Question

Explain life cycle of cycadophyta.
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Answer 1

Answer:

Cycads, like all seed-producing plants, have a dominant diploid sporophyte phase in their life cycle—this is the large, familiar, green plant seen in nature. Cycads and other gymnosperms do not have true flowers and their seeds are borne naked. In the more evolutionarily recent angiosperms (flowering plants), the seed is enveloped by a coat or fruit which originates from the ovary.

Answer 2

Answer:

When the pollen grain lands in the gynostrobilus it grows a pollen tube that extends within the multicellular, female gametophyte. 4. The sperm cell of the pollen grain swims through the pollen tube using its flagella and fertilizes the egg. 5. This form a zygote.