Question

what is Asexual reproduction? give example​

Answer 1

Answer:

Organisms choose to reproduce asexually by different means. Some of the asexual methods are binary fission (e.g. Amoeba, bacteria), budding (e.g. Hydra), fragmentation (e.g. Planaria), spore formation (e.g. ferns) and vegetative propagation (e.g. Onion).

Answer 2

Answer:

$asexual \: reproduction -$

Asexual reproduction is a mode of reproduction in which the new offspring arise from a single parent. The offsprings are identical to each other, both physically as well as genetically. They are the exact copies of their parent cell. Hence, they are ‘clones’. We observe asexual reproduction in both unicellular and multicellular organisms.

$features -$

• It involves a single parent
• There is no gamete formation or fertilization
• The whole process takes place in a small period of time
• Rapid multiplication and growth happens
• There is limited variation (genetically similar offsprings)

$modes -$

1) Fission

Fission means division. During asexual reproduction, the parent cell divides into two or more cells. Unicellular organisms show different patterns of cell division according to their cell structure. For example, an amoeba can divide itself into two at any plane but the division in euglena is longitudinal.

Fission can be of two types, namely, binary fission and multiple fission. In binary fission, parent cell divides into two equal halves called daughter cells. Daughter cells are identical to each other and to their parent cell. Organisms like the amoeba, bacteria, euglena, etc., exhibit binary fission.

Asexual

During multiple fission, organism divides itself into numerous daughter cells. Examples of multiple fission are sporozoans

Asexual Mode of Reproduction

Reproduction in Animals

Asexual Mode of Reproduction

Did you ever wonder how various organisms reproduce? Not every organism is capable of reproducing sexually. There are so many hidden surprises for you in this chapter! We will study a different form of reproduction in organisms. It is known as asexual reproduction. We will have a brief look at its characteristics and types.

Suggested Videos

ArrowArrow

ArrowArrow

Reproduction in Animals

Fertilization

Oviparous and Viviparous Animals

Solve

Questions

Explain the process of fission in amoeba with diagram.

1 Verified answer

Transversely placed syncarpous ovary occurs in

1 Verified answer

Upon observing the slides showing stages of reproduction in Yeast and Amoeba .The correct observation are that of student(s)

students, I, II, III and IV, reported their observations as given below :

I. Cytokinesis was seen in the Yeast cell.

II. A chain of buds was seen due to reproduction in Amoeba.

III. Elongated nucleus was dividing to form two daughter nuclei in Amoeba.

IV. Single cells of Amoeba and yeast were undergoing binary fission and budding respectively.

1 Verified answer

VIEW MORE

What is Asexual Reproduction?

Asexual reproduction is a mode of reproduction in which the new offspring arise from a single parent. The offsprings are identical to each other, both physically as well as genetically. They are the exact copies of their parent cell. Hence, they are ‘clones’. We observe asexual reproduction in both unicellular and multicellular organisms.

Features of Asexual Reproduction

It involves a single parent

There is no gamete formation or fertilization

The whole process takes place in a small period of time

Rapid multiplication and growth happens

There is limited variation (genetically similar offsprings)

Modes of Asexual Reproduction

Organisms choose to reproduce asexually by different means. Some of the asexual methods are binary fission (e.g. Amoeba, bacteria), budding (e.g. Hydra), fragmentation (e.g. Planaria), spore formation (e.g. ferns) and vegetative propagation (e.g. Onion). Let us now look at the different modes of asexual reproduction in brief.

1) Fission

Fission means division. During asexual reproduction, the parent cell divides into two or more cells. Unicellular organisms show different patterns of cell division according to their cell structure. For example, an amoeba can divide itself into two at any plane but the division in euglena is longitudinal.

Fission can be of two types, namely, binary fission and multiple fission. In binary fission, parent cell divides into two equal halves called daughter cells. Daughter cells are identical to each other and to their parent cell. Organisms like the amoeba, bacteria, euglena, etc., exhibit binary fission.

Asexual

During multiple fission, organism divides itself into numerous daughter cells. Examples of multiple fission are sporozoans and algae.

2) Fragmentation

Fragmentation is another mode of asexual reproduction. Multi-cellular organisms like planaria, spirogyra, etc. reproduce by fragmentation. The parent body divides into two or more fragments. Later, each fragment develops into a new individual.

3) Regeneration

When a lizard loses its tail, it grows a new one. This is known as regeneration. In many organisms, there are specialized cells, which can differentiate and grow into a new organism. Organisms like hydra and planaria also show regeneration. In these organisms, when the cell divides into numerous pieces, each piece proliferates and differentiates to regenerate new organisms.