Question

1.What is the Role of algae in lichens?
2.why do farmers grow a leguminous crop in between two main crops?

Answer 1

Answer:

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Explanation:

first answer explanation is as lichen is made of two substance which is algae and fungi in which algae is also known as phycobiont and it is a autotrophic which provides food to fungi and does fungi provides shelter and mineral nutrients to it .

second answer explanation is is leguminous crops are good source of nitrogen fixation they fix the nitrogen into the soil and provide a vast quantity of nutrients to the crop so that's why a farmer grow a leguminous crop in between two main crops .

Answer 2

Answer:

Leguminous plants have nitrogen fixing bacteria at their root nodules. these bacteria take up atmospheric nitrogen and convert them to nitrous compounds which are useful to plants thus increasing the fertility of the soil. this helps in the growth of other plants grown with the leguminous plants.