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प्रश्न
Explain briefly the following term with a suitable example:
Antheridium
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उत्तर
Antheridium is the name for the male sexual organ found in cryptogams, which include algae, fungus, bryophytes, and pteridophytes. The male gametes, or antherozoids, are produced by it. It could be made up of just one cell, or it could have a wall that encloses the growing gametes in a sterile jacket comprised of one or more layers.
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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:
protonema
Explain briefly the following term with a suitable example:
Archegonium
Explain briefly the following term with a suitable example:
Diplontic
Which is NOT a character of bryophytes?
Which of the following play an important role in plant succession on bare rocks or soil?
Amphibians of the plant kingdom are
Gemmae are present in ______
Bryophytes that prevent soil erosion by forming dense mats on the soil are ______.
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:
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:
