Allergy, virus, carrot color - biology quiz

Polio is a disease caused by _______
Virus

Hay fever is a sign of _______
allergy

Heart attack occurs due to __________
lack of blood supply to the heart itself

The chief nitrogenous waste in humans _________
urea

The largest living bird is _______
ostrich

The function of Trypsin is to _______
break down proteins

What is " ALZHEIMER'S " disease ?
It is a disorder of the brain

The primary source of carbohydrates are ________
coal-far

Which animal may suffer from foot and mouth disease?
Cattle

Carrot is orange in colour because _______
it contains carotene