Class 8 Crop Production And Management CBSE Questions & Answers

Class 8 · Crop Production And Management

This is Science Class 8 Crop Production and Management CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Formation of vermicompost manure involves addition of :
  • A
    mycorrhiza
  • B
    earthworms
    Correct
  • C
    leeches
  • D
    bacteria
2
Organic farming will not include :
  • A
    use of bio fertiliser
  • B
    application of bio pesticides
  • C
    application of chemical pesticides
    Correct
  • D
    use of manure
3
Blight of potato can be controlled by the use of :
  • A
    insecticide
  • B
    fungicide
    Correct
  • C
    weedicide
  • D
    herbicide
4
The freshly harvested grains promote fungal growth because :
  • A
    they are in contact with ground
  • B
    they have stored microbial spores
  • C
    they have moisture
    Correct
  • D
    they contain no pesticides
5
Continuous circulation of _____ through granaries keeps stored grains free of pests.
  • A
    oxygen
  • B
    chlorine
  • C
    nitrogen
    Correct
  • D
    hydrogen
6
The crop field is irrigated before sowing because :
  • A
    watering increases content of soil air for seed germination
  • B
    different irrigation systems prevent weed growth
  • C
    irrigation works as bio fertiliser for seed germination
  • D
    moisture is necessary for seed germination
    Correct
7
The type of crop shown in the following image is:
Question 7 figure 1
  • A
    sugar crop
  • B
    cereals
  • C
    spices
  • D
    beverage crop
    Correct
8
Rabi crop can be also named as :
  • A
    rainy season crop
  • B
    autumn crop
  • C
    summer crop
  • D
    winter crop
    Correct
9
Read the following statements:i. Cereals are shrubs.ii. Cereals are grown for their nutritious seeds.
  • A
    Statement i) is wrong and ii) is correct
    Correct
  • B
    both are wrong
  • C
    both are correct
  • D
    Statement ii) is wrong and i) is correct
10
Loosening of soil helps to :
  • A
    None of these
  • B
    mix fertilisers more uniformly
    Correct
  • C
    settle nutrient at lower layers of soil
  • D
    trap more free nitrogen for plant growth
11
Any plant cultivated at a large stretch of land is called:
  • A
    fibre
  • B
    cereal
  • C
    crop
    Correct
  • D
    weed
12
Pest become resistant to poisonous chemicals :
  • A
    if pesticides are sprayed in appropriate doses
  • B
    if pesticides are sprayed at correct time
  • C
    if pesticides are sprayed by an aircraft
  • D
    if pesticides are sprayed in very high doses
    Correct
13
Harvesting of crop may lead to :
  • A
    radioactive pollution
  • B
    solid waste pollution
  • C
    noise pollution
  • D
    air pollution
    Correct
14
Hybridization is a technique used to develop :
  • A
    improved crop produce by fertilizers
  • B
    new crop variety by cross breeding
    Correct
  • C
    non harmful weeds
  • D
    all the above
15
Fill in the blanks : watering of fields : irrigation :: nurseries : _____
  • A
    seed beds
    Correct
  • B
    seedlings
  • C
    saplings
  • D
    transplantation