Question

Attractants and rewards are required for-

• A. hydrophily
• B. entomophily
• C. anemophily
• D. cleistogamy

Answer 1

The correct option is B

entomophily

The correct option is B.

Explanation of correct option:

1. Attractants and rewards play vital roles in the pollination process.
2. Attractant refers to flower colour and fragrance that attract insects such as bees, wasps, butterflies, etc.
3. Plants provide rewards like nectar and pollen grains to facilitate insect pollination.
4. Entomophily is a type of insect pollination that is observed in entomophilous flowers. These flowers are colourful, fragrant, and full of nectar, thereby attracting insects. e.g. Rose, Jasmine etc.

Explanation of incorrect option:

Option A:

1. In hydrophily, attractants and rewards are not required.
2. In this type of pollination, the pollen grains are carried out by water. It is observed in aquatic plants (e.g., Vallisneria).

Option C:

1. Anemophily is a pollination process in which the pollen grains are transferred by air; hence it doesn’t require insect pollinators.
2. It occurs in many plants such as cereal crops, oak, poplar, etc.

Option D:

1. Cleistogamy is a type of self-pollination which is observed in cleistogamous flowers.
2. Cleistogamous flowers always remain closed. In this type of flower, stigma and anthers are close to each other and cross-pollination is no way possible. e.g. Viola, Oxalis, etc.

Final answer:

Attractants and rewards are required for entomophily.