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Development of Zygote

The first cel...

Question

The first cells of sporophytic and gametophytic generation in plants are

A

zygote and spore respectively

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B

spore and zygote respectively

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C

zygote and spore mother cell respectively

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D

sperm and egg respectively

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Solution

The correct option is A
zygote and spore respectively

The zygote is the first cell of the sporophytic generation while spore is the first cell of the gametophytic generation.

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Q. A plant body first undergoes asexual reproduction by forming spore and then the spore develop into gametophytes which produce gametes. Later these gametes fuse to form zygote. The zygote once again develops into a sporophyte. In which subdivision can we find this type of alternation of generation?

Q. Most plants exhibit alternation of generation during their life cycle. Which reproductive cells form the sporophytic and gametophytic plant body respectively?

Q. Rearrange the following events starting from the formation of the zygote in Marchantia :
I. Formation of sporophyte
II. Spore germination
III. Formation of gametophyte
IV. Gamete formation
V. Reductional division
VI. Formation of spores
VII. Syngamy

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