EasyBotanyAnther
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Identify 1 to 4 in the following diagram :
A
1-Pollen grain, 2-Pollen sac, 3-Filament, 4-Line of dehiscence
B
1-Filament, 2-Pollen sac, 3-Line of dehiscence, 4-Pollen grain
C
1-Filament, 2-Line of dehiscence, 3-Pollen sac, 4-Pollen grain
D
1-Pollen sac, 2-Pollen grain, 3-Line of dehiscence, 4-Filament
Explanation
Class 12th NCERT Page No.5 The diagram represents a longitudinal section of an anther. The labeled parts are identified as follows: 1 Pollen sac (microsporangium), which contains numerous pollen grains (2) formed after meiosis of microspore mother cells. The line of dehiscence (3) is a specialized region of the anther wall through which the anther splits open at maturity to release pollen grains. The filament (4) is the stalk of the stamen that supports the anther and positions it appropriately for pollination.
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