Biology in Human Welfare Sample Questions for Class 12
Question 1
What is the mineralized matrix, similar to bone but harder, that forms the primary mass of each tooth?
A. enamel
B. dentin
C. cementum
D. pulp
Question 2
What connects muscle to bones?
A. cartilage
B. ligaments
C. joints
D. tendons
Question 3
The skeleton of sharks and human embryos are composed of which type of connective tissue?
A. bone
B. cartilage
C. adipose
D. collagen
Question 4
What is an advantage of using inorganic fertilizers when growing plants?
A. They improve the physical properties of the soil.
B. They can be taken in almost immediately by the roots.
C. They are of higher quality than organic fertilizers.
D. They contain minerals that are in their proper ionic form.
Question 5
Which is not a function of the skeletal system?
A. support and protection
B. assist in movement
C. storage of inorganic material
D. correct hormone imbalance