The plant parts which consist of two generations - one within the other: (a) Pollen grains inside the anther (b) Germinated pollen grain with two male gametes (c) Seed inside the fruit (d) Embryo sac inside the ovule
(1) (a) only
(2) (a), (b) and (c)
(3) (c) and (d)
(4) (a) and (d)
In (a), pollen grains (male gametophyte) are inside the anther (sporophyte). In (d), the embryo sac (female gametophyte) is inside the ovule (sporophyte). Both represent two generations, one within the other.
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