Question

D. State True or False.
1. Bacteria possess characteristics of living as well as non-living
2. Microorganisms may be unicellular or multicellular.
3. Algae can make their own food because they contain chlorophyll
4. Anabaena and Nostoc are nitrogen-fixing cyanobacteria.
5. Nitrosomonas oxidises ammonia to nitrates.​

Answer 1

Answer:

1) True

2) False

3) False

4) True

5) False

Answer 2

Answer:

1. True

2. True

3. True

4. True

5. False

Explanation:

1. It is true because they can because they include cyanobacteria that carry out photosynthesis.

2. It is true because we know microorganisms can be both unicellular and multicellular or acellular.

3. It is true because algae can produce their own chlorophyll as they are chlorophyll bearing thalloid and simple autotropic organisms.

4. It is true because cyanobacteria also known as the blue green algae are kind of free living bacteria that can fix nitrogen with the help of specialized cells called heterocyst.

5. It is false because nitrification takes place where ammonia is then reduced in the form of nitrogen with the help of autotropic nitrifying bacteria to nitrate.

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