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Question
Which of the following algae has a haplontic life cycle?
Which of the following algae has a haplontic life cycle?
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Solution
The correct option is A Volvox
Many algae such as Volvox, Spirogyra and some species of Chlamydomonas have a haplontic life cycle.
So Volvox is haploid (n) algae, the haploid gametes fertilize to make diploid zygote (2n) which divides by meiosis to make haploid cells (n) which mature into haploid Volvox colony.
While most algal genera are haplontic, some of them such as Ectocarpus, Polysiphonia, and Kelps are haplo-diplontic. Fucus is diplontic.
Many algae such as Volvox, Spirogyra and some species of Chlamydomonas have a haplontic life cycle.
So Volvox is haploid (n) algae, the haploid gametes fertilize to make diploid zygote (2n) which divides by meiosis to make haploid cells (n) which mature into haploid Volvox colony.
While most algal genera are haplontic, some of them such as Ectocarpus, Polysiphonia, and Kelps are haplo-diplontic. Fucus is diplontic.
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