- Home
- Standard 12
- Biology
Assertion : Chasmogamous flowers require pollinating agents.
Reason : Cleistogamous flowers do not expose their sex organs
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
If the Assertion is correct but Reason is incorrect.
If both the Assertion and Reason are incorrect.
Solution
The majority of angiosperms bear chasmogamous flowers, which means the flowers expose their mature anthers and stigma to the pollinating agents. There is another group of plants which set seeds without exposing their sex organs. Such flowers are called cleistogamous and the phenomenon is cleistogamy.
Similar Questions
Match the columns
| Column $I $ | Column $II$ |
| $(a)$ Animophili | $(1)$ By water |
| $(b)$ Hydrophili | $(2)$ By wind |
| $(c)$ Zoophili | $(3)$ By insects |
| $(d)$ Antemophili | $(4)$By animals |
Match the following
| Column $- I$ | Column $- II$ |
| $(1)$ Grasses | $(P)$ Prevent autogamy and geitonogamy |
| $(2)$ Hydrilla | $(Q)$ Wind pollination |
| $(3)$ Cleistogamous flower | $(R)$ Water pollination |
| $(4)$ Papaya | $(S)$ Auto gamy |
