NCERT Class VIII Science Solutions: Chapter 1-Crop Production and Management Part 1 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question 1:

Which one of the following condition is not essential to grow maize?

  1. High temperature
  2. Humidity
  3. Low temperature
  4. Rainfall

Answer: C

Question 2:

Propagation of ginger is generally done using

  1. Seed
  2. Stem (rhizome)
  3. Root
  4. Leaf

Answer: B

Question 3:

Which of the following statement is not true for organic manure?

  1. It enhances water holding capacity of soil.
  2. It has a balance of all plant nutrients.
  3. It provides humus to soil.
  4. It improves texture of soil.

Answer: B

Organic Manure

Question 4:

The term used for the process of separation of grains from chaff is

  1. Sieving
  2. Threshing
  3. Winnowing
  4. Hand picking

Answer: C


Question 5:

Read the statements given below.

  1. Seeds require moisture for germination.
  2. Plants can absorb nutrients mostly in dissolved form.
  3. Irrigation protects crops from both frost and hot air currents.
  4. Irrigation improves soil texture.

Choose the combination of statements which indicate the need to irrigate crops.

  1. (i) and (ii)
  2. (i) , (ii) , (iii)
  3. (i) , (ii) , (iii) , (iv)
  4. (i) and (iii)

Answer: A

Question 6:

Which of the following tools would a farmer use to remove weeds from the field?

  1. Hoe
  2. Plough
  3. Axe
  4. Cultivator

Answer: A

Question 7:

Which of the following is not true for fertilisers?

  1. They increase the yield.
  2. Their excessive use disturbs the balance of nutrients in soil.
  3. They are generally used in small quantity.
  4. They are environment friendly.

Answer: D