Fill in the blanks:
Taking in of air rich in oxygen is called............... .

Fill in the blanks : Flowers which do not open are called …….

Fill in the following blanks with suitable words: The taking in air rich in oxygen into the body is called …………….

Fill in the blanks. : A young growing plant is called__________.

Fill in the blanks: The process of obtaining and utilization of food by an organism is called.............. .

Fill in the blanks The capacity to do work is called_____.

Fill in the blanks : Plants are called as ............because they can fix carbon dioxide .

Fill in the blanks: The combination of two or more cells is called a ________.