Question

evolution of seed habit

Answer 1

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The origin and evolution of the seed habit was started in late Devonian times about 385 M. a) The earliest seed plants, “progymnosperms”, emerged in the late Devonian . Heterospory, has been evolved independently in several lineages. It is believed to be a precursor to seed reproduction.

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Answer 2

The understanding of the origin and evolution of the seed habit started in late Devonian times.

In pteridophytes mainly the seed habit has started to originate where after fertilization the zygote is retained inside the mother plant.

Seed habit is an evolutionary trend in vascular plants where naked megasporangium got covered by a vascular integument and hence a seed was formed. A seed may be defined as an integumented (surrounded by integument) and indehiscent (not ruptured or fallen off the mother plant) megasporangium.