Microbes are classified as:

What is immunity?

Akhilesh is having a headache and fever. He takes some pills to reduce the fever and headache before going to the doctor. What is this type of treatment called? How can we reduce the effects of the disease? What is the limitation of this type of treatment? What is the possible remedy for these diseases?

Classify the following diseases as infectious or non-infectious:
$(a)$ $AIDS$
$(b)$ Tuberculosis
$(c)$ Cholera
$(d)$ High blood pressure
$(e)$ Heart disease
$(f)$ Pneumonia
$(g)$ Cancer

Your younger brother observes some mosquitoes sucking juices of cut fruit pieces,though it is common knowledge that mosquitoes suck blood of humans. How will you explain this behaviour to him?

Why are antibiotics not effective for viral diseases?