Question : During hibernation state, the frog respires through which of the following?

Option 1: Only heart

Option 2: Only lungs

Option 3: Only skin

Option 4: Both lungs and skin

Question : Which of the following brings back deoxygenated blood from different parts of the human body to the heart?

Option 1: Veins

Option 2: Arteries

Option 3: Nerves

Option 4: Lungs

Question : Which part of the human body is affected by the Alzheimer's disease?

Option 1: Heart

Option 2: Kidney

Option 3: Immune System

Option 4: Brain

Question : The cause of heart attack is:

Option 1: bacteria

Option 2: virus

Option 3: lack of blood supply to the heart

Option 4: impairment of heart's working due to unknown reason

Question : Leukaemia is a cancer of the:

Option 1: Lungs

Option 2: Uterus

Option 3: Skin

Option 4: Blood