Consider the given statements regarding patterns of life cycle in living organisms:
I. In haplontic life cycles, zygotes are the only diploid cells; mitosis occurs only in the diploid phase.
II. In diplontic life cycles, gametes are usually the only haploid cells, and mitosis usually occurs only in the haploid phase.
III. In haplo-diplontic life cycle, alternation of generations is marked and mitosis occurs in both haploid and diploid phases.
1. Only III is correct | 2. Both I and II are correct |
3. All are correct | 4. All are incorrect |
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1. | Gymnosperm | 2. | Angiosperm |
3. | Bryophyte | 4. | Pteridophyte |
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The life cycle of Ectocarpus, Polysiphonia and kelps is:
1.Diplontic
2.Haplontic
3.Aplantic
4.Haplo-diplontic
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The given pattern of life cycle will be seen in:
1. Spirogyra | 2. Fucus |
3. Ectocarpus | 4. Polysiphonia |
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The given pattern of life cycle will be seen in:
1. Spirogyra | 2. Fucus |
3. Ectocarpus | 4. Polysiphonia |
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The given pattern of life cycle will be seen in:
1. Spirogyra | 2. Fucus |
3. Chlamydomanas | 4. Polysiphonia |
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I. | Sporophytic generation is represented only by the one-celled zygote. |
II. | Meiosis in zygote results in the formation of haploid gametes. |
III. | The dominant photosynthetic stage is the free living gametophyte |
1. | Only I is correct |
2. | Only I and III are correct |
3. | Only II is correct |
4. | I, II and III are correct |
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
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1. Red algae | 2. Bryophytes |
3. Pteridophytes | 4. Gymnosperms |
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