The best plant explant to raise virus free plant is:
(1) embryo
(2) vessels
(3) meristem
(4) Leaf
To obtain a virus free plant, what can be used as an explant in micropropogation ?
1. Apical meristem
2. Axillary meristem
3. Either apical or axillary meristem
4. Embryo
In plants, somatic embryo regeneration is induced usually by a relatively high concentration of:
(1) Benzyl amino purine
(2) IAA
(3) 2,4 - D
(4) NAA
Meristem culture is especially important to obtain:
1. Drought resistant plants
2. Virus free plants
3. Biofortified plants
4. Androgenic haploids
A technique of micropropagation is
1. Somatic hybridisation
2. Somatic embryogenesis
3. Protoplast fusion
4. Embryo rescue
Which of the following enhances or induces fusion of protoplasts?
1. Sodium chloride and potassium chloride
2. Polyethylene glycol and sodium nitrate
3. IAA and kinetin
4. IAA and gibberellins
In vitro clonal propogation in plants characterised by
1. PCR and RAPD
2. Northen blotting
3. Electrophoresis and HPLC
4. Microscopy
To obtain virus-free healthy plants from a diseased one by tissue culture technique, which
part/parts of the diseased plant will be taken?
1. Apical meristem only
2. Palisade parenchyma
3. Both apical and axillary meristems
4. Epidermis only
Which part would be most suitable for raising virus-free plants for micropropagation?
1. | Bark | 2. | Vascular tissue |
3. | Meristem | 4. | Node |
Somaclones are obtained by
1. tissue culture
2. plant breeding
3. irradiation
4. genetic engineering