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Questions
List two advantages of vegetative propagation.
List four advantages of vegetative propagation.
Explain any three advantages of vegetative propagation.
Solution
Advantages of vegetative propagation:-
- Only one parent is required for reproduction; this eliminates the need of special mechanisms (pollination).
- Many plants are able to tide over unfavourable conditions because of the presence of vegetative reproductive parts like tubers, corm and bulbs.
- Plants that do not produce seeds are propagated by this method, e.g., sugarcane and potato.
- Vegetative propagation is a cheaper, easier and rapid method of propagation in plants than growing plants from their seeds. For example, lilies grow very slowly and take four to seven years to develop flowers when their seeds are grown, but flowers are produced only after a year or two when grown vegetatively.
- Useful traits can be preserved as genetically identical offsprings are produced.
- Special mechanisms, such as pollination and the agents that help in pollination, are not needed as only one parent is required.
- Seedless plants can be produced through vegetative propagation.
- The trait (character) of the parent plant is preserved and the offspring are genetically identical.
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RELATED QUESTIONS
A student while observing an embryo of a gram seed listed various parts of the embryo as listed below :
Testa, Micropyle, Cotyledon, Tegmen, Plumule, Radicle. On examining the list the teacher commented that only three parts are correct. Select these three correct parts :
(a) Cotyledon, Testa, Plumule
(b) Cotyledon, Plumule, Radicle
(c) Cotyledon, Tegmen, Radicle
(d) Cotyledon, Micropyle, Plumule
What is a tuber? Name one stem tuber and one root tuber.
An organism which may be considered to be a kind of plant and reproduces by budding is :
(a) Paramecium
(b) Bread mould
(c) Hydra
(d) Yeast
The two organisms which can regenerate fully from their cut body parts are :
(a) Paramecium and Hydra
(b) Hydra and Amoeba
(c) Planaria and Leishmania
(d) Hydra and Planaria
When the branches of a plant growing in the field are pulled towards the ground and a part of them is covered with moist soil (leaving the tips of the branches exposed above the ground), then after some time new roots develop from the parts of branches buried in the soil. On cutting these branches from the parent plant, new plants are produced from the cut parts of branches which had developed roots.
(a) What is this method of propagation of plants known as?
(b) What type of branches should a plant have to be able to be propagated by this method?
(c) Name any two plants which are grown for their flowers and propagated by this method.
(d) Name any two plants which are grown for their fruits and propagated by this method
(e) Name one plant which gets propagated by this method naturally by forming runners (soft horizontal stems running above the ground).
Fill in the following blank with suitable word :
Fusion of gametes gives rise to a single cell called ............
How is vegetative propagation economically important?
Write a note on different types of endosperms in angiosperms.
The "Eyes" of the potato tuber are ______.
