CBSE Questions for Class 8 Biology Crop Production And Management Quiz 1 - MCQExams.com

Separation of grain from chaff can also be done by__________________ 
  • Only by threshing
  • Cutting
  • Both A and B
  • Winnowing
Unwanted plants growing along with crop plants are called ________.
  • Herbs
  • Weeds
  • Crops
  • Grass
Plough is used in which of the steps for cultivation of crops?
  • Sowing
  • Preparation of soil
  • Irrigation
  • Harvesting
The modern method of irrigation is/ are___________
  • Sprinkler system
  • Drip system
  • Both A and B
  • None of these
The best time to grow Rabi crops is from ________.
  • October to March
  • June to September
  • May to March
  • December to September
.......... contributes to the fertility of soil.
  • Manure
  • Waste
  • Plants
  • Water
Which of the following are the sources of manure?
  • Animal and human waste
  • Vegetable waste
  • Plant hyacinth waste
  • All of the above
An example of kharif crops grown in India is _____________.
  • Wheat
  • Maize
  • Linseed
  • All of the above
Plants of same kind grown and cultivated at one place on a large scale is known as_______________
  • Crops
  • Seeds
  • Nutrients
  • None of these
Which of the following is a rabi crop?
  • Pea
  • Gram
  • Wheat
  • All of the above
Rabi crops are grown in________.
  • Autumn
  • Summer
  • Winter
  • Spring
An appropriate distance between the ................ is important to avoid overcrowding of plants.
  • Roots
  • Seeds
  • Leaves
  • Flowers
State whether the given statement is True or False:
Cod liver oil is a rich source of vitamin B. 
  • True
  • False
The initial main purpose of ploughing is ____________
  • Turning of soil
  • Scraping of soil
  • Irrigation of soil
  • All of the above
Fresh crop has more__________________
  • Moisture
  • Impurities
  • Weed
  • Stones
Sheep rearing is a branch of ________.
  • Agriculture
  • Animal husbandry
  • Aqua Culture
  • Viticulture
Which of the following is also called unwanted plants?
  • Weeds
  • Shrubs
  • Grasses
  • Feeds
Large scale storage of grains is done in _______________
  • Plastic bags
  • Silos
  • Pouches
  • None of these
Which of the following agricultural tools is required to harvest a crop?
  • Harrow
  • Sickle
  • Seed drill
  • Plough
Good crop management involves _______ before distribution
  • Storage of grains
  • Production of grains
  • Applying coat layer
  • None of these
Cod liver oil is obtained by which of the following animals?
  • Fish
  • Cow
  • Hen
  • Goat
Among the given options, which option is not correct? 

  • Fertilizers and pesticides are completely eco-friendly.

  • Fertilizers and pesticides turn the fields barren after some time.

  • Excessive use of fertilizers and pesticides adversely affects the useful components of the soil.

  • Fertilizers and pesticides used in excess can destroy soil fertility. 

Which of the following tools would a farmer use to remove weeds from the field?
  • Hoe
  • Plough
  • Axe
  • Cultivator
The system of irrigation, where in water is supplied drop by drop near the roots of plants is called as
  • Pulley system
  • Drip system
  • Sprinkler system
  • Lever system
Given below are statements about the harmful effects of weeds on crop plants.
(i) They interfere while harvesting.
(ii) They help crop plants grow healthily.
(iii) They compete with crop plants for water, nutrients, space, and light.
(iv) They affect plant growth.
Choose the correct statements from above.
  • (i), (iii) and (iv)
  • (iii) only
  • (iii) and (iv)
  • (i), (ii), (iii) and (iv)
The process of loosening and turning of soil is called:
  • Irrigation and manuring
  • Digging and winnowing
  • Tilling or ploughing
  • Harvesting and storage
Which of the following food grains forms the most important staple food for mankind?
  • Millets
  • Legumes
  • Cereals
  • Oil seeds
Freshly harvested grains must be dried before storing because:
  • It may contain moisture
  • It may contain insects
  • It may contains active enzymes
  • All of the above
Nitrogen-fixing bacteria are present on root nodules of leguminous plants to fix nitrogen.
  • True
  • False
Which among the following fixes atmospheric nitrogen into the soil?
  • Chlamydomonas reinhardtii
  • Spirogyra 
  • Rhizobium leguminosarum
  • Lactobacillus acidophilus
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