Question

Zygotic meiosis is the characteristic of

• A. Fucus
• B. Funaria
• C. Marchantia
• D. Chlamydomonas

Answer 1

The correct option is D

Chlamydomonas

The correct option is D.

The explanation for the correct option:

1. When the zygote divides meiotically or when the zygote undergoes reduction division after division of the nucleus i.e. after karyogamy it is called zygotic meiosis.
2. A hallmark of haploid creatures, zygotic meiosis cannot occur in diploid, haplodiplontic, or organisms having alternate life cycles.
3. Chlamydomonas is haploid plant.
4. As Chlamydomonas pertains to kingdom Plantae and division Thallophyta, zygotic meiosis is the characteristic feature observed in them.

The explanation for the incorrect options:

Option A:

1. Fucus is a large multicellular organism.
2. They thrive in relatively cool waters, intertidal zones, and shallow waters.
3. It is a kind of brown algae.
4. It undergoes an alternation of generation that alternates between diploid (2n) and haploid (n) phases..

Option B:

1. Funaria is a common type of moss.
2. The plant has a branched axis, spiral arranged leaves, and branched.
3. Funaria has a haplo-diplontic form of life cycle.
4. A semiparasitic diploid sporogonium alternates with a free-living haploid gametophyte throughout the life cycle (Sporophyte)

Option C:

1. Marchantia is a genus of non-vascular land plants.
2. They are commonly classified as a bryophyte.
3. It can reproduce both sexually and asexually.
4. Its life cycle alters between the haploid and diploid phases.

Final answer: Zygotic meiosis is the characteristic of Chlamydomonas.