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प्रश्न
What is vegetative reproduction?
उत्तर
In this method, new plants are produced by the vegetative parts of the plants. The vegetative part mean the leaf, stem and root. Potato, mint, ginger, banana etc. are reproduced by this method.
Vegetative propagation can occur by natural methods as well as by artificial methods.
Natural method includes reproduction by stem, by roots and by leaves.
Artificial method include reproduction by cutting, layering, grafting and tissue culture.
APPEARS IN
संबंधित प्रश्न
Fertilisation is necessary even in asexual reproduction.
Explain vegetative propagation with the help of two examples. List two advantages of vegetative propagation.
What is the difference between the two asexual methods of reproduction : fission and fragmentation?
The stem of a fruit tree X fixed in soil is cut in a slanting way. The upper part of stem of another fruit tree Y of different variety of same species is also cut in a slanting way. The cut stem of tree Y, without roots but having some leaves, is placed over the rooted cut stem of tree X in such a way that their cut surfaces fit together properly. While joining the two cut stems, care is taken to make sure that the layer Z of one cut stem is in contact with layer Z of the other cut stem. The joint of cut stem is bound tightly with a piece of cloth and covered properly with polythene. Soon the cut heals and the two stems grow together and become one fruit tree producing leaves, flowers and fruits.
(a) What is the name of this method of producing plants or trees?
(b) What name is given to the cut stem of tree X having roots?
(c) What name is given to the cut stem of tree Y which has no roots but has some leaves?
(d) Name the layer Z.
(e) Why should the layer Z of one cut stem be in contact with the layer Z of the other cut stem?
(f) Name any four fruit trees which are usually bred by this technique.
(g) State any one advantage of producing fruit trees by this technique.
Fill in the following blank with suitable word :
The process of fusion of gametes is called .............
A yeast cell in which budding occurs was seen to have:
(1) one bud cell
(2) two bud cell
(3) three bud cell
(4) a chain of bud cells
Draw a neat and labelled diagram.
Spore formation
Budding, in hydra, is a form of ______.
Many unicellular organisms reproduce by the process of ______
When you keep food items like bread and fruits outside for a long time, especially during the rainy season, you will observe a cottony growth on them.
What is this growth called?
