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A dioecious flowering plant prevents bot...

A dioecious flowering plant prevents both

A

Autogamy and xenogamy

B

Autogamy and geitonogamy

C

Geitonogamy and xenogamy

D

Cleistogamy and xenogamy

Text Solution

Verified by Experts

The correct Answer is:
B
When unisexual male and female flowers are present on different plants the condition is called dioecious and it prevents both autogamy and geitonogamy.
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(a) Describe any two devices in a flowering plant which prevent both autogamy and geitonogamy. (b) Explain the events upto double fertilization after the pollen tube enters one of the synergids in an ovule of an angiosperm .

State True of False (i) Light nd non sticky pollen grains are characteristic of wind pollinated floweres (ii) Dioecious conditin in plants prevents xenogamy

(a) Mention any four strategies adopted by flowering plants to prevent self- pollination. (b) Why is geitonogamy also referred to as genetical autogamy?

A dioecious plant is

Non flowering plants are called

A dioecious plant has

Non-flowering plants belongs to :