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Question

Haplontic life cycle is exhibited by

A
Fucus
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B
Ectocarpus
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C
Polysiphonia
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D
Volvox
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Solution

The correct option is D Volvox
In Volvox, the haploid gametophytic stage is dominant and multicellular. Hence, they exhibit a haplontic life cycle.

Fucus shows diplontic life cycle, where the diploid phase is predominant than the haploid phase in the life cycle.

Ectocarpus and Polysiphonia show haplo-diplontic life cycle where both the haploid and the diploid phases are equally prevalent in their life cyles.

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