Trial and error
The fluid part of the body
A living tissue specialised for the transportation of substances
The part of the lung where exchange of gases takes place
The movement of the blood along the alimentary canal by muscular action
The structure that is the smallest basic unit of life
A mature living plant cell contains ...
Which of the following structures is found in a plant cell but not in an animal cell?
The main advantage of higher magnification in microscopical investigation is to …
Which one of the parts of the microscope does not contain lenses?
The absorption of water in the human body mainly takes place in the …