What is phagocytosis?

Assertion (A) : IUD's are inserted inside the ovary. Reason (R ) : IUD's increases phagocytosis of sperms

Which of the following are the drawbacks of the IUDs ? (i) Their spontaneous expulsion, even without the woman's knowledge (ii) They can cause excess mensutrual bleeding and pain (iii) Risk of infection (iv) They increase the phagocytosis of sperms (vi) They suppress sperm motility.

What is cryptorchism? What is the solution for this?

What do you understand by the term 'phagocytosis'?

What is epiglottis and what does it do ?

What is a thermopile? On what principle does it work?