The plant parts which consist of two generations one within the other

$(a)$ Pollen grains inside the anther

$(b)$ Gemninated pollen grain with two male gametes

$(c)$ Seed inside the fruit

$(d)$ Embryo sac inside the ovule

  • [NEET 2020]
  • A

    $(a)$ and $(d)$

  • B

    $(a)$ only

  • C

    $(a), (b)$ and $(c)$

  • D

    $(c)$ and $(d)$

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Definations / Explanation : 

$1.$ Dioecious

$2.$ Non albuminous

Differentiate between microsporogenesis and megasporogenesis. Which type of cell division occurs during these events? Name the structures formed at the end of these two events.

Location and Function : Primary endosperm $(3n)$.

Give differences : Microsporogenesis and Megasporogenesis

Match the following:

Column $- I$ Column $- II$
$(1)$ Germ pore $(a)$ Lack of sporopollenin
$(2)$ Parthenium $(b)$ Malva
$(3)$ Self incompatibility $(c)$ Palms
  $(d)$ Contaminant with important wheat