EASY
9th CBSE
IMPORTANT
Earn 100

The example of ‘green manure’ is

17.5% studentsanswered this correctly

Important Questions on Improvement in Food Resources

EASY
9th CBSE
IMPORTANT
Root nodules of leguminous plants contain
EASY
9th CBSE
IMPORTANT
The enrichment of water bodies with nutrients leading to excessive growth of phytoplankton is known as
EASY
9th CBSE
IMPORTANT
To solve the food problem of the country, which among the following is necessary?
EASY
9th CBSE
IMPORTANT

Find out the correct sentence

(i) Hybridisation means crossing between genetically dissimilar plants.

(ii) Cross between two varieties is called as interspecific hybridisation

(iii) Introducing genes of the desired character into a plant gives genetically modified crop.

(iv) Cross between plants of two species is called as inter-varietal hybridisation.

EASY
9th CBSE
IMPORTANT
Weeds affect the crop plants by
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 of the following nutrients is not available in fertilisers?
EASY
9th CBSE
IMPORTANT
Preventive and control measures adopted for the storage of grains include