Write about haplontic and diplontic life cycle with diagram.

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Solution

Haplontic cycle Diplontic Cycle
1) The zygote undergoes meiosis and gametophyte is a dominant phase. 1) Gametes undergo meiosis and diploid sporophyte is the dominant and independent phase.
2) The sporophytic phase is represented by single-celled zygote called as zygospores. 2) Gametes are haploid and called a gametophyte.
3) Haploid spores are formed by meiosis in a zygote. 3)The sporophyte is conspicuous.
4) Each spore on favourable condition forms a gametophyte. 4) In angiosperms stamens and ovaries contain sporophytes
5) It is observed in algae like volvox, spirogyra etc. 5) Present in angiosperms and gymnosperms

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(b) diplontic life cycle

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Haplontic cycle	Diplontic Cycle
1) The zygote undergoes meiosis and gametophyte is a dominant phase.	1) Gametes undergo meiosis and diploid sporophyte is the dominant and independent phase.
2) The sporophytic phase is represented by single-celled zygote called as zygospores.	2) Gametes are haploid and called a gametophyte.
3) Haploid spores are formed by meiosis in a zygote.	3)The sporophyte is conspicuous.
4) Each spore on favourable condition forms a gametophyte.	4) In angiosperms stamens and ovaries contain sporophytes
5) It is observed in algae like volvox, spirogyra etc.	5) Present in angiosperms and gymnosperms