Plant Reproduction | MCQs

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Papaya plants are mostly dioecious, meaning male and female flowers are on separate plants, requiring cross-pollination.

Wind and insects help transfer pollen from male to female flowers for fruit production.

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Cross-Pollination Benefit:

• Transfer of pollen between different plants introduces new genetic combinations, enhancing biodiversity and resilience.
• Results in healthier offspring (disease resistance, adaptation to environments).

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Asexual reproduction in plants is commonly referred to as vegetative propagation or vegetative reproduction.

It involves the formation of new plants from parts of the parent plant, like stems, roots, or leaves, without the involvement of seeds.

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Self-pollination occurs when pollen from the same flower fertilizes the ovule, common in bisexual flowers like rose.

Maize, papaya, and cotton mainly undergo cross-pollination due to separate male and female parts or flower arrangements.

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Papaya is a dioecious plant, meaning male and female flowers are on separate plants, so it relies on cross-pollination.

In contrast, pea and tomato plants usually undergo self-pollination.

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Double fertilization occurs in angiosperms like Brassica, where one sperm fertilizes the egg, and another fuses with the central cell to form endosperm.

Bryophytes and gymnosperms (e.g., pine).

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Ornithophily is the term used for pollination by birds.

This type of pollination typically involves brightly colored flowers with a lot of nectar to attract bird species.