Crop Production and Management — Class 8 MCQs with Answers

Crop Production and Management — important questions & MCQs with answers (Class 8 Science)

14 solved questions from this chapter's difficulty levels, each with its answer and explanation. The other 58 are timed and scored when you sign in.

1. Q1Easy

   Which of the following is a Kharif crop?

   A.Wheat

   B.Paddy✓ Correct

   C.Gram

   D.Mustard

   Answer: B. Paddy

   Explanation: Kharif crops are sown in the rainy season (June–Sept): paddy, maize, soybean, cotton. Wheat, gram and mustard are Rabi (winter) crops.

2. Q2Easy

   The loosening and turning of soil before sowing is called:

   A.Threshing

   B.Levelling

   C.Sowing

   D.Tilling (ploughing)✓ Correct

   Answer: D. Tilling (ploughing)

   Explanation: Tilling or ploughing loosens and turns the soil, allowing roots to penetrate and breathe, and brings nutrient-rich soil to the top.

3. Q3Easy

   Which of these is a natural manure?

   A.Cow dung✓ Correct

   B.NPK

   C.Ammonium sulphate

   D.Urea

   Answer: A. Cow dung

   Explanation: Manure is decomposed organic matter (e.g. cow dung, compost). Urea, NPK and ammonium sulphate are chemical fertilisers.

4. Q4Easy

   Removal of unwanted plants growing along with the crop is called:

   A.Harvesting

   B.Weeding✓ Correct

   C.Sowing

   D.Threshing

   Answer: B. Weeding

   Explanation: Weeds are undesired plants that compete with crops; their removal is weeding.

5. Q5Easy

   Cutting of a crop after it matures is called:

   A.Tilling

   B.Sowing

   C.Harvesting✓ Correct

   D.Irrigation

   Answer: C. Harvesting

   Explanation: Harvesting is the cutting and gathering of the mature crop.

6. Q6Easy

   Supplying water to crops at regular intervals is called:

   A.Manuring

   B.Weeding

   C.Threshing

   D.Irrigation✓ Correct

   Answer: D. Irrigation

   Explanation: Irrigation is the supply of water to crops at suitable intervals.

7. Q7Medium

   Kharif and Rabi crops differ mainly in their:

   A.Colour

   B.Seed shape

   C.Growing season and water requirement✓ Correct

   D.Root type

   Answer: C. Growing season and water requirement

   Explanation: Kharif crops grow in the rainy season; Rabi crops grow in winter — they differ in season and water needs.

8. Q8Medium

   Why is loosening the soil by ploughing important for a crop?

   A.It makes the field look neat

   B.It lets roots breathe and penetrate easily and brings nutrient-rich soil up✓ Correct

   C.It reduces sunlight reaching the soil

   D.It stops irrigation water from entering

   Answer: B. It lets roots breathe and penetrate easily and brings nutrient-rich soil up

   Explanation: Loosened soil holds air for root respiration, lets roots grow deep, and brings nutrient-rich lower soil to the surface.

9. Q9Medium

   Continuous, excessive use of chemical fertilisers over many years tends to:

   A.Reduce soil fertility by harming useful soil microbes✓ Correct

   B.Permanently increase fertility

   C.Increase the number of earthworms

   D.Have no effect on soil

   Answer: A. Reduce soil fertility by harming useful soil microbes

   Explanation: Overuse of chemical fertilisers kills beneficial microorganisms and degrades soil structure, lowering long-term fertility.

10. Q10Medium

    Weeds are harmful to crops mainly because they:

    A.Add nitrogen to the soil

    B.Improve soil texture

    C.Compete with crops for nutrients, water, space and light✓ Correct

    D.Attract pollinating bees

    Answer: C. Compete with crops for nutrients, water, space and light

    Explanation: Weeds compete with crop plants for resources, reducing yield, so they must be removed.

11. Q11Medium

    Storing grains with high moisture content leads to:

    A.Spoilage by microorganisms and pests✓ Correct

    B.A higher market price

    C.Longer storage life

    D.Better taste

    Answer: A. Spoilage by microorganisms and pests

    Explanation: Moisture promotes fungi/microbes and pest activity, spoiling grain — hence grains are dried before storage.

12. Q12Hard

    A farmer sows paddy in June and wheat in November. This is an example of:

    A.Mixed cropping

    B.Inter-cropping

    C.Crop rotation failure

    D.Growing Kharif and Rabi crops in their respective seasons✓ Correct

    Answer: D. Growing Kharif and Rabi crops in their respective seasons

    Explanation: Paddy (Kharif, rainy) and wheat (Rabi, winter) sown in their correct seasons illustrates seasonal cropping.

13. Q13Hard

    Which sequence of agricultural practices is in the correct order?

    A.Ploughing → Sowing → Irrigation → Harvesting → Threshing✓ Correct

    B.Harvesting → Sowing → Threshing → Ploughing

    C.Irrigation → Harvesting → Sowing → Manuring

    D.Sowing → Ploughing → Harvesting → Irrigation

    Answer: A. Ploughing → Sowing → Irrigation → Harvesting → Threshing

    Explanation: The logical order is preparing soil (ploughing), sowing, irrigation/manuring, harvesting, then threshing.

14. Q14Hard

    Assertion (A): Leguminous crops are often grown in rotation with cereals. Reason (R): Their root nodules host Rhizobium which fixes atmospheric nitrogen. Choose the correct option.

    A.A is true, R is false

    B.A is false, R is true

    C.Both A and R are false

    D.Both A and R are true and R correctly explains A✓ Correct

    Answer: D. Both A and R are true and R correctly explains A

    Explanation: Legumes are rotated with cereals precisely because Rhizobium in their nodules restores soil nitrogen — R explains A.

Crop Production and Management — FAQs

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