli
B
cocci
Question 22
_________ bacteria are cork screw shaped.
A
Spirillum
B
Vibro
Question 23
________ bacteria comma shaped.
A
Vibro
B
Cocci
Question 24
A single flagellum is at one end of the bacteria ________
A
Monotrichous
B
Polutrichous
Question 25
A tuft of flagella arising at both end of the bacteria is __________
A
Amphitrichous
B
Atrichour
Question 26
Tuft of flagella is at one end of the bacteria _______
A
Lophotrichous
B
Peritrichous
Question 27
Flagella all around the bacterial cell is _______
A
Peritrichous
B
Atrichous
Question 28
A bacterial cell without any flagella is ________
A
Atrichous
B
Amphitrichous
Question 29
_________ is a unicellular green algae.
A
Chlamydomonas
B
Yeast
Question 30
Chlamydomonas has ________ shaped chloroplast.
A
Cup
B
ring
Question 31
An _______ is located at the anterior end of chlamydomonas
A
eye-spot
B
chloroplast
Question 32
There are _______ flagellae at the narrow end of the chlamydomonar cell.
A
Two
B
Three
Question 33
The organ of locomotion in chlamydomonas is _______
A
flagellae
B
pyrenoid
Question 34
The chloroplast of chlamydomonas has _______ which contains starch
A
Pyrenoid
B
eye-spot
Question 35
The study of algae is called _____
A
phycology
B
mycology
Question 36
______ is a unicellular fungi.
A
yeast
B
bacteria
Question 37
Yeast is _______ fungs.
A
Saprophytic
B
Parasitic
Question 38
The yeast cell is ________ shaped.
A
Oval
B
Conical
Question 39
Fungi do not possess________
A
Chlorophyll
B
mitochondria
Question 40
The study of fungi is called mycology_____
A
mycology
B
phycology
Question 41
Fungi are incapable of _________
A
Photosynthesis
B
Fermentation
Question 42
Photozoans are ________ organisms.
A
Unicellular
B
multicellular
Question 43
Parasitic forms cause ________
A
diseases
B
Photosynthesis
Question 44
Photozoans show mainly ___________ modes of life.
A
Two
B
One
Question 45
The wonder drug ‘Penicillin’ was discovered by _______
A
Alexander Fleming
B
Robert Koch
Question 46
An example of ammonifying bacteria is ________
A
Bacillus ramosus
B
Rhizobium
Question 47
An example of nitrifying bacteria is _______
A
Nitrobacter
B
Azatobacter
Question 48
An example of root nodules bacteria ________
A
Rhizobium
B
Bacillus Samosus
Question 49
_______ is an example of single cell protein.
A
Chlorella
B
Agaricus
Question 50
Algal bloom leads to loss of species diversity which is known as ______
A
Eutrophication
B
Nitrogen fixation
Question 51
Match the following
  1. Streptococus lactis a. Vinegar
  2. Acetobacter aceti b. Oxalic acid
  3. Aspergillus niger c. Lactic acid
A
2 3 1
B
3 1 2
C
1 3 2
D
3 2 1
Question 52
Match the following
  1. Xanthomonas citri            a. Bunchy top of Banana
  2. Xanthomonas oryzae           b. Blast disease of rice
  3. cercospora personata             c. Citrus canker
  4. Pyricularia oryzae               d. Tikka disease of ground nut.
  5. Bunchy top virus                 e. Bacterial blight in rice
A
3 2 1 4 5
B
5 4 1 3 2
C
1 4 5 2 3
D
3 2 1 5 4
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There are 52 questions to complete.

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