Tag: asexual reproduction in organisms

So, the correct answer is 'Meiosis and Mitosis'.

A.zygospore – it is the product of fertilization. It is a diploid structure in the life cycle of Chlamydomonas. It undergoes meiosis and form into a new Chlamydomonas cells.

B.Zoospore – Flagellated, motile structures formed during asexual reproduction in Chlamydomonas is called Zoospore. It is haploid, formed by mitosis.

C.Hyponospore – Thick walled resting spore formed during unfavourable conditions is called Hypnospore.

D.Aplanospore – Aflagellated, non motile spores formed during asexual reproduction is called aplanospore.

So, the correct option is ‘zygospore’.

• Thick-walled non-motile spores formed to tide over unfavorable condition is called  Hypnospores. They germinate on the arrival of favorable conditions. e.g., Chlamydomonas, Ulothrix.

The motile reproductive structures of algae and fungi, which directly give rise to new individuals are called zoospores. It is a asexual motile spore. It uses flagella for locomotion. The zoospores are liberated either by the disintegration of the zoosporangial wall or by the formation of an apical pore on the zoosporangium. After liberation the zoospores swim for a while, then with­draw their flagella, encyst and ulti­mately germinate into new plants.

Fungi reproduces asexually by means of sporangia. Sporangiospores are spores that are produced in a sporangium (plural: sporangia). A sporangium in fungi (but not mosses and some other organisms) is simply a cell containing spores. 

Sori are asexually reproducing structures produced on the abaxial surface of the leaf and produce haploid spores, that germinates to form the independent gametophyte.