Question

Asexual reproduction occurs in:
A)Chlamydomonas
B)Nostoc
C)Both (A) and (B)
D)None of the above

Answer 1

Hint: Asexual reproduction is a sort of reproduction that doesn't include the fusion of gametes or change in the number of chromosomes. The offspring that emerge by asexual reproduction from a single cell or from a multicellular organism acquire the genes of that parent.

Complete answer:
Asexual reproduction is the essential type of reproduction for single-celled organisms, for example, archaea and bacteria. Numerous multicellular organisms, plants and fungi can likewise reproduce through asexual reproduction.
Vegetative proliferation is a type of asexual reproduction in plants and occur in archaebacteria, eubacteria, cyanobacteria like Nostoc and protists like Amoeba. Numerous plants (green algae like Chlamydomonas) and fungi reproduce asexually. It is a cycle by which new organisms arise without production of seeds or spores.

Chlamydomonas is a family of green algae comprising around 325 species every unicellular flagellated, found in water and on moist soil, in freshwater, seawater, and even in snow. It has red eye spots for photosensitivity and reproduces both asexually and sexually. Chlamydomonas's asexual reproduction happens by zoospores, aplanospores, hypnospores, or a palmella stage, while its sexual multiplication is through isogamy, anisogamy or oogamy.
Nostoc is a class of cyanobacteria found in different conditions that forms colonies made out of fibers of moniliform cells in a coagulated sheath. They reproduce vegetatively or asexually by spore formation. The vegetative propagation is by fragmentation.

Hence, the correct answer is option (C)

Note: Vegetative propagation incorporates various types apart from vegetative propagation, for example, fission, budding, Spore formation, agamogenesis. While all prokaryotes replicate without the formation and combination of gametes, mechanisms for lateral gene transfer, for example, conjugation, transformation and transduction can be compared to sexual reproduction in genetic recombination in meiosis.