Question

What is a pollen tube? What is its function?
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Answer 1

Answer:

In angiosperms, the pollen tube is siphonogamous and its main function is to carry the male gametes for double fertilization. In some taxa, as in Cucurbitaceae, the tube branches after entering the ovule, prior to fertilization. The tube may even swell and form a bulla.

Answer 2

Answer:

A pollen tube is a tubular structure produced by the male gametophyte of seed plants when it germinates. They are used as a model for understanding plant cell behavior. Research is ongoing to comprehend how the pollen tube responds to extracellular guidance signals to achieve fertilization.