Question

Antifeedant property is found in:
A. Margosa
B. Parthenium
C. Chrysanthemum
D. Sesbania

Answer 1

Hint: The property that is found in plants due to the presence of antifeedants,which is an organic compound, is known as antifeedant property. This helps the plants to prevent attack of insects and grazing organisms.

Complete answer:
Let’s analyze all the options and find out which plant has the antifeedant property. Antifeedant property is caused by an organic compound called Azadirachtin. So this property will only be present in plants which have this compound.

Option A) Margosa is another name for neem plants. The scientific name of neem plant is Azadirachta indica. So it is clear from the scientific name itself that the compound azadirachtin is present in neem plants.
Antiffedant produced by Margosa helps in inhibiting attacks of grazing animals.
Option B) Parthenium does not consist of the organic compound azadirachtin. So it does not show antifeedant property.
Option C) Chrysanthemum does not consist of the organic compound azadirachtin. So it does not show antifeedant property.
Option D) Sesbania does not consist of the organic compound azadirachtin. So it does not show antifeedant property.

Hence, the correct answer is option (A)

Note: Margose is also known as nimtree or Indian lilac. This plant has the highest biological activity and it is capable of producing developmental abnormalities in insects. The Margosa oil is also used as an insecticide as the plant has antifeedant property itself. The attack of the insects are mainly prevented due to the distinctive smell of the compound.