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प्रश्न
After pollination a pollen grain has three haploid nuclei : one ______ nucleus and two ______ nuclei.
रिकाम्या जागा भरा
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उत्तर
After pollination a pollen grain has three haploid nuclei : one tube nucleus and two sperm nuclei.
Explanation:
The tube nucleus controls the growth of the pollen tube, while the two sperm nuclei participate in fertilization – one fuses with the egg to form the zygote and the other fuses with the polar nuclei to form the endosperm.
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