Match the bacteria in Column I with its shape in Column II and select the correct option from the codes given below:
COLUMN I |
|
COLUMN II |
|
A |
Bacillus |
a |
Rod |
B |
Coccus |
b |
Spherical |
C |
Spirilla |
c |
Spiral |
D |
Vibrio |
d |
Comma |
Codes
A | B | C | D | |
1. | a | b | c | d |
2. | b | a | c | d |
3. | a | d | c | b |
4. | b | a | d | c |
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The vast majority of bacteria are:
1. | Heterotrophs | 2. | Photoautotrophs |
3. | Chemosynthetic autotrophs | 4. | Methanotrophs |
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Halophiles are archaebacteria adapted to extreme:
1. | Hot habitats | 2. | Saline habitats |
3. | Marshy habitats | 4. | Cold habitats |
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1. | They are important decomposers. |
2. | They are helpful in making curd from milk, production of antibiotics and fixing nitrogen in legume roots. |
3. | Some are pathogens causing damage to human beings, crops, farm animals and pets. |
4. | Almost all help in recycling nutrients like nitrogen, phosphorus, iron and sulphur. |