Question

explain with type of example of asexaul reproduction in unicelluar organism​

Answer 1

Answer:

The type of reproduction in which no gametes are involved and the new organisms emerge from a single parent only is called asexual reproduction. There is no fusion of gametes in asexual reproduction and the chromosome number also remains constant. Various types of asexual reproduction include division, budding, spore formation, etc.

Budding in Hydra

1. Asexual reproduction in which a new organism develops from a bud in the parent.

2. This bud is simply an outgrowth of cells at one particular site.

3. The bud or the new organism remains attached to the parent and gets detached on maturation.

Binary fission in Amoeba

1. It is the type of asexual reproduction in which the parent divides to give rise to two daughter organisms.

2. The parent replicates its genetic material and divides it equally between the two daughters.

3. Both the cytoplasm and the nucleus of the parent divides into two.

Explanation:

hope it helps you ☺️

Answer 2

Process of formation of new organism by an organism of same species without involvement of gametes is called as asexual reproduction.

There are three types of asexual reproduction in unicellular organisms.

1) Binary Fission :-Binary fission is usually performed by living organisms during favorable conditions i.e. availability of abundant food material.Prokaryotes (Bacteria), Protists (Amoeba,

Paramoecium, Euglena, etc.) and eukaryotic cell-organelle like mitochondria and chloroplasts perform asexual reproduction by binary fission. In this process, the parent cell divides to form two similar daughter cells. Binary fission occurs either by mitosis or amitosis. Eg:- Amoeba , Paramecium & Euglena.

2) Multiple Fission :-Asexual reproduction by multiple fission is performed by Amoeba and other similar protists. Amoeba stops the formation of pseudopodia and thereby movements whenever there is lack of food or any other type of adverse condition. It becomes rounded and forms protective covering around plasma membrane. Such encysted Amoeba or any other protist is called as ‘Cyst’. Many nuclei are formed by repeated nuclear divisions in the cyst. It is followed by cytoplasmic division and thus, many amoebulae are formed. They remain encysted till there are adverse conditions. Cyst breaks open on arrival of favorable conditions and many amoebulae are released.

3) Budding :-The yeast cells performing budding i.e. a small bud coming out of many parent cells. Asexual reproduction occurs by budding in yeast- a unicellular fungus. Yeast cell produces two daughter nuclei by mitotic division, so as to reproduce by budding. This yeast cell is called as parent cell. A small bulge appears on the surface of parent cell. This bulge is actually a bud. One of the two daughter nuclei enters this bud. After sufficient growth, bud separates from the parent cell and starts to live independently as a daughter yeast cell.

Eg:- Yeast

If you like my answer then Like, comment and vote

Always Stay Positive and Stay Happy