Plant KingdomMedium
Question
In Pinus / gymnosperms, the haploid structure are
Options
A.megaspore, endosperm and embryo
B.megaspore, pollen grain and endosperm
C.megaspore, integument and root
D.pollen grain, leaf and root
Solution
In gymnosperms, the megaspore (haploid) is first cell of female gametophyte and undergoes repeated division to form a multicellular female gametophyte, which because of abundant food reserves, serves as endosperm. So, being produced before fertilization, endosperm is haploid in gymnosperms.
Microspores or pollen grains are first cell of the male gametophyte and are haploid in nature.
Microspores or pollen grains are first cell of the male gametophyte and are haploid in nature.
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