HORTICULTURE

HORTICULTURE SCIENCE

PLANT BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
While most of the algal species are haplontic, which among the following is haplo-diplontic?
A
Fucus
B
Chara
C
Polysiphonia
D
Spirogyra
Explanation: 

Detailed explanation-1: -While most algal genera are haplontic, some of them such as Ectocarpus, Polysiphonia, and Kelps are haplo-diplontic. Fucus is diplontic.

Detailed explanation-2: -Polysiphonia is a red algae with haplo diplontic life cycle and Fucus is a brown alga with diplontic life cycle.

Detailed explanation-3: -Algae such as Ectocarpus, Polysiphonia and Kelp are haplo-diplontic.

Detailed explanation-4: -Fucus shows diplontic life cycle where the diploid sporophytic phase is dominant over haploid gametophytic phase.

Detailed explanation-5: -The haplo-diplontic life cycle is seen in all bryophytes and pteridophytes, along with certain algae. It is also observed in certain algae like Ectocarpus, Polysiphonia and kelps.

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