CBSE Questions for Class 8 Biology Crop Production And Management Quiz 2 - MCQExams.com

Which of the following crops cannot be grown between October and March?
  • Paddy
  • Maize
  • Wheat
  • Cotton
Identify the branch of biology based on the information given in the box.
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  • Biosphere reserve
  • Animal husbandry
  • Sanctuary
  • National park
Which of the following methods of cultivation makes soil fertile?
  • Excessive use of chemical fertilizers
  • Extensive cultivation
  • Crop rotation
  • Monocropping
Which of the following agricultural implements is used to separate grain seeds from the chaff?
  • Plough
  • Hoe
  • Sickle
  • Combine
Which of the following processes helps to remove the chaff from the grains?
  • Weeding
  • Threshing
  • Harvesting
  • Winnowing
In _________ system of irrigation, water is delivered at or near the roots of the plant drop by drop. 
  • drip irrigation
  • surface irrigation
  • manual irrigation
  • sprinkler irrigation
.......... is the first step to be followed before growing a crop.
  • Preparation of soil
  • Harvesting
  • Weeding
  • Adding manures and fertilizers
A high concentration of synthetic auxins is generally used for
  • Weed control
  • Enhancing root initiation
  • Controlling of cell enlargement
  • Preventing the growth of the lateral buds.
_________ are like artificial rainmakers.
  • Sprinklers
  • Cloud seeding
  • Drought-Ridden
  • Ice-nuclei seeding
Fertility of soil is increased by
  • Nitrogen-fixing bacteria
  • Denitrifying bacteria
  • Methanogens
  • All of the above
  • Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
  • Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
  • Assertion is correct but Reason is incorrect
  • Assertion is incorrect but Reason is correct
The highest cultivated crop in India is:
  • Wheat
  • Maize
  • Rice
  • Banana
Name two chemical fertilizers?
  • Urea, ammonium sulphate
  • Manure, humus
  • Green manure, urea
  • Urea, humus
The last step in crop production is
  • Soil preparation
  • Crop harvesting
  • Irrigation
  • Sowing
What are the yield products of the dairy industry?
  • Milk
  • Petrol
  • wine
  • Iron
The process of putting seeds in the soil for germination is known as:
  • Sowing
  • Manuring
  • Weeding
  • Tilling
Name the process in which grains are separated from chaff and hay with the help of wind.
  • Winnowing
  • Milling
  • Processing
  • Harvesting
Threshing is the process of:
  • Separating chaff from the grain
  • Cutting of mature crop
  • Sowing seeds by hands
  • Turning and loosening of soil
.......... is a process to loosen soil. 
  • Tilling
  • Wilting
  • Manuring
  • Drilling
Animal husbandry is the scientific management of _____.
  • animals livestock
  • endangered species
  • diary animals
  • agriculture
Which of the following is an example of Kharif crop?
  • Rice
  • Wheat
  • Gram
  • Mustard
Define irrigation.
  • Irrigation is watering the land to make it ready for harvesting.
  • Irrigation is digging the land to make it ready for agriculture.
  • Irrigation is watering the land to make it ready for agriculture.
  • Irrigation is providing water for home needs.
.......... is the artificial application of water to the land or soil:
  • Ploughing
  • Irrigation
  • Rainwater farming
  • Tilling
Crops which are grown in rainy seasons are
  • Kharif crops
  • Rabi crops
  • Seasonal crops
  • Annual crops
In a classroom discussion, three students made the following statements.

Shikha: Fertilizers are chemical substances that are rich in a particular nutrient.
Ritesh: Fertilizers increase the water holding capacity of the soil.
Abhishek: Fertilizers used in excess provide lots of humus to the soil.

Which student(s) made incorrect statement(s)?
  • Shikha and Ritesh
  • Ritesh and Abhishek
  • Abhishek and Shikha
  • Shikha only
Which among the following tools saves labour and time?
  • Hoe
  • Cultivator
  • Plough
  • All of the above
The word 'Rabi' in Arabic means __________.
  • Autumn
  • Summer
  • Spring
  • Rain
Name the tool used for scraping the soil.
  • Hoe
  • Plough
  • Cultivator
  • Both A and B
Winnowing is_________.
  • Cutting a crop
  • To separate straw from threshed lank
  • To thresh
  • Cutting the fodder
Separation of good seeds from bad seeds can be done by__________
  • Boiling in water
  • Sieving
  • Winnowing
  • Immersing in water
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