Question

What is true about T-Iymphocytes in mammals? 

(a) They scavenge damaged cells and cellular debris 

(b) These are produced in thyroid 

(c) There are three main types-cytotoxic T-cells, helper T-cells and suppressor T-cells 

(d) These originate in lymphoid tissues 

Answer 1

The correct option is (c) There are three main types-cytotoxic T-cells, helper T-cells and suppressor T-cells.

Explanation:

The function of T-cells is to provide immunity (cellular type) and not to scavenge damaged cells and cell debris. These are produced in bone marrow and get matured in thymus gland. Hence, the only true statement ls that there are three types of T-cells, i.e. cytotoxic, helper and suppressor.