Question

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Answer 1

Answer:

vegetative nucleus is responsible for pollen tube development.

Explanation:

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Answer 2

Answer:

The pollen tube development is caused by

Vegetative Nucleus.

Explanation:

Vegetative Nucleus: The large nucleus formed within the pollen grain of angiosperms along with one or two smaller generative nuclei. After germination of the pollen grain it migrates to the tip of the pollen tube where it may be termed the tube nucleus.