Questions

Which of the following characters is recessive in a pea plant?

Which of the following plant tissues is capable of cell division?

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

People (have got so addict) to their virtual life that they forget there is more to life than just sitting in front of a plastic box.

In the following question, out of the given four alternatives, select the one which best expresses the meaning of the given word.

Farcical

On 26 October 2017, which company became the first ever Indian company to cross a market capitalization of Rs 6 trillion?

In November 2017, second phase of ‘Bharat Net Project’ was launched. How much is its approximate outlay?

Anti-defection law was passed in which Constitutional Amendment Act?

Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.

The antigen-antibody immunological reaction is used to be regarded as typical of immunological responses. Antibodies are proteins synthesized by specialized cells called plasma cells, which are formed by lymphocytes (cells from the lymph system) when an antigen, a substance foreign to an organism's body, comes in contact with lymphocytes. Two important manifestations of antigen-antibody immunity are lysis, the rapid physical rupture of antigenic cells and the liberation of their contents into the surrounding medium, and phagocytosis, a process in which antigenic particles are engulfed by and very often digested by macrophages and polymorphs. The process of lysis is executed by a complex and unstable blood constituent known as complement, which will not work unless it is activated by a specific antibody; the process of phagocytosis is greatly facilitated when the particles to be engulfed are coated by a specific antibody directed against them.

One of the two important manifestations of antigen-antibody immunity is lysis while the other is