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133.in flowering plants, free nuclear divisions are involved in
development of
(a) Male gametophyte
✓(b) Female gametophyte (Embryo soc
(c) Endosperm
(d) Embryo
(1) All (a). (b), (c) and (d)
(2) (a), (b) and (c) only
(3) (b), (c) and (d) only
(4) (b) and (c) only