Nutrition of Bacteria

Q.

How chemosynthetic autotrophic bacteria recycle nutrients like nitrogen, phosphorus, sulphur?

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. Bacterial metabolism inside the dung releases heat

3. Undigested material released heat due to oxidation by air

4. Dung is dark and absorbs a lot of heat

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

Q.

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

1. Photoautotrophic

2. Chemoautotrophic

3. Photoheterotrophic

4. Chemoheterotrophic

Q. Maximum nutritional diversity is found in the group:

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