Home
Class 12
BIOLOGY
Flowering plants have developed certain ...

Flowering plants have developed certain outbredding devices to discourage self-pollination and encourage cross-pollination. One of these is not an examples of such outbreeding device.

A

Dicliny

B

Dichogamy

C

Herkogamy

D

Cleistogamy

Text Solution

Verified by Experts

The correct Answer is:
D
Clesitogamous flowers are intersexual. They remain closed causing self pollination. Cleistogamy occurs late in the flowering season in some plants, e.g., Commelina, balsam, Oxalis, Viola. These plants possess both chamogamous and cleistogamous flowers. in cleistogamous flowers, the anthers dehisce inside closed flowers. Growth of style brings the pollen grains in contact with stigma. cleistogamy ensures self-pollination.
Promotional Banner

Similar Questions

Explore conceptually related problems

Discuss the important outbreeding devices for cross pollination?

Which one of the following is not a device to promote cross-pollination ?

Make a list of any three outbreeding devices that flowering plants have developed and explain how they help to encourage cross pollination.

Plants with ovaries having only one or a few ovules , are generally pollinated by

Express in one word only Bisexual flowers where floral parts are barriers for self pollination.

Express in one word only Pollination between flowers borne by different plants of same species.

Express in one word only Pollination between pollen and stigma and stigma borne by the flower of the same plant.

When a pure strain of tall plants (TT) with round seeds (RR) is crossed with a pure strain of short plants (tt) with wrinkled seeds (rr), an F_(1) generation is produced. The alleles for short and wrinkled are recessive to those for tall and round, respectively. When these F_(1) plants self-pollinate, what proportion of the F_(2) generation is short with wrinkled seeds ?

Geitonogamous flowering plants are genetically autogamous but functionally cross pollinated. Justify.