Many Indian crop fields need the services of honeybees as pollinators.-Give reasons.

What are the possible types of pollinates in chasmogamous flowers. Give reasons.

Crop and gizzard are present in digestive system of birds. Give reason.

Self-pollination is the most economic method for the plant. Give reason.

After Pollination,if the 2-celled pollen grain comes across dry stigma, then there will not be germination of pollen grain. Give reason.

" A male honeybee has 16 chromosomes whereas the female bee has 32" Give reason.

Two wires of equal lengths are bent in the form of two loops. One of the loop is square shaped, whereas the other loop is circular. These are suspended in a uniform magnetic field and the same current is passed through them.Which loop will experience greater torque? Give reasons.

A farmer adds/ supplies Na, Ca, Mg and Fe regularly to his field and yet he observes that the plants show deficiency of Ca, Mg and Fe. Give a valid reason and suggest a way to help the farmer improve the growth of plants.

Pollination and seed formation are very crucial for fruit formation. Give reason.

Give reasons for need of Hybridisation.

Write short notes on: Advantages of animal classification OR State the iimportance of animal classification OR Give reason - There is need for classification of animals.