Multiplication Stage

Q.

What is tissue culture?

Q. Arrange the given steps of the tissue culture process in the correct order.
I. Sterilisation of culture media and explant
II. Transfer of explants to culture medium
III. Selection of explant
IV. Organogenesis in callus and formation of plantlets
V. Establishment of plantlets in the field

1. II→III→I→V→IV
2. III→I→II→IV→V
3. V→IV→III→II→I
4. II→I→III→IV→V

Q. Define determinate growth.

Q. The stage in which a Single explant is increased to from one to hundreds and thousands is called

1. Introduction of explants
2. Mutliplication
3. Hardening
4. None of the above

Q. Where would you look for active cell division in plants?

1. In the pith cells
2. In the cells of cortex
3. In the internodal region
4. At the tip of root and shoot

Q. The inherent capacity of a cell to regenerate a new whole organism is called as

1. Ontogeny
2. Totipotency
3. Phycogeny
4. Differentiation

Q. Using tissue culture, many plants can be grown from single parent in disease-free condition.

1. True
2. False

Q. The stage in which a Single explant is increased to from one to hundreds and thousands is called

1. Hardening
2. Mutliplication
3. Introduction of explants
4. None of the above

Q. The technique of obtaining large number of plantlets by tissue culture method is called:

1. Organ culture
2. Micro propagation
3. Macro propagation
4. Plantlet culture

Q. The technique of obtaining large number of plantlets by tissue culture method is called:

1. Organ culture
2. Micro propagation
3. Macro propagation
4. Plantlet culture

Q. The technique of obtaining large number of plantlets by tissue culture method is called:

1. Micro propagation
2. Macro propagation
3. Plantlet culture
4. Organ culture

Q.

A scientist remove some cells from the growing point of a plant and placed it in a suitable medium leading to the formation of a shapeless lump of mass X. X is then transferred to another medium which stimulates it to develop roots. When X with developed roots is placed in a yet another medium, then it develops shoots to form tiny plantlets. These plantlets can then be transplanted in pots or soil where they can grow to form mature plants.

(f) State any two advantages of this method of producing plants

Q. Would you be able to grow an entire potato plant from one of the 'eyes'? If so, which tissue is responsible for this?

1. Meristematic tissue
2. Parenchyma tissue
3. Collenchyma tissue
4. Sclerenchyma

Q. The stage in which a Single explant is increased to from one to hundreds and thousands is called

1. Hardening
2. Mutliplication
3. Introduction of explants
4. None of the above

Q. The technique of obtaining large number of plantlets by tissue culture method is called

1. Plantlet culture
2. Organ culture
3. Micropropagation
4. All of these