What is the total number of chambers in the stomach of domestic animals like cattle, buffalo, goat and sheep ?

The number of teeth that are developed twice in the lifetime of human being is

The number of bones in human skull is –

Which one of the following statements about animal cells and plant cells is correct?

At the age of 20 years, the number of bones in human body is approximately-

Which one of the following statements best describes the role of B cells and T cells in the human body?