EASY
9th CBSE
IMPORTANT
Earn 100
High yield varieties need
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Important Questions on Improvement in Food Resources
EASY
9th CBSE
IMPORTANT
If there is a row of groundnut and a row of sunflower in a field it is for:
EASY
9th CBSE
IMPORTANT
In mixed cropping, care should be taken that the crops chosen should have:
MEDIUM
9th CBSE
IMPORTANT
Find out the correct sentence.
(i) Hybridisation means crossing between genetically dissimilar plants.
(ii) Cross between two varieties is called inter-specific hybridisation.
(iii) Introducing genes of desired character into a plant gives genetically modified crop.
(iv) Cross between plants of two species is called inter-varietal hybridisation.
EASY
9th CBSE
IMPORTANT
Weeds affect the crop plants by
EASY
9th CBSE
IMPORTANT
Which one of the following species of honey bee is an Italian species?
EASY
9th CBSE
IMPORTANT
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 excess of water from clayey soil.
(iv) Its excessive use pollutes environment because it is made of animal excretory waste.
EASY
9th CBSE
IMPORTANT
Which one is an oil yielding plant among the following?
EASY
9th CBSE
IMPORTANT
Which one is not a source of carbohydrate?
