explain the t.s of a microsporangium with a labeled diagram
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explain the t.s of a microsporangium with a labeled diagram
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Answer:
A microsporangium is circular in outline in transverse section and is usually surrounded by four wall layers. The outermost is the single layer of the epidermis. The second layer is endothecium, where cells develop thickenings. ... The innermost layer is tapetum, which provides nutrition to the developing pollen cells.