Control of Pests

Q.

Which factors affect crop production?

Q.

What is bt toxin?

Q.

Which one of the following is commonly used in the transfer of foreign DNA into crop plants?

1. Trichoderma harzianum

2. Penicillium expansum

3. Agrobacterium tumefaciens

4. Meloidogyne incognita

Q.

What are the components of integrated pest management?

Q.

NPK is an example of

1. Weedicide

2. Manure

3. Fertilizer

4. Insecticide

Q.

IPM (Integrated Pest Management) involves

1. biological control

2. pesticides

3. confusion technique

4. biofertilizers

Q.

Which bacteria was first used as a biopesticide commercially?

1. Escherichia coli

2. Bacillus thuringiensis

3. Agrobacterium tumefaciens

4. Pseudomonas aeruginosa

Q.

Which of the following best describes the principle of integrated pest management?

1. Killing all pests along with weeds

2. Destruction of all pests

3. Decreasing the multiplication of pests

4. Increasing the multiplication of pests

Q.

Which of the following is not an eco-friendly method of controlling pests?

1. Use of ultrasonic sound waves.

2. Use of pheromone traps.

3. Use of microbial pesticides.

4. Use of chemical pesticides.

Q. List three conditions required for the growth of bacteria.

Q.

Why has the Bt toxin gene been cloned?

Q. ___ is not a natural insecticide.

1. Pyrethrum
2. Nicotine
3. Neem
4. Pyrethroids

Q.

Which method is most effective for destroying insects in the storage of food grains, spraying or fumigation?

Q.

Which of the following organisms produce pheromones?

1. Insects

2. Birds

3. Reptiles

4. Fishes

Q.

Which of the following insects is not considered a pest?

1. Locust

2. Butterfly

3. Caterpillar

4. Grasshopper

Q.

Name two fumigants used in food storage godowns.

Q. What is Integrated Pest Management?

Q.

Opuntia weed can be eradicated by

1. Gambusia

2. Cochineal insect

3. Grass carp

4. Both A and B

Q.

Fill in the blank with a suitable term:

Plant diseases whose pathogen survives in the soil are called ____________.

Q.

how would you protect crops from pests and diseases?

Q.

Cockroaches Breed in _________.

Q. Why should preventive measures and biological control methods be preferred for protecting crops?

Q.

The unwanted crop that grow along with the cultivated crops are called:

1. Pests

2. Weeds

3. Cash crops

4. None of these

Q. Biology
crop production and management
Question: what are pheromones?
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Q. Name a biopesticide obtained from Neem(Azadirachta indica)

Q.

Artificial substances that are similar to the chemical nature of pheromones are used to trap insects.

1. True

2. False

Q.

Which of the folloing is correct about pheromone traps?

1. They destroy the reproductive capacity of the insects by using radiations.

2. Pheromones can lure insects into insect traps.

3. They destroy the reproductive capacity using ultrasonic sound waves.

4. The traps use natural predators to kill the pests.

Q.

Match the items of column A with those in column B.

Column 1	Column 2
Phosphorus	Earthworm
Boron	Weed
Vermicompost	Macronutrient
Green manure	Micronutrient
Pathenium	Sunhemp

Q. Full form of IPM is

1. Indian petroleum management
2. None of the above
3. Integrated pest management
4. Integrated programme for malnutrition

Q.

Which of the following is NOT a reason to discourage the use of chemical pest control measures?

1. Kills all the beneficial insects

2. Pollutes groundwater

3. Kills pests completely

4. Kills most of the crop