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Class 8

Explore popular questions from Crop Production and Management for Class 8. This collection covers Crop Production and Management previous year Class 8 questions hand picked by experienced teachers.

Crop Production and Management

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Q 1. Horticulture deals with

A

Production of crops

B

Breeding of animals

C

Study of soil

Production of fruits and vegetables

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Q 2. Which one of the following is not true about ploughing –

A

Loosens the soil

B

Aerates the soil

Makes the soil hard

D

Allows easy penetration of roots into the soil

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Q 3. Separating the grain from chaff is called –

Winnowing

B

Hybridisation

C

Threshing

D

Harvesting

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Q 4. Organic substances obtained from the decomposition of dead plants and animals wastes are called –

A

Fertiliser

B

NPK

C

Herbicide

Manure

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Q 5. Biological methods of pest control involve –

A

Spraying chemicals to kill plants

Killing pests by using other organisms

C

Spraying DDT

D

Weeding

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Q 6. Which one of the following is not a method to maintain the fertility of soil

A

Crop rotation

B

Multiple cropping

C

Fallow method

Ploughing

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Q 7. Which of the following machines would you use to harvest a crop as well as to beat out the grains from the chaff?

A

Mechanical harvester

Combine

C

Thresher

D

Harrow

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Q 8. Transplantation is –

A

Process of scattering the seed

B

Process of loosening and turning of soil

Process of shifting of tiny saplings from the nursery to a field

D

None of these

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Q 9. Chemical substances which are used to kill insects –

A

Fungicide

Insecticide

C

Weedicide

D

All of these

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Q 10. Process of cutting of crop after its maturation –

A

Threshing

Harvesting

C

Winnowing

D

None of these

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Q 11. Which of the following is not a method of irrigation?

A

Drip irrigation

B

Sprinkler

Nursery

D

Canals

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Q 12. The unwanted wild plants growing along with the crop plants are called –

A

Seedlings

Weeds

C

Minor crops

D

Grasses

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Q 13. The science of improving crop varieties is called –

Plant breedling

B

Hybridization

C

Selection

D

Introduction

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Q 14. Which one of the following cause(s) plant diseases?

A

Viruses

B

Bacteria

C

Fungi

All of these

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Q 15. The big pieces of soil in the ploughed field are called

Crumbs

B

Flakes

C

Lumps

D

All of these

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Q 16. Rearing and breeding of fish in pond and tank is called –

A

Aquaculture

B

Fishing

Pisciculture

D

Apiculture

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Q 17. Broilers are maintained for getting –

A

Milk

B

Egg

Meat

D

Leather

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Q 18. Males of honey bee colony are called –

Drone

B

Workers

C

Soldiers

D

All of these

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Q 19. Cattle feed should contain –

A

Roughage

B

Concentrate

Both

D

None of these

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Q 20. Which of the following should come in the box 'X' in the given sequence ?
Ploughing → Levelling → manuring → Sowing seeds → X

A

Broadcasting

B

Transplanting

Irrigation

D

Drilling

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Q 21. Which of the following crops would enrich the soil with nitrogen ?

A

Apple

B

Pea

C

Paddy

Potato

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Q 22. Eutrophication means :

toxication of water by fertilisers

B

decrease the growth of algae

C

increase in the fertility of the soil

D

all of the above

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Q 23. Besides carbon, hydrogen and oxygen, the synthesis of proteins by plants require :-
I. Magnesium II. Nitrogen III. Potassium

A

I only

B

III only

II only

D

II and III only

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Q 24. Nitrogen-fixing bacteria can be found in :
I. soil
II. root nodules
III. leaves

A

I only

I and II only

C

II and III only

D

I, II and III

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Q 25. Which of the following crops seedlings need to be transplanted ?

A

Wheat

B

Potato

C

Mustard

Rice