Diseases of crops - SS2 Agriculture Past Questions & Answers - page 1

1

What is the primary symptom of smut disease in cereals?

A

Black, powdery spore masses

B

Irregularly shaped lesions

C

Reddish-brown pustules

D

Yellowing of leaves

CORRECT OPTION: a
2

Which crop is most susceptible to rice blast disease?

A

Wheat

B

Rice

C

Corn

D

Barley

CORRECT OPTION: b
3

How does leaf rust disease manifest in cereals?

A

Circular dark spots on leaves

B

Reddish-brown pustules on leaves

C

Yellowing and curling of leaves

D

Powdery white growth on stems

CORRECT OPTION: b
4

Cercosporal leaf spot is a common disease in which group of crops?

A

Legumes

B

Fruits

C

Fruits

D

Grains

CORRECT OPTION: a
5

What is the main vector responsible for transmitting rosette disease in peanuts?

A

Bees

B

Aphids

C

Butterflies

D

Ants

CORRECT OPTION: b
6

Which practice helps manage smut disease in cereals?

A

Crop rotation

B

Using fungicides

C

Planting under shade

D

Pruning affected leaves

CORRECT OPTION: b
7

How does rice blast affect grain yield?

A

Causes circular spots on grains

B

Reduces photosynthesis

C

Causes yellowing of stems

D

None of the above

CORRECT OPTION: b
8

Which legume is particularly susceptible to cercosporal leaf spot?

A

Chickpeas

B

Lentils

C

Green beans

D

Mung beans

CORRECT OPTION: a
9

What is the primary mode of transmission for smut disease?

A

Wind

B

Water

C

Insects

D

Soil

CORRECT OPTION: c
10

Which preventive measure is effective against rosette disease in peanuts?

A

Using fungicides

B

Controlling aphid vectors

C

Crop rotation

D

Pruning affected leaves

CORRECT OPTION: b
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