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Improvement in Food Resources CBSE Class 9

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Question 1/20

Q 1. Which of the following is not a marine fish?

Solution

Catla is a freshwater fish. 

Q 2. Preventive and control measures adopted for the storage of grains include

Solution

Preventive and control measures adopted for the storage of grains include strict cleaning, disjoining and fumigation. 

Q 3. Crops grow well when they are

Solution

Water for irrigation is essential for vegetable production in which the crops grow properly. 

Q 4. The disease which is caused by a virus is

Solution

Rabies infection is caused by the rabies virus. The virus is spread through the saliva of infected animals. 

Q 5. Vermicompost is produced by the action of

Solution

Vermicompost is produced by the action of earthworm. 

Q 6. Which of the following is not included in organic farming?

Solution

Organic farming uses natural techniques which prevent soil depletion and destruction and do not use chemical fertilisers. 

Q 7. Poultry fowl are susceptible to which of the following pathogens?

Solution

Microorganisms like virus, bacteria and fungi cause various diseases in poultry fowl. 

Q 8. Other than dug wells and tube wells, which is the other one?

Solution

Driven wells are constructed by driving a small-diameter pipe into shallow water-bearing sand or gravel. 

Q 9. Which of the following is not correct for mixed cropping?

Solution

Pattern of rows is set in mixed cropping. 

Q 10. Man-made fertilisers which are produced from chemicals are called

Solution

Man-made fertilisers which are produced from chemicals are called inorganic fertilisers. 

Q 11. Growing of a single crop species on a field year after year is called

Solution

The growing of a single crop species on a field year after year is called continuous cropping. 

Q 12. Rohu and catla are types of

Solution

Catla and rohuare one of the popular freshwater fish. 

Q 13. Which of the following systems is used for irrigational purposes in India?

Solution

Canal, river lift and tank systems are some systems used for irrigational purposes in India. 

Q 14. A breed of cow not used for cross breeding in our country is

Solution

A breed of cow not used for cross breeding in our country is Sahiwal.

Q 15. Growing of two or more crops simultaneously on the same piece of land is called

Solution

Growing of two or more crops simultaneously on the same piece of land is called mixed cropping. 

Q 16. Murrah, Surti and Mehsana are different breeds of

Solution

Murrah, Surti and Mehsana are different breeds of buffalo. 

Q 17. To solve the food problem of the country, which among the following is necessary?

Solution

To solve the food problem of the country, increased production and storage of food grains, access to food grains and the availability of money to purchase the grains should be an advantage. 

Q 18. Insecticides usually attack the

Solution

Insecticides are usually hazardous and attack the respiratory system. 

Q 19. Which is true for DDT?

Solution

The pollutants which cannot be degraded into less harmful substances by any natural method or degrade slowly are called non-degradable pollutants. Examples: Mercury salt, DDT 

Q 20. Pesticides which are used for controlling weeds are called

Solution

Herbicides are pesticides which are used for controlling weeds. 

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