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प्रश्न
Write a short note on Micro propagation.
उत्तर
Micro propagation: This is the propagation of plants involving cell and tissue culture. If vegetative propagation is not possible in a crop, then buds, shoot apex or any other part of the plant can be used as explant for micropropagation.
- The explants are treated with sterilisation chemicals to prevent microbial growth, and then cultured in a particular nutrient medium.
- Cells grow and divide to form a cell mass called callus Some growth regulators (Plant hormones) are added.
- The callus differentiates into plant parts looking like plant (plantlet). After 4-6 weeks the plantlets transferred to the soil
APPEARS IN
संबंधित प्रश्न
Write two differences between binary fission and multiple fission in a tabular form.
Name three common methods which are used for the artificial propagation of plants.
A worm X found in freshwater and slow-moving streams has been accidently cut into three pieces. It was observed that in due course of time, each cut piece of the worm develops to become a complete worm by growing all the missing parts.
(a) Name the worm X which can exhibit this phenomenon of making complete worm from its cut body parts.
(b) Name another organism Y which possesses the same characteristic of growing fully from its cut body parts.
(c) What is the name of this process in which a complete organism is formed from its cut body part.
(d) State whether X and Y are unicellular and/or multicellular organisms.
(e) Can a dog be produced completely form its cut body part (say, a cut tail) just like organisms X and Y? Why?
Fill in the blank:
Budding produces cells of __________ size.
From the following diagrams, select the correct ones showing stages of binary fission in Amoeba:
(A) I, II, III
(B) IV, II, III
(C) V, II, III
(D) IV, I, III
List two observations on the basis of which it may be concluded that the given slide shows binary fission in Amoeba.
How is plant hybridisation as a technique beneficial?
The asexual reproduction in bacteria occurs by ______.
In Spirogyra, asexual reproduction takes place by ______
Explain with the help of a labelled diagram, the process of reproduction in Hydra by budding. Name the cells used for reproduction in this process.
