Consider the following four measures (A.D) that could be taken to successfully grow chickpeas in an area where bacterial blight disease is common:
(A)
spray with Bordeaux mixture
(B)
control of the insect vector of the disease pathogen
(C)
use of only disease-free seeds
(D)
use of varieties resistant to the disease
Which two of the above measures can control the disease?
1. B and C
2. A and B
3. C and D
4. A and D
Consider the following four measures (A.D) that could be taken to successfully grow chickpeas in an area where bacterial blight disease is common:
| (A) | spray with Bordeaux mixture |
| (B) | control of the insect vector of the disease pathogen |
| (C) | use of only disease-free seeds |
| (D) | use of varieties resistant to the disease |
Which two of the above measures can control the disease?
1. B and C
2. A and B
3. C and D
4. A and D
1. lignified thick walls
2. cohesion and adhesion
3. weak gravitational pull
4. transpiration pull
1. parathormone
2. thyroxine
3. calcitonin
4. Both 1 and 3
| 1. | grasslands | 2. | agro-ecosystems |
| 3. | oceans | 4. | forests |
1. Dryopteris
2. Salvinia
3. Adiantum
4. Equisetum
1. caryopsis
2. cypsela
3. berry
4. cremocarp
1. Chorion
2. Allantois
3. Yolk sac
4. Amnion
1. achenes
2. samaras
3. berries
4. mericarps
1. Bacterial leaf blight of rice
2. Downy mildew of grapes
3. Loose smut of wheat
4. Black rust of wheat
1. autogamy, but not geitonogamy
2. Both geitonogamy and xenogamy
3. geitonogamy, but not xenogamy
4. autogamy and geitonogamy
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