Question

What is asexual reproduction ??:explain in easy terms

Answer 1

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$\small \bf \pink{Your \: answer : }$

$\bf{Asexual \: reproduction : }$

When a single parent is involved in the process, it is called asexual reproduction. Following means of asexual reproduction are used by plants:

(a) BUDDING : This method is used by unicellular plants like yeast. Yeast is a fungus and fungi are also known as non - green plants. The yeast cell produces a bud which gets its own nucleus. The bud develops to certain size and detaches from the mother cell to produce the new yeast .

(b) FRAGMENTATION : In some simple plants the plants body is divided into smaller fragents. Each fragments then develops into a new plants.
EXAMPLE : Spirogya

(c) Spore Formation: Special spore - bearing organs are present in some plants ; especially in fungi and algae. There are called sprorangiophores.
The sprorangiophores bears spores. The spores germinate to develop a new plant.

(d) Vegetative propagation: Reproduction in the plants trough vegetation parts such as stem, root, leaves and buds.

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Answer 2

Hey friend here is your answer......

Answer :


$\bold{Asexual \: Reprouduction}$


There are two basic modes of reproduction - Asexual and sexual . Asexual reproduction requires only one parent . A part of the parents body gives rise to an individual . The offspring produced by asexual reproduction have the same characters as the parent, that is, the parents genetic traits are carried by the offspring generation after generation .

Asexual reproduction occurs mostly among lower organisms . However, it can also occur among higher plants and animals . It can take place in several ways .

❀ Binary Fission

❀ Budding

❀ Fragmentation

❀ Regeneration

❀ Spore formation

❀ Vegetative Propagation

❉ $\bold{Binary \: Fission}$


This is the simple division of a unicellular organisms into two daughter cells . The genetic material in the parent cell's nucleus is duplicated before division occurs . The parent cell's nucleus then divides into two , distributing equal amounts of genetic material in the daughter nuclei . The middle of the cell gets constricted after this . This portion becomes more and more narrow, until the cell splits into to the two daughter cells grow and then divide similarly . Reproduction by binary fission takes place among the simplest organisms , like Amoeba , Paramecium and bacteria .

In some organisms, like chlorella and chlamydomonas, which are types of algae, one cell divides into four daughter cells , or undergoes Multiple Fission .

❉ $\bold{Budding}$


In this process, a new organism develops from an outgrowth called the bud on the parent's body . The new organism remains attached to the parents body as it grows, and then separates when it is mature enough to let its individual life . Budding is common among some simple organisms such as yeast and hydra . However, the process the first a little in these two organisms . In yeast , a cell divides unequally to produce two cells. Initially , an outgrowth appears at a certain point on a cell due to the accumulation of cytoplasm . The nucleus of the cell that divides into two and one of the nuclei moves into the smallest cell . The largest cell formed is called the 'mother' cell and the smallest cell is called the bud or the 'daughter' cell . The bud may detach from the mother cell completely or remain attached to it . The process of budding in yeast is very fast and can produce chains of buds . Each cell gives rise to one or more buds, which in turn produce their own buds .

In hydra , repeated cell division at a certain point on the parent's body produces an outgrowth, or budd . This bud develops into a new organism . The new organism grows to maturity before detaching from the parent's body .


❉$\bold{Fragmentation}$


Fragmentation is a form of a sexual reproduction in which new organisms are formed from pieces of the parents body. Following fragmentation, each fragmented part develops into a separate individual . Fragmentation is seen in many organisms, including some types of fungi, plants, annelids , flatworms and see stars . Organisms like spirogyra, which are made of filaments, or long, ribbon like structures, also reproduced this way . The filament grows as the cells that constitutes it grow and divide . Sometimes, the filament breaks into two or more parts and each such part grows into an individual .

❉$\bold{Regeneration}$


Regeneration is a modified form of fragmentation . Organisms such as hydra , earthworms, flatworms and starfish can regrow , or regenerate , lost or damaged parts of their body . These organisms can also give rise to new individuals from their broken body parts . There are other organisms which can regenerate certain broken parts .

For example , a lizard can grow back its tail and a grasshopper its legs , but they cannot give rise to complete new individuals .

❉ $\bold{Vegetative \: Propagationn}$


This process takes place in certain plants which do not produce seeds or whose seeds fails to germinate . Such reproduction involves not the seed-producing organs of plants, but the vegetative parts that do not take part in sexual reproduction . Hence, it is called vegetative propagation, or reproduction . In this process, new plants are produced from various parts of the plant, such as the stem or the leaves .

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