Read the following statements and mark the right option A. Pollen s...

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Read the following statements and mark the right option
A. Pollen sacs extend all through the length of an anther and are packed with pollen mother cell
B. A typical microsporangium is near circular in outline
C. The inner three layer of microsporangium perform function of dehiscence and protection
(1) Only B is correct
(2) Only B and C are correct
(3) Only A and C are correct
(4) All A, B and C are correct
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