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B
Branched and lacks starch
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C
Branched and rich in starch
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D
Unbranched and lacks starch
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Solution
The correct option is D Branched and rich in starch Pollen tube of Gymnosperms is commonly branched and rich in starch. A pollen tube is part of the male gametophyte of seed plants. It acts as a conduit to transport the male gamete cells from the pollen grain, either from the stigma to the ovules at the base of the pistil, or directly through ovule tissue in some Gymnosperms.