List of top Biology Questions on human health and disease asked in CBSE CLASS XII

Name the primary and secondary lymphoid organs.
Discuss with your teacher what does 'a suitable gene' means in the context of DNA vaccines.
What measure would you take to prevent water-borne diseases?

How does the transmission of each of the following diseases take place?

(a) Amoebiasis
(b) Malaria
(c) Ascariasis
(d) Pneumonia

In which way has the study of biology helped us to control infectious diseases?
What are the various public health measures which you would suggest as safeguard against infectious diseases?
How is a cancerous cell different from a normal cell?