Question

The motile reproductive structures of algae and fungi, which directly give rise to new individuals are called
A) Zygospores
B) Zoospores
C) Cysts
D) Conidia

Answer 1

Asexual reproduction is a method of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. It is a primary form of reproduction which is mainly used by single-celled organisms such as archaea and bacteria. This form of reproduction can be seen in several multicellular animals, plants, and fungi also.

Complete answer:
Asexual reproduction is a type of reproduction without any sexual fertilisation does not take place. In this type of reproduction, the fusion of gametes or change in the number of chromosomes. Here the genes of the parent inherit directly to the new offspring. Asexual reproduction is the primary form of reproduction which is noticed in single-celled organisms such as archaea and bacteria and many multicellular animals, plants, and fungi.
A spore is a unit of reproduction which is adapted for dispersal and survival in adverse periods. Spores become a part of the life cycles of many plants, algae, fungi, and protozoa.
The motile reproductive structures of algae and fungi, which directly give rise to new individuals are known as the zoospores which is an asexual motile spore. The zoospores use flagella for their locomotion. They are either freed by the separation of the zoosporangia wall or by building an apical pore on the zoosporangium. After liberation, the zoospores swim for a while. After that, they withdraw their flagella and finally germinate into new plants.
A zygospore refers to a stage of diploid reproductive which is noticed in the life cycle of many fungi and protists. Zygospores are formed by the nuclear fusion of haploid cells and remain dormant until suitable environmental cues, such as light, moisture, heat.
The conidia are an asexual and non-motile spore found in the fungi. They are produced through the cellular process of mitosis.
A cyst is a closed sac-like structure that possesses a distinct envelope and this is formed by the division compared with the nearby tissue.

Therefore, the correct option is option B.

Note: Asexual reproduction is a type of reproduction observed in single-celled organisms such as archaea and bacteria and many multicellular animals, plants, and fungi. The motile reproductive structures of algae and fungi, which directly give rise to new individuals are known as the zoospores. It is an asexual motile spore.