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Criteria for Autogamy to Take Place

The one advan...

Question

The one advantage of cleistogamy is

A

It leads to greater genetic diversity

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B

Seed dispersal is more efficient and wide spread

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C

Seed set is not dependent on pollinators

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D

Each visit of a pollinator results in transfer of hundreds of pollen grains

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Solution

The correct option is C Seed set is not dependent on pollinators
Cleistogamy means self-pollination. It is seen in plants like peanuts, beans, and beans. The advantage of cleistogamy is no pollinator is required as it can propagate by using non-opening, self-pollinating flowers.
Thus, the correct answer is option C.

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Q. The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which during pollination, bring genetically different types of pollen grains to stigma is:

Q. Assertion :Although geitonogamy is functionally cross-pollination involving a pollinating agent, genetically it is similar to autogamy. Reason: In geitonogamy, pollen grains from the anthers of one flower are transferred to the stigma of another flower borne on the same plant.

Q. Classify the given statements under the headings 'self pollination ' and 'cross pollination'.
a. Transfer of pollen grains from the anther to the stigma of the same flower.
b. Transfer of pollen grains from the anther to the stigma of a different flower.
c. No need of pollinators to transfer pollen grains.
d. Produces large amounts of pollen grains.
e. Requires pollinators to transfer pollen grains.

Q. (a) Explain post pollination events leading to seed production in angiosperms
(b) List the different types of pollination depending on the source of pollen grain [5]

1

: In pea plant, transfer of pollen grains to the stigma is easy.
Statement

2

: In cross pollinating plants, pollination does not take place.

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Criteria for Autogamy to Take Place

Standard IX Biology

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