Q. No.The method of producing thousand of plantlets through culture is called:
1. Micropropagation
2. Clonal selection
3. Hardening
4. Acclimatization
It is possible to raise a large number of plantlets through micro-propagation because of the presence of which of the following properties in plants?
1. Cellular totipotency
2. Phenotypic plasticity
3. Closed development
4. Determined growth
Totipotency refers to
| 1. | capacity to generate genetically identical plants. |
| 2. | capacity to generate a whole plant from any plant cell / explant. |
| 3. | capacity to generate hybrid protoplasts. |
| 4. | recovery of healthy plants from diseased plants. |
Genetically identical plants produced by micropropagation are called
1. Explants
2. Somaclones
3. Somatic hybrids
4. Cybrids
Match List - I with List - II
| List - I | List - II |
| (a) Protoplast fusion | (i) Totipotency |
| (b) Plant tissue culture | (ii) Pomato |
| (c) Meristem culture | (iii) Somaclones |
| (d) Micropropagation | (iv) Virus free plants |
Choose the correct answer from the options given below.
(a) (b) (c) (d)
1. (iii) (iv) (i) (ii)
2. (iv) (iii) (ii) (i)
3. (iii) (iv) (ii) (i)
4. (ii) (i) (iv) (iii)
A protoplast is
| 1. | Storage organelle of plant cell |
| 2. | A cell without cell wall |
| 3. | Primitive form of plastids |
| 4. | A cell without nucleus |
1. Auxins and Cytokinins
2. Auxins and Gibberellins
3. ABA and Ethylene
4. Ethylene and Auxins
| Assertion (A): | Apical bud and axillary bud are most suitable explants to produce virus free plants. |
| Reason (R): | Meristems have rapid rate of cell division and are free from viruses. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
| Statement I: | The genetic constitution of a plant is unaffected in vegetative propagation |
| Statement II: | Totipotency of cells enables us to micropropagate plants |
In light of the above statements, choose the most appropriate answer from the options given below.
| 1. | Both statement I and statement II are true |
| 2. | Both statement I and statement II are false |
| 3. | Statement I is correct but statement II is false |
| 4. | Statement I is incorrect but statement II is true |
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