Question

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Explain all the types of asexual reproduction???

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Answer 1

$\huge{\mathsf{Asexual \ Reproduction}}$

»When an off spring produced from the specalised cells or parts of a single parent,it is called as Asexual Reproduction

»The variations are less,the parent organism is similar to the progeny

Types of Asexual Reproduction:

★Fission:

Division of cell to produce daughter cells

Further,Fission can be categorised into:

1. Binary Fission:

• When the parent cell divides to form two daughter cells
• Occurs only in favourable conditions
• First the nucleus divides,then the cytoplasm is divided
• E.g.,Amoeba

2.Multiple Fission:

• When the parent cell forms many cells
• Occurs under both favourable and unfavourable conditions
• Firstly,the cytoplasm divides
• E.g., Plasmodium

★Fragmentation:

The parent cell form many fragments which regrow to form a completely new organism,it is called Fragmentation.

★Budding:

The parent body produces a bulb like outgrowth which develops into a new organism,and finally gets detached. But in some cases,they don't get separeated,thus forming a chain.

★Regeneration:

Replacing of an organ or a tissue by autonomy is called as Regeneration. It due to presence of

de differentiated cells

★Vegetative Propagation:

Growth of a new plant from vegetative parts of the plant,i.e,stem, roots etc is termed as Vegetative Propagation

Advantages of Vegetative Propagation:

If any desired traits,they continue throughout the parent plant to daughter plant

Disadvantages:

•If any undesirable traits,pass from one generation to another

•Desired traits can't be introduced

•In due time,the plants lose immunity

Answer 2

Answer:

Fisson:

In this process the organism splits into two or more daughter cells. It involves two processes- karyokinases (splitting of nucleus), cytokinases (splitting of cytoplasm)

It has two types: Binary fission (formation of single individual, Multiple fission (formation of many individual.

Budding:

In this process, the organism develops a group of cells called bud. This bud develops and later detatches from parent body to form a new individual.

Spore Formation:

In this process, the organism produces spores which are covered by a hard protective layer called cyst. These spores when come in environment with favourable conditions, the cyst breaks and many new individuals are produced by spores.

Fragmentation:

In this process, organism is divided into pieces and each piece develops into new individual.

Regeneration:

This occurs in some specialised cells. Accidently, the organism is cut into pieces, each piece develops into new individual.

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