Agroup of lymphocytes that killes certain type of cels called _____.

The hypersensitive response of the immune system to certain antigen is called _______.

Given below are the three statements each with two blanks. Select the option which correctly fills up the blanks in any two statements. (A) Each seminiferous tubule is lined on its inside by two types of cells called overset(i)"______" and overset(ii)"______" . (B) The seminiferous tubulus open into the overset(i)"______" through overset(ii)"______" . (C) The enlargeed end of penis called the overset(i)"______" is covered by a loose fold of skin called the overset(ii)"______" .

A type of vegetative propagation where the lower branches of the plant are bent down and covered with soil is called_____.

Fluorescence and phpsphorescen e are the type of common material phenomenon called_____

Correct the statements by changing underlined words only. What is the type of species diversity called community?

Correct the statements by changing underlined words only. What is the type of species diversity called community?

Why certain cotton plants are called Bt cotton?