Identify the option where all columns are not correctly matched:
Crop Variety Resistant to
1. Wheat Himgiri Leaf rust
2. Brassica Pusa Swarnim White rust
3. Cowpea Pusa komal Black rot
4. Chilli Pusa sadabahar Leaf curl
In mung bean the resistance to yellow mosaic virus and powdery mildew were introduced by:
1. Mutations
2. Hybridization
3. Tissue culture
4. Genetic engineering
Pusa Shubhra, an improved variety of cauliflower, is resistant to:
1. White rust
2. Bacterial blight
3. Black rot
4. Leaf curl
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
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
Identify the incorrectly matched pair:
|
Crop Variety |
Resistant to |
1. |
Himgiri |
Leaf and stripe rust |
2. |
Karan rai |
White rust |
3. |
Pusa sadabahar |
Bacterial blight |
4. |
Pusa shubhra |
Black rot |
Meristem culture is especially important to obtain:
1. Drought resistant plants
2. Virus free plants
3. Biofortified plants
4. Androgenic haploids
Consider the following statements:
I: | Hairy leaves are associated with resistance to jassids in cotton and cereal leaf beetle in wheat. |
II: | Low aspartic acid, high nitrogen, and sugar content in maize leads to resistance to maize stem borers. |
III. | In wheat, solid stems lead to non-preference by the stem sawfly and smooth-leaved and nectar-less varieties of cotton do not attract bollworms. |
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
Match each item in Column I with one item in Column II and chose your answer from the codes given below:
Column I |
Column II |
I. Pusa Swarnim II. Pusa Shubhra III. Pusa Komal IV. Pusa Sawani |
1. Cauliflower 2. Brassica 3. Okra 4. Cow pea |
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