EASY
11th CBSE
IMPORTANT
Earn 100
Differentiate between essential and non-essential mineral elements.
Important Questions on Sample Question Paper a Highly Simulated Sample Question Paper for CBSE Class XI
MEDIUM
11th CBSE
IMPORTANT
What is symbiotic nitrogen-fixation? Explain briefly.
EASY
11th CBSE
IMPORTANT
Give the names of bacteria involved in nitrogen-fixation.
MEDIUM
11th CBSE
IMPORTANT
Why do farmers use leguminous crop to provide nitrogen to soil?
EASY
11th CBSE
IMPORTANT
Name the enzyme involved in biological nitrogen-fixation.
HARD
11th CBSE
IMPORTANT
Describe the mechanism of absorption of mineral salts by roots of higher plants.
MEDIUM
11th CBSE
IMPORTANT
Describe the role of human ear in maintaining the equilibrium of body. Also mention disorders related to ear malfunction.
HARD
11th CBSE
IMPORTANT
Discuss the functions of the central nervous system.
