MEDIUM
12th CBSE
IMPORTANT
Earn 100

Draw a labelled diagram of the sectional view of a mature pollen grain of angiosperms. Explain the function of any two of its parts.

Important Questions on Model Question Papers 2
MEDIUM
12th CBSE
IMPORTANT
Identify a, b, c, d, e and/in the following table:
Name of Enzyme/Bioactive Molecule |
Source | Functions |
(i) a | Streptococcus | b |
(ii) c | d | immuno-suppressive agent in organ transplant patients |
(iii) Statins | e | f |

MEDIUM
12th CBSE
IMPORTANT
Antibody-mediated immunity is called humoral immunity.

MEDIUM
12th CBSE
IMPORTANT
Give reason for the following statement:
How is a child protected from a disease for which he/she is vaccinated ?

MEDIUM
12th CBSE
IMPORTANT
Name the type of cells, the AIDS virus enters after getting into the human body.

HARD
12th CBSE
IMPORTANT

MEDIUM
12th CBSE
IMPORTANT

MEDIUM
12th CBSE
IMPORTANT

MEDIUM
12th CBSE
IMPORTANT
