Which non-metal is essential for our life and all living beings inhale it during breathing?

Which of the following mineral is essential for nitrogenaseenzyme during reduction of atmospheric nitrogen into ammonia?

Which is the fundamental property of all living organisms ?

Why reproduction is necessary? Is it essential for survival? If a living organism does not reproduce, to which category will it belong, living or non-living?

Which pathway of respiration is common in all living organisms ? Where does it occur inside the cell and what are the products ?

Assertion: Human beings have two sets of teeth during their life. Reason: Human beings have thecodont dentition.

Which life processes are essential for production of energy required by body ?

Which of the following are non functional in human beings?

Water is very essential for life. Write any three features for plants and animals which enable them to survive in water scarce environment.