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which of the following features are true...

which of the following features are true for bryophytes? (A) Zygotic meiosis (B) Zygotic mitosis (C) Sporic meiosis (D) Vegetative reproduction by fragmentation

A

(A),(B)&(C)

B

(B),(C)&(D)

C

Only (A)&(D)

D

(A),(B)&(D)

Text Solution

AI Generated Solution

The correct Answer is:
To determine which features are true for bryophytes, we need to analyze each option provided in the question. ### Step-by-Step Solution: 1. **Understanding Bryophytes**: Bryophytes are non-vascular plants that include mosses, liverworts, and hornworts. They have a unique life cycle that involves both a gametophyte and a sporophyte generation. 2. **Analyzing Option (A) Zygotic Meiosis**: - Zygotic meiosis refers to a process where the zygote undergoes meiosis to produce spores. In bryophytes, the zygote does not undergo meiosis; instead, it develops into a sporophyte that is dependent on the gametophyte. - **Conclusion**: This option is **false** for bryophytes. 3. **Analyzing Option (B) Zygotic Mitosis**: - Zygotic mitosis refers to the process where the zygote undergoes mitosis to develop into a multicellular organism. In bryophytes, the zygote does undergo mitosis to form the sporophyte. - **Conclusion**: This option is **true** for bryophytes. 4. **Analyzing Option (C) Sporic Meiosis**: - Sporic meiosis is the process where meiosis occurs in the sporophyte to produce spores. In bryophytes, the sporophyte produces spores through meiosis, which then develop into gametophytes. - **Conclusion**: This option is **true** for bryophytes. 5. **Analyzing Option (D) Vegetative Reproduction by Fragmentation**: - Bryophytes can reproduce vegetatively by fragmentation, where a part of the gametophyte breaks off and develops into a new plant. - **Conclusion**: This option is **true** for bryophytes. ### Final Answer: The features that are true for bryophytes are: - (B) Zygotic Mitosis - (C) Sporic Meiosis - (D) Vegetative Reproduction by Fragmentation Thus, the correct options are **B, C, and D**.
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Knowledge Check

  • Which of the following is not the feature of meiosis?

    A
    Meiosis involves two sequenctial cycles of nuclear and cell division, meiosis I and meiosis II but only a single cycle of DNA replication.
    B
    Meiosis I is initiated after the parental chromosomes have replicated to produce identical sister chromatids at the S-phase.
    C
    Meiosis involves pairing of non-homologous chromosomes and recombination between them.
    D
    Four haploid cells are formed at the end of meiosis II.
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