FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which best states the role of the pollen tube?
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produces pollen grains in the stamen
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transports sperm to the embryo sac
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protects pollen during air travel
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all of the above
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Explanation:
Detailed explanation-1: -The synergids have filiform apparatus that guides the pollen tube towards the egg. Thus the pollen tube enters embryo sac through one of the synergids.
Detailed explanation-2: -The pollen tube acts as a conduit to transport the male gamete cells from the pollen grain-either from the stigma (in flowering plants) to the ovules at the base of the pistil or directly through ovule tissue in some gymnosperms.
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