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Neem tree has acquired industrial importance, as a source of
a) Biofertilizer, biopesticide and anti-fertility compound
b) Anti- fertility compound, biofertilizer and anti- cancer drug
c) Biopesticide and anti-fertility compound
d) Anti- cancer drug, biopesticide and biofertilizer

Answer
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Hint:The scientific name of neem is Azadirachta indica and is one of the indian traditional plants which has multiple uses over various fields.

Complete answer
Let us explain each of the given terms to get a better understanding and to find the correct answer.
>Biofertilizer- It contains living microorganisms which when sprayed on the plants help in growth of the plant by supplying the necessary nutrients to it.
>Biopesticide- It is derived from animals, plants, bacteria, etc and helps killing and preventing pests of interest.
>Anti-fertility compound- A compound that reduces or destroys fertility of a person.
>Anti- cancer drug - It acts against cancer cells and destroys or kills them.
Option a: The compounds present in neems can be used as biopesticide. They have the ability to kill or prevent pests. Neem can also be used as a biofertilizer. Over the years, neem oil has been proved to have an antifertility effect. It has been used to treat leprosy. The neem bark, leaves, oil and seeds have antifertility properties but the neem flower does not. As all options are true, therefore, this is the correct option.
Therefore, the correct answer is option (a) Biofertilizer, biopesticide and anti-fertility compound.

Note:The other uses of neem are-
It can be used to treat eye disorders, gum disease, skin ulcers, etc
It can also be used to cause an abortion
It helps in preventing diseases of heart and blood vessels