Represent schematically the life cycle of a gymnosperm.
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Gymnosperm life cycle (heterosporous, with alternation of generations):
Sporophyte (2n) → Male/Female Cones
↓
Male cone: Microsporophylls → Microsporangia → Microspore mother cells
→ Meiosis → Microspores → Pollen grains (male gametophyte)
Female cone: Megasporophylls → Megasporangia (ovules) → Megaspore mother cells
→ Meiosis → Megaspores → Female gametophyte → Archegonia → Egg
Pollination → Pollen tube → Male gametes → Fertilization → Zygote (2n)
→ Embryo → Seed (2n) → New Sporophyte
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