Meristem culture is especially important to obtain: 

1. Drought resistant plants

2. Virus free plants

3. Biofortified plants

4. Androgenic haploids

Match each item in Column I with one item in Column II and chose your answer from the codes given below:

Codes

            I           II         III         IV

1.         1           2           3           4

2.         2           1           4           3

3.         2           1           3           4

4.         1           2           4           3

Identify the incorrectly matched pair:

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

Inbreeding depression in animals can be overcome by:

1. A single outcross

2. Out cross for many generations

3. Cross-breeding

4. Inter-specific hybridization

Pusa Shubhra, an improved variety of cauliflower, is resistant to:

1. White rust

2. Bacterial blight

3. Black rot

4. Leaf curl

Consider the following statements:
 

Which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I, II and III

Which one is the wrong pairing for the disease and its causal organism?

(1) late blight of potato-Alternaria solani

(2) Black rust of wheat-Puccinia graminis

(3) Loose smut of wheat-Ustilago nuda

(4) Root-knot of vegetables-Meloidogyne sp.

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