Angiosperms and plant life cycles - haplontic to diplontic — practice questions
5 questions in the bank on this idea. Below are 5 of them, exactly as they appear in a test.
In angiosperms, the dominant plant body belongs to which generation?
- A. Sporophyte
- B. Gametophyte
- C. Protonema
- D. Prothallus
Match List-I with List-II. List - I List - II A Pteridophyte I Salvia B Bryophyte II Ginkgo C Angiosperm III Polytrichum D Gymnosperm IV Salvinia Choose the option with all correct matches.
- A. A-III, B-IV, C-I, D-II
- B. A-IV, B-III, C-II, D-I
- C. A-III, B-IV, C-II, D-I
- D. A-IV, B-III, C-I, D-II
What defines a diplontic life cycle?
- A. The diploid sporophyte is the dominant free-living phase and the haploid phase is represented mainly by gametes
- B. The haploid gametophyte is the only free-living phase
- C. Both generations are equally dominant and morphologically identical
- D. The organism lacks meiosis entirely
A plant has a dominant diploid body, while its male gametophyte is reduced to a pollen grain and its female gametophyte develops within the ovule. Which group does this description most strongly indicate?
- A. Angiosperms
- B. Bryophytes
- C. Most green algae
- D. Pteridophytes
Plant P has a dominant haploid body and a brief diploid zygote stage. Plant Q has independent multicellular haploid and diploid phases. Plant R has a dominant diploid body with highly reduced gametophytes. Which life-cycle sequence best matches P, Q and R?
- A. Haplontic, haplodiplontic, diplontic
- B. Diplontic, haplontic, haplodiplontic
- C. Haplodiplontic, diplontic, haplontic
- D. Haplontic, diplontic, haplodiplontic
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