what are the various mode of asexual reproduction
Answers
Answer:
The mode of reproduction in which the offsprings are produced by single parent is called asexual reproduction. The offsprings are the exact photocopies of their parent.
The different modes of reproduction are:
Fission: A parent cell divides into two or more cells. Example: Amoeba
Fragmentation: The parent’s body dic=vides into fragments and the fragment grows into a new organism. Example: spirogyra
Regeneration: If a part of the body is lost then it can grow again into a new one. Example a lizard’s tail
Budding: The buds formed on the individual grow into a new organism then detaches from the parent organism. Example: Hydra
Vegetative propagation: Plants reproduce asexually through their vegetative parts such as leaves, roots, stem, and buds.
Spore formation: Organisms which belong to the fungi group produce spores within a sac-like structure called sporangium
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・❥・Asexual Reproduction :-
Asexual reproduction is a mode of reproduction in which a new offspring is produced by a single parent. The new individuals produced are genetically and physically identical to each other, i.e., they are the clones of their parent. Asexual reproduction is observed in both multicellular and unicellular organisms.
・❥・Different methods of asexual reproduction :-
- Binary fission- The process in which parent cell elongates and gets divided into two identical daughter cells is called binary fission. Each daughter cell grows into an independent adult. It takes place in unicellular organisms.
- Endospore Formation- The method in which a spore wall is formed around a bacterial cell to form an endospore is called endospore formation. Under favorable conditions, this endospore germinates to form an active bacteria.
- Vegetative propagation- The type of asexual reproduction in which vegetative parts of a plant like stems, leaves, and root, etc. give rise to new ones is called vegetative propagation.
Examples: stem cutting in Champa, eye growth in potatoes, bud in case of Myriophyllum.
- Budding: It involves the formation of a new organism from a projection called bud. After growing to full size, the budgets detached from a parent and forms a new independent individual. It is commonly observed in yeast.
- Spore Formation: In this mode of reproduction, spores germinate and develop into a new individual, under favorable conditions. The spores are tiny spherical unicellular structures protected by a thick wall. It is seen in ferns and moss.
- Fragmentation: It is a form of asexual reproduction in which a new organism is formed from the fragments of the parent organism. It is the only mode of asexual reproduction in Spirogyra.