Plant Reproduction

Question 1

What is the difference between self-pollination and cross-pollination?

Answer 1

Self-pollination: Pollen from the same flower.

Cross-pollination: Pollen from a different flower.

Question 2

What are the parts of a flower and their functions?

Answer 2

Stamen (anther + filament): Produces pollen.

Carpel (stigma + style + ovary): Produces ovules and receives pollen.

Question 3

What happens after fertilization in a flower?

Answer 3

Ovule becomes a seed; ovary becomes a fruit.

Question 4

How are seeds dispersed?

Answer 4

Wind, water, animals, and explosive mechanisms.

Question 5

Advantages of Cross Pollination?

Answer 5

Increases genetic variation.
Leads to stronger offspring with better disease resistance.
Promotes adaptability to environmental changes.

Question 6

Advantages of self pollination?

Answer 6

Ensures pollination even when pollinators are scarce.
Preserves desirable traits.
Faster and more reliable reproduction.

Question 7

Cons of Cross pollination?

Answer 7

Relies on pollinators (wind, insects), which may fail.
Wastes more pollen.
Risk of introducing undesirable traits.

Question 8

Cons of self pollination?

Answer 8

Reduces genetic variation.
Increases the risk of harmful recessive traits.
Weaker adaptability to environmental changes.