Page 66 - EM BIOLOGY NOTES 10TH CLASS PSR DIGITAL BOOKS

DRAWING DIAGRAMS - PARTS - PROCEDURE

ASEXUAL REPRODUCTIVE METHODS Asexual Reproductive Methods
1. The ability of an organism to produce a new generation of
individuals of the same speacies is called Reproduction.
2. In Asexual reproduction, new individuals are produced without the fusion of gametes.
3. Organisms can reproduce asexually in many ways. They are :
1. Fission : Single celled organisms such as bacteria, Amoeba, Eugleena and
Paramoecium, reproduce by splitting into two or more off springs.
2. Budding : 1. A growth on a body (bud) that grows to form nearly identical copy of the parent.
2. When the bud totally grows then it seperates from the parent and survives individual. Ex : Yeast, Hydra.
3. Fragmentation : In this process a detached fragment of fungal hyphae gives
rise to new individual under suitable conditions. Ex : Algae, Fungi
4. Sporulation : 1. Most of the fungi like Rhizopus, Mucor etc. Bacteria and non-
flowering plant such as fern and moss reproduce by the method of spore formation.
2. A spore is a small microscopic, unicellular, reproductive unit. Ex : Asperigillus,
Mucor, Moss, Fern.
5. Regeneration : If the individual is somehow cut or broken up into many pieces,
these pieces grow into seperate individuals. Ex : Planaria.

NATURAL VEGETATIVE PROPAGATION METHODS Natural Vegetative Propagations

How to draw
1. Several plants may be grown from vegetative pl. scan QR
parts like stems, roots, leaves etc and is called
vegetative propagation.
2. Vegetative propagation may be natural or man made.
3. 1. Leaves / Leaf buds - Bryophyllum

2. Stems - Stolons - Vallisneria, Strawberry
Bulbs - Onion (Alliumsepa)
Corns - Colacasia
Tuber - Potato

3. Roots - Dahlia, Radish, Carrot.

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