CBSE Questions for Class 9 Biology Improvement In Food Resources Quiz 4 - MCQExams.com

Paddy and soya beans are
  • Kharif crops
  • Rabi crops
  • Both A and B
  • None of these
Why is hybridisation done?
  • To increase yield
  • To produce plants with better pest resistance
  • To produce plants that can grow in a variety of climates
  • All of the above
Tallness and profuse branching are ideal for
  • Fodder crops
  • Wheat
  • Rice
  • Both B and C
Which of the following is not a desirable feature of a genetically modified plant?
  • Higher yield
  • Shorter maturity duration
  • Suited to grow only in a particular type of climate
  • All of these
Why is dwarfness preferred in cereal crops?
  • They would provide more yield
  • They would consume less minerals
  • They would be resistant to pests
  • All of the above
Some crops are grown in Kharif season, from the month of
  • January to March
  • March to June
  • November to January
  • June to October
What will improve the quantity of food production?
  • Pesticides
  • Synthetic hormones
  • Education and guidance for consumers
  • Optimum use of land for agriculture
  • 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
  • Both Assertion and Reason are incorrect
Which of the following is a common factor for crop improvement?
  • Higher yield
  • Wider adaptability
  • Maturity pattern
  • All of the above
The selection of crops in mixed cropping is in such a way that they support each others growth.
  • True
  • False
  • Ambiguous
  • Data insufficient
________ is grown in mixed cropping.
  • Maize + Black gram
  • Sunflower + Soyabean
  • Sorghum + wheat
  • All of the above

Identify the indigenous breed of poultry of India
  • White leghorn
  • HH-260
  • Aseel
  • B-77
Which of the following statements are correct regarding mixed cropping?

(I) There is a definite pattern of sowing seeds.
(ii) It increases biodiversity.
(iii) It removes some nutrients specifically.
(iv) Outbreaks of pests and diseases can spread very rapidly.
(v) The crops with different maturation times are grown together. 
(vi) Same fertilizers and pesticides are used for all crops.
(vii) The risk of total crop failure due to uncertain monsoon is reduced.    
  • (ii), (v), (vi), (vii)
  • (i), (ii), (v), (vi)
  • (iii), (iv), (v), (vi)
  • (i), (ii), (iv), (vii)
Identify the food source that yields carbohydrates.
  • Black gram
  • Mustard seed
  • Rice
  • All of these

Two different
fields $$X$$ and $$Y$$ were treated with two different substance to increase crop
yield. Amount of humus in their respective fields was observed for a period of
time as shown in the give graph.Select
the incorrect statement regarding substances applied in both fields $$X$$ and $$Y$$.


1111668_9b2925f1e7ca49108a5b83a6406c3c47.png
  • Substance applied in the fields $$X$$ removes general deficiency of soil whereas the one applied in field $$Y$$ provides only specific essential nutrients to the soil
  • Substance applied in field $$X$$ is readily absorbed by the crop plants where as a the applied in field $$Y$$ is absorbed slowly.
  • Substance applied in the fields $$X$$ is cheap and can be prepared in rural homes where as that applied in field $$Y$$ is prepared in factories.
  • Substance applied in the fields $$X$$ does not cause pollution but that applied in field $$Y$$ causes pollution.
Which of the following is not a characteristic of mixed cropping?
  • Minimize risk of crop failure
  • Set pattern of rows
  • Harvesting and threshing crops separately is not possible
  • Individual marketing and consumption of crop is not possible
State whether the given statement is true or False:
The major groups of activities for improving crop yields can be classified as:
• Crop variety improvement
• Crop production improvement
• Crop protection management
  • True
  • False
For solving the problem of food shortage in India, the simple solution is to increase the area of land under agriculture.
Is the above statement true or false?
  • True
  • False
White revolution dealt with increasing the availability of milk production.
Is the above statement true or false?
  • True
  • False
If you are to visit an agricultural field in December, you will not come across which of the following?
  • Wheat
  • Mustard
  • Linseed
  • Paddy
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