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vegtative reproduction . Mohan sai srinivas ^J class 5 E ^.pptx
- 1. Vegetative Reproduction Presented by Mohan Sai Srinivas Standard: 5E
- 2. Vegetative Propagation โ Meaning 1. Vegetative propagation is a process in which plants reproduce from stems, roots, spores and leaves. 2. It is a form of asexual reproduction seen in plants. Such propagation methods used to improve the plants. 3. Vegetative propagation is very peculiar to plants as we do not always need seeds to grow plants. 4. Grafting and Budding โ Growing new plants from older plants using
- 3. Vegetative Propagation โ Meaning ๏ต Non-vascular plants โ the vegetative reproductive structures is spores ๏ต Vascular plants โ the vegetative reproductive structures are roots, stems, leaves. ๏ต Meristem tissue โ This tissue also helps in the vegetative propagation. It has undifferentiated cells which divide. As a result, it paves the way for the growth of the plant. Also, from the meristems , specialized permanent tissues are formed.
- 4. Types of Vegetative Propagation Vegetative propagation by Roots โ ๏ต In this process , new plants grow out of the modified roots called tubers. ๏ต In some plant species, roots develop adventitious buds. There buds grow and form new plants/sprouts under the right conditions. ๏ต Examples of plants which grow through roots are โ Sweet potato Dahlia (These sprouts can be separated from the parent plant and when planted in other areas, new plants are formed)
- 5. Types of Vegetative Propagation- Vegetative Propagation by stems โ ๏ต Vegetative propagation occurs through stems when new plants arise from the nodes. This is where buds are formed , which grow into new plants. ๏ต Stems that grow horizontally on the ground are called runners. As these runners grow, buds from at the nodes, which later develop the roots and shoots, resulting in the formation of a new plant. Examples โ Mint. ๏ต The bulb is the round, swollen part of the underground stem. Within the bulb lies the organ for vegetative propagation such as the central shoot that grows into a new plant. Examples โ Onions, Garlic, and Tulips. ๏ต We can find stem tubers in plants like potatoes. This part is the swollen apical part containing many nodes or eyes. Every eye has buds . New plants originate from these buds.
- 6. Vegetative Propagation by Leaf Vegetative propagation by leaves โ ๏ต Vegetative propagation occurs through process of CUTTING. ๏ต A part of a plant i.e. leaf, is cut off and planted. Adventitious roots develop from the cuttings and a new plant forms. ๏ต Examples of plants which grow through leaves are โ Plantlets โ Kalanchoe daigremontianin (They are miniature structures that arise from meristem in leaf margins that eventually develops roots and drop from the leaves they grew on) Begonia and Bryophyllum - This is a form of asexual reproduction in which new plants grow from the buds growing on the margin of the leavens. These buds are reproductive in nature and when they fall on the ground they germinate and form a new plant.
- 7. Vegetative Propagation by Spores Vegetative propagation by spores โ ๏ต Spores are asexual reproductive bodies. ๏ต Each spore is covered by a hard protective coat to withstand unfavourable conditions such as high temperature and low humidity . So they can survive for a long time. ๏ต Under favourable conditions, a spore germinates and develops into a new individual. ๏ต Examples โ Moss and Ferns.