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State whether the following statements a...

State whether the following statements are true of false regarding androecium .
I. The anther of all angiosperms has four theca.
II. The outermost layer of the microsporangium is the tepetum.
III. The distal end of the filament is attached to the stamen.
IV. Pollen grains of the same species differ from each other in their morphologies.

A

1 - True , 2 - True , 3 - True , 4 - False

B

1 - False , 2 - False , 3 - False , 4 - True

C

1 - False , 2 - False , 3 - True , 4 - False

D

1 - True , 2 - False , 3 - False , 4 - True

Text Solution

AI Generated Solution

The correct Answer is:
To determine whether the statements regarding the androecium are true or false, let's analyze each statement one by one: ### Statement I: The anther of all angiosperms has four theca. - **Analysis**: This statement is **false**. Most angiosperms have anthers that are **dithecous**, meaning they typically have **two thecae** (pollen sacs), not four. While some species may have anthers with more than two thecae, it is not accurate to say that all angiosperms have four thecae. ### Statement II: The outermost layer of the microsporangium is the tepetum. - **Analysis**: This statement is also **false**. The tepetum is actually the **innermost layer** of the microsporangium. The outermost layer is called the **epidermis** or **outer wall** of the microsporangium. ### Statement III: The distal end of the filament is attached to the stamen. - **Analysis**: This statement is **true**. The filament is the stalk of the stamen, and its distal end is indeed attached to the stamen, which supports the anther. ### Statement IV: Pollen grains of the same species differ from each other in their morphologies. - **Analysis**: This statement is **false**. Pollen grains of the same species generally have a consistent morphology. It is the pollen grains of **different species** that exhibit differences in morphology. ### Summary of Statements: - Statement I: False - Statement II: False - Statement III: True - Statement IV: False ### Final Conclusion: The correct option is that statements 1, 2, and 4 are false, while statement 3 is true.
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