PusaSem 2, a variety of flat bean, is resistant to all the following pests except:
1. | Aphids | 2. | Jassids |
3. | Fruit borer | 4. | Bollworm |
In virus-infected plants, the meristematic tissues in both apical and axillary buds are free of the virus because:
1. | the dividing cells are virus resistant. |
2. | meristems have anti-viral compounds. |
3. | the cell division of meristems is faster than the rate of viral multiplication. |
4. | Viruses cannot multiply within meristem cell(s). |
Which one of the following is not a fungal disease?
1. | Rust of wheat | 2. | Smut of Bajra |
3. | Black rot of crucifers | 4. | Red rot of sugarcane |
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
Identify the incorrectly matched row:
Crop |
Variety |
Resistant to |
|
1. |
Cauliflower |
Pusa Snowball K1 |
Black rot and Curl blight black rot |
2. |
Chilli |
Pusa Sadabahar |
Mosaic virus and Leaf curl |
3. |
Flat bean |
Pusa Gaurav |
Jassids |
4. |
Okra |
Pusa sawani |
Shoot and fruit borer |