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प्रश्न
A plant shows thallus level of organization. It shows rhizoids and is haploid. It needs water to complete its life cycle because the male gametes are motile. Identify the group to which it belongs to ______.
पर्याय
Pteridophytes
Gymnosperms
Monocots
Bryophytes
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उत्तर
A plant shows thallus level of organization. It shows rhizoids and is haploid. It needs water to complete its life cycle because the male gametes are motile. Identify the group to which it belongs to bryophyte.
Explanation:
A plant shows the thallus level of organization. It shows rhizoids and is haploid. It needs water to complete its life cycle because the male gametes are motile. It may belong to bryophytes.
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संबंधित प्रश्न
Name three groups of plants that bear archegonia. Briefly describe the life cycle of any one of them.
Explain briefly the following term with a suitable example:
Antheridium
Explain briefly the following term with a suitable example:
Archegonium
Explain briefly the following term with a suitable example:
Diplontic
Which of the following play an important role in plant succession on bare rocks or soil?
Bryophytes that prevent soil erosion by forming dense mats on the soil are ______.
Protonema is ______.
The plant body in higher plants is well differentiated and well developed. Roots are the organs used for the purpose of absorption. What is the equivalent of roots in the less developed lower plants?
Why are bryophytes called the amphibians of the plant kingdom?
The correct sequence of events in the life cycle of bryophytes is:
- Fusion of antherozoid with egg.
- Attachment of gametophyte to substratum.
- Reduction division to produce haploid spores.
- Formation of sporophyte.
- Release of antherozoids into water.
Choose the correct answer from the option given below:
Match List - I with List - II.
| List - I | List - II |
| A. Chlorophyll a | I. Yellow-green |
| B. Chlorophyll b | II. Yellow |
| C. Xanthophylls | III. Blue-green |
| D. Carotenoids | IV. Yellow to Yellow-orange |
Choose the option with all correct matches.
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.
Identify the pair of heterosporous pteridophytes among the following:
Assertion A: The first stage of gametophyte in the life cycle of moss is protonema stage.
Reason R: Protonema develops directly from spores produced in capsule.
In the light of the above statements, choose the most appropriate answer from the options given below:
