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प्रश्न
Explain briefly the following term with a suitable example:
protonema
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उत्तर
It is the first green, filamentous structure that emerges from a moss or fern spore and is typically branching. Mosses produce buds on their protonema, which mature into gametophyte plants. The protonema in the fern develops into the prothallus.
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संबंधित प्रश्न
Mention the ploidy of the following:
Zygote of a fern
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:
Sporophyll
Which is NOT a character of bryophytes?
Amphibians of the plant kingdom are
Bryophytes that prevent soil erosion by forming dense mats on the soil are ______.
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Draw labelled diagrams of
- Female and male thallus of a liverwort.
- Gametophyte and sporophyte of Funaria.
- Alternation of generation in Angiosperm.
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.
In bryophytes, the gemmae help in which one of the following?
Identify the pair of heterosporous pteridophytes among the following:
