Economic Botany

Q. Which of the following chemicals is used for protecting vermi-bed from ants?​

1. DDT
2. Griseofulvin
3. Chloramphenicol
4. Chlorpyriophosphate

Q. The scientist who first demonstrated that plants could be grown to maturity in a defined nutrient solution is

1. J. Sachs
2. John Woodward
3. J.B. Helmont
4. De Saussure

Q.

Which of the following are issues faced by farmers?

1. High cost of crop production

2. Climate change

3. Crop loss

4. All of these

Q.

Which of the following is/are the reason(s) why farmers depend on chemical fertilisers/pesticides?

1. Increase in pests

2. A decline in soil fertility

3. Human health issues

4. Financial factors

Q.

Rearing of silkworms for the production of silk is called:

1. Pisciculture

2. Apiculture

3. Sericulture

4. Cuniculture

Q.

Live-stock management includes the rearing of

1. Goat

2. Cow

3. Sheep

4. All of these

Q.

Some blue-green algae can be used as biofertilizers because they are:

1. Photosynthetic

2. Surrounded by mucilage

3. Growing everywhere

4. Can fix atmospheric nitrogen

Q. Which of the following is a method of sustainable agriculture?

1. Biogas production
2. Recycling of crop waste
3. Use of chemical fertilizers
4. Use of pesticides to destroy pests

Q.

Which of these is a macronutrient used by plants?

1. Nitrogen

2. Zinc

3. Copper

4. Chlorine

Q.

Agriculture by using only biofertilizers is called:

1. Manuring

2. Composting

3. Inorganic farming

4. Organic farming