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In Pinus/gymnosperms, the haploid structure are
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- megaspore, endosperm and embryo
- megaspore, pollen grain and endosperm
- megaspore, integument and root
- pollen grain, leaf and root
Correct Option: B
Pinus and in all other gymnosperms endosperm is produced before fertilization and is haplolid. Megaspore and pollen grain are initial structures of female gametophyte and male gametophyte respectively hence, they are haploid.
