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Earn 100
Haplodiplontic life cycle is observed in
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Important Questions on Plant Kingdom
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Match the plant with the kind of life cycle it exhibits:
| List-I | List-II | ||
| (a) | Spirogyra | (i) | Dominant diploid sporophyte vascular plant, with highly reduced male or female gametophyte |
| (b) | Fern | (ii) | Dominant haploid free-living gametophyte |
| (c) | Funaria | (iii) | Dominant diploid sporophyte alternating with reduced gametophyte called prothallus |
| (d) | Cycas | (iv) | Dominant haploid leafy gametophyte alternating with partially dependent mutlicellular sporophyte |
Choose the correct answer from the options given below:
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(A) Elaters
(B) Indusium
(C) Agar
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Assertion (A): In evolution, the distribution of Bryophytes and Pteridophytes, was limited.
Reason (R) : The need for water for the transportation of male gametes and fertilization limited their distribution.
The correct option among the following is:
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Match the following lists:
| List- | List- | ||
| A. | Protonema | Useful in spore dispersal | |
| B. | Circinate venation | Coiling of young leaves in Pteridophytes | |
| C. | Elaters | Storage food in Rhodophyceae | |
| D. | Floridean starch | Juvenile stage of Bryophytes | |
| Naked ovules |
The correct match is
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Assertion (A): Bryophytes are the amphibians of the plant kingdom.
Reason (R): They are found in swamps and areas, where water and land meet.
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Based on the following characteristics of life cycles identify and arrange the plants respectively.
| A) Haplontic | i) Laminaria |
| B) Diplo-haplontic | ii) Volvox |
| C) Haplo-diplontic | iii) Polysiphonia |
| D) Diplobiontic | iv) Salvinia |
| E) Diplontic | v) Fucus |
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(A) The sporophyte in liverworts is more elaborate than in mosses.
(B) Salvinia is heterosporous.
(C) The life cycle of all seed-bearing plants are diplontic.
(D) In Pinus, male and female cones are borne on different trees.
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Reason: Zygotic meiosis occurs in Spirogyra.
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