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Q.

Which of the following is true for the transverse section of a typical microsporangium of angiosperms?

a. It is generally surrounded by four wall layers - epidermis, endothecium, middle layers and tapetum

b. The outer three wall layers perform the function of protection and help in dehiscence of anther to release the pollen

c. Tapetum is the outermost layer

 

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a

a and b

b

b and c

c

a and c

d

a, b and c

answer is A.

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Detailed Solution

In a transverse section, a typical microsporangium appears near circular in outline. It is generally surrounded by four wall layers - the epidermis, endothecium, middle layers and the tapetum. The outer three wall layers perform the function of protection and help in dehiscence of anther to release the pollen. The innermost wall layer is the tapetum.

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Which of the following is true for the transverse section of a typical microsporangium of angiosperms?a. It is generally surrounded by four wall layers - epidermis, endothecium, middle layers and tapetumb. The outer three wall layers perform the function of protection and help in dehiscence of anther to release the pollenc. Tapetum is the outermost layer