In which of the following zygotic meiosis occurs?

Complete answer: Zygotic meiosis occurs in chlamydomonas. When the zygote divides meiotically or when zygote undergoes reduction division after division of nucleus i.e. after karyogamy it is called as zygotic meiosis. Zygote is a stage that is formed after fertilization.

Where does zygotic meiosis occur?

The zygote undergoes meiotic division to form haploid spores and thus zygotic meiosis occurs in most algae. The haploid spores undergo mitosis to form haploid gametophytes. The gametophyte is the free-living, dominant phase in organisms with a haplontic life cycle. Gymnosperms are higher plants that produce seeds.

In which of the following zygotic meiosis can be seen?

The zygotic meiosis is found in the haplontic life cycle, in which meiosis occurs in zygote. The gametic meiosis occurs in some fungi, in which meiosis occurs in the cells of diploid organisms to form haploid gametes.

What is zygotic meiosis in algae?

In zygotic meiosis, zygote is the only diploid structure in the life cycle. The dominant individual in the life cycle is haploid and hence, the life cycle is haplontic. Meiosis takes place at the time of zygote germination. This life cycle appears in all fungi and some algae.

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Does Fucus have zygotic meiosis?

Zygotic meiosis is the characteristic of a) Fucus b) Funaria c) Marchantia d) Chlamydomonas. In zygotic meiosis, meiotic division happens in zygote resulting in the development of haploid individuals. Thallophytes have dominant gametophytic generation i.e., the proximity of haploid individuals.

Does zygotic meiosis occurs in spirogyra?

Reason: Zygotic meiosis occurs in Spirogyra. … A life cycle characterized by a haploid thallus, and zygotic meiosis is called haplontic life cycle it is also called as haplobiontic because onl a single type of free living individual is involved in the life cycle.

Does zygotic meiosis occurs in marchantia?

Note:Zygotic meiosis is a characteristic feature of haploid organisms and cannot take place in diploid or haplodiplontic organisms or organisms with alternate life cycle. Dryopteris and pinus show haplodiplontic life cycle and marchantia show alternate haploid diploid generation.

What is zygotic meiosis Class 11?

In zygotic meiosis, meiotic division occurs in zygote resulting in the formation of haploid individuals. In thallophytes, haploid plant body is not differentiated into root, stem and leaves.

Do gymnosperms show zygotic meiosis?

In bryophytes and pteridophyte- Sporic meiosis takes place. It produces haploid spores. And each spore gives rise to gametophyte body. … So that meiosis in gymnosperms is considered as gametic meiosis.

Do bryophytes show zygotic meiosis?

Thinking Process All algae except Fucus, Ectocarpus, Dictyota and a few other, show haplontic life cycle or zygotic meiosis, Bryophytes and pteridophytes show haplodiplontic life cycle and undergo sporic meiosis.

What is zygotic meiosis gametic meiosis?

Two types of life cycle are zygotic meiosis and gametic meiosis. … The zygote is the only diploid (2n) stage that divides by meiosis (that is why called zygotic meiosis) and again produces vegetative cells with 1n chromosome number. Gametic Meiosis :The organism spends most of its life cycle in the 2n condition.

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What is zygotic mitosis?

When the zygote divides meiotically immediately after karyogamy is called as zygotic meiosis. Such type of meiosis mainly occurs in haploid organisms e.g., Chlamydomonas, fucus etc.

What respectively are zygotic meiosis gametic meiosis and Sporic meiosis?

Gametes from adult haploid individuals unite forming the diploid zygote. The zygote undergoes meiosis and generates four haploid cells that by mitosis develop into adult individuals. … Sporic meiosis happens in metagenesis (alternation of generations, or diplobiontic life cycle).