Nutrition of Bacteria

Q. Anoxygenic phototrophic bacteria do not utilize:

1. $Water$
2. $C{O}_2$
3. $H_{2}S$
4. $Thiosulphate$

Q.

How do bacteria obtain their nourishment ?

Q.

The interior of a cow-dung pile kept for a few days is quite warm. This is mostly because

1. cellulose present in cow dung is a good insulator

2. dung is dark and absorbs a lot of heat

3. undigested material released heat due to oxidation by air

4. bacterial metabolism inside the dung releases heat

Q. The Sun is the sole source of energy for all life on Earth.

1. True
2. False

Q. Plant decomposers are:

1. Fungi and plants
2. Protista and Animalia
3. Animalia and Mogna
4. Monera and fungi

Q.

Which of the following is a mode of nutrition in Cyanobacteria?

1. Chemoautotrophic

2. Photoheterotrophic

3. Chemoheterotrophic

4. Photoautotrophic

Q. What do you call bacteria that use organic molecules both for energy and carbon source?

1. Photoheterotrophs
2. Chemoautotrophs
3. Chemoheterotrophs
4. Photoautotrophs

Q. Maximum nutritional diversity is found in the group:

1. Monera
2. Plantae
3. Animalia
4. Fungi

Q. Match the following:

A. Chemosynthetic bacteria	1. Consume sulphur
B. Photoautotrophic bacteria	2. Environmental balance
C. Saprophytic bacteria	3. Produce sulphur
D. Symbiotic bacteria	4. Synthesize vitamins in human gut

1. A-1, B-3, C-2, D-4
2. A-1, B-3, C-4, D-2
3. A-3, B-1, C-2, D-4
4. A-4, B-3, C-2, D-1

Q. The main difference between photosynthetic and chemosynthetic bacteria is that:

1. Water is used by photosynthetic bacteria whereas it is rejected by chemosynthetic bacteria
2. Photosynthetic bacteria are seen as parasites within green plant cells whereas chemosynthetic bacteria are seen as saprophytes on other decaying food substances
3. Photosynthetic bacteria are seen in green plants whereas chemosynthetic bacteria are seen in chemical substance
4. Energy from sunlight is used in photosynthetic bacteria while in chemosynthetic bacteria energy is used by the oxidation of inorganic substances