Fertilisers and Pesticides

Q.

Why was the use of DDT banned?

1. Remains undegraded in the environment

2. it passes from plants to humans when consumed

3. it kills microorganisms that recycle nutrients in the soil

4. Increases the growth of weeds in the farms

Q.

Why are fertilizers added to the soil

Q.

DDT is a

1. Pesticide

2. Fungicide

3. Weedicide

4. Rodenticide

Q.

Guano is a natural fertilizer that was extensively used in the last century. Guano is exceptionally rich in some plant nutrients and is highly sought after by organic farmers today.

Guano is made up of droppings of sea birds such as booby birds, cormorants and gulls. Since they eat sea food, they are essential in bringing nutrients from the sea to the land.

Now that you know what bird droppings are made of, which among the following nutrients is Guano most rich in?

1. Carbon

2. Nitrogen

3. Iron

4. Oxygen

Q.

Bioherbicides have been recommended

1. To prevent eco degradation

2. Because of their ready availability

3. Because of their cheap rates

4. Because of their abundance

Q.

Which of the following are uses of neem?

1. Repels insects

2. Cures skin infections

3. Cures tetanus

4. Cures polio

Q. Rachel Carson's famous book 'silent spring' is related to

1. Pesticide pollution
2. Population explosion
3. Ecosystem management
4. Noise pollution

Q. Which of the following is a plant fungal disease ?

1. Canker
2. Ringworm
3. Death cup
4. Mycoses

Q.

What was the name of the insecticide for Tea Mosquito Bug (TMB)?

1. Diflubenzuron

2. DDT

3. Endosulfan

4. None of these

Q.

In an area where DDT had been used extensively, the population of birds reduced significantly because

1. Birds stopped laying eggs
2. Earthworms in the area got eradicated
3. Many of the birds eggs laid, did not hatch
4. Cobras were feeding exclusively on birds

Q. Which of the following pest control techniques is/are used in IPM?

1. Use of genes from Bacillus thuringiensis to eradicate bollworm
2. All of the above
3. Use of citronella and neem oil as effective pesticides
4. Use of Trichoderma harzianum fungus as a fungicide

Q. Which of the following process aims at suppressing the pests below economic injury level?

1. Integrated pollution prevention and control
2. None of the above
3. British Pest Control Association (BPCA)
4. Integrated pests management

Q.

Why do farmers use fertilizers

Q. State whether true or false:
Endosulfan was used to kill tea mosquito bug in Kerala.

1. True
2. False

Q. In addition to wheat plants, a crop field ecosystem has organisms such as snake, peacock, eagle and mice. If the wheat plants are sprayed with pesticides periodically, which of the following will have the minimum concentration of pesticides in the body?
(a) snake
(b) eagle
(c) mice
(d) peacock

Q.

The case of Amazonian water hyacinth destroying the aquatic ecosystem in Indian freshwaters can be classified as ________.

1. lesser known food plants

2. Medicinal plant species

3. Sacred species of plants

4. Traditional food crops

Q. Regarding the assertion and reason, choose the right option.
Assertion [A]: Green Revolution caused certain toxic effects to the environment.
Reason [R]: High inputs of fertilisers and pesticides are very harmful to the environment.

1. A is true and R is false
2. Both A and R are false
3. Both A and R are true R does not explain A
4. Both A and R are true and R explains A

Q.

Organic fertilizer can be derived from

1. Animal matter

2. Vegetable matter

3. Compounds containing nutrients nitrogen, phosphorous or potassium

4. animal manure

Q. Integrated Pest Management aims at

1. Reduction of ozone depleting substances
2. Biodiversity conservation
3. Control of water pollution
4. Control of CO₂ emission