Biology Questions

_____ reproduces by multiple fission.

T cell activation requires

___ are the carriers of heredity material.

Which of the following organ does NOT belong to human excretory system?

Slow-growing large coloured patches on the bark of trees are the examples of symbiotic life forms called ______.

The skin, the lining of the mouth, the lining of the blood vessels, lung alveoli and kidney tubules are all made of which type of tissue?

____ forms a common passage for both urine and sperms in human males.

The instrument used to examine a person's digestive tract is called ___.