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In gymnosperms, gametophytes are
Option: 1
Diploid, dominant and dependent

Option: 2
Haploid, Reduced and dependent

Option: 3
Haploid, dominant and dependent

Option: 4
None of these

Answers (1)

best_answer

Reproduction in gymnosperms -

Megasporophylls possess integumented megasporangium known as ovules which bear female gametophyte.
Female gametophyte possess archegonia i.e. female sex organ.
Microspores include male gametophyte which produces only two male gametes or sperm.
The pollen grains or microspores are liberated at more than 2-celled stage from microsporangium.
Water is not required for transport of male gamete. A pollen tube is formed that delivers male gametes to archegonia.
Fertilization produces a zygote which later turns into an embryo.
Endosperm in gymnosperms is formed before fertilization. It represents the haploid female gametophyte generation.
The seeds are naked i.e. they are not formed inside fruit as in angiosperms.

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In gymnosperms, gametophytes are reduced. They are haploid, Reduced and dependent.

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