Analogy:
Fix nitrogen in the soil:Pseudomonas ::Produce bio-fuel:____

Analogy: Food producer: Chloroplasts :: Power house____

Give a note on bio-fuels.

Plants obtain their nitrogen from the soil in the form of

Assertion: One of the main objectives of the green manuring is to increase the content of nitrogen in the soil. Reason: Green in-situ manuring refers to the growing of green manuring crops in the border rows.

Identify the correct statements from the below. (I) Animals that excrete most of its nitrogen in the form of ammonia are called ammonoteles, (II) Many animals are ammonotelic (III) Mammals and terrestrial amphibians mainly excrete ammonia are called ureoteles. (IV) Earthworms, while in soil are ureoteles and when in water are ammonoteles.

Analogy: Edaphic factor :Water in soil::Physical factor:_____