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Reproduction In Organisms

Question
CBSEENBI12003462
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Assertion : Commelina shows cleistogamy.

Reason : This reduces chances of inbreeding.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false

Solution

C.

If assertion is true but reason is false

Commenlia produce two types of flowers- 

(i) Chasmogamous: These flowers are similar to flowers of other species with exposed anthers and stigma.

(ii) Cleistogamous: These flowers do not open at all. In these flowers, anther and stigmalie close to each other. When anther dehisce in the flower buds, pollen grains come in contact with the stigma to effect pollination. Thus, cleistogamous are invariably autogamous as there is no chance of cross- pollen landing on the stigma. 

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(iii) Bulbourethral gland

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