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

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

'Himgiri' developed by hybridisation and selection for disease resistance against rust pathogens is a variety of

1. maize

2. sugarcane

3. wheat

4. chilli

Identify the correct matches for crops and their improved varieties

     Crops                  Varieties                      Disease

(1) Wheat                Karan rai                    White rust

(2) Cauliflower        Pusa Shubhna              Leaf and stripe rust

(3) Cowpea              Pusa Koma                 Hill bunt

(4) Chill                Pusa Sadabahar            Tobacco mosaic virus and leaf curl

Which of the following is not correct?

1. A wide range of fungal, bacterial, and viral pathogens affect the yield of cultivated crop species, especially in tropical climates.

2. Crop losses can often be significant, up to 20-30% or even 100%.

3. Hybrid breeding has led to the development of several high yielding varieties resistant to water stress.

4. The disease-resistant varieties increase our dependence on the use of fungicides and bacteriocides.

Which of the following is not a bacterial disease?

1) Brown rust of wheat

2) Red rot of sugarcane

3) Late blight of potato

4) All of these

Which of the following is not a fungal disease?

1. black rot of crucifers

2. Brown rust of wheat

3. Red rot of sugarcane

4. late blight of potato

Which of the following is a bacterial disease?

1. Tobacco Mosaic

2. Turnip Mosaic

3. black rot of crucifers

4. red rot of sugarcane