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Question
Pollen tube laden with starch is a characteristics of
Pollen tube laden with starch is a characteristics of
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Solution
The correct option is D Gymnosperms
A pollen tube is a part of the male gametophyte of seed plants. It functions as a duct to transport the male gamete cells from the pollen grain but in some members of gymnosperms, pollen tube is involved only in nutrient uptake from ovule tissue and does not convey sperm cells to the egg. In such, pollen tube is filled with starch. These gymnosperms have flagellate sperm, which swims through a watery fluid to fertilize the egg cells. Thus, the correct answer is 'Gymnosperms.'
A pollen tube is a part of the male gametophyte of seed plants. It functions as a duct to transport the male gamete cells from the pollen grain but in some members of gymnosperms, pollen tube is involved only in nutrient uptake from ovule tissue and does not convey sperm cells to the egg. In such, pollen tube is filled with starch. These gymnosperms have flagellate sperm, which swims through a watery fluid to fertilize the egg cells. Thus, the correct answer is 'Gymnosperms.'
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