Weeds affect the crop plants by

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Important Questions on Improvements in Food Resources

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9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>Multiple Choice Questions>Q 6

Find out the correct sentence

(i) Hybridization means crossing between genetically dissimilar plants.
(ii) Cross between two varieties is called as inter-specific hybridization.
(iii) Introducing genes of desired characters into a plant gives genetically modified crop.
(iv) Cross between plants of two species is called as inter varietal hybridization.

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9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>Multiple Choice Questions>Q 7

Which one of the following species of the honey bee is an Italian species?

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9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>Multiple Choice Questions>Q 8

Find out the correct sentence about manure
(i) manure contains large quantities of organic matter and small quantities of nutrients.
(ii) it increases the water holding capacity of sandy soil.
(iii) it helps in draining’ out of an excess of water from clayey soil.
(iv) its excessive use pollutes the environment because it is made of animal excretory waste.

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9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>Multiple Choice Questions>Q 9

Cattle husbandry is done for the following purpose
(i) milk production
(ii) agricultural work
(iii) meat production
(iv) egg production

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>Multiple Choice Questions>Q 10

Which of the following are Indian cattle?
(i) Bos indicus
(ii) Bos domestica
(iii) Bos bubalis
(iv) Bos vulgaris

EASY

9th CBSE