SCIENCE FORM 3 ONLINE FLASHCARD

Front

What is the organ through which insects breathe?

Back

Trachea

Front

Where does the exchange of oxygen and carbon dioxide occur in the lungs?

Back

Alveolus

Front

What is the function of guard cells in plants?

Back

They control the opening and closing of stomata.

Front

What is a voluntary action?

Back

An action that is controlled by the will, such as talking.

Front

What part of the human eye is responsible for focusing light?

Back

Cornea

Front

What is the role of the diaphragm in respiration?

Back

It helps in the process of breathing by contracting and relaxing.

Front

What are stomata?

Back

Tiny openings on the surface of leaves that allow gas exchange.

Front

What is peristalsis?

Back

Involuntary muscle contractions that move food through the digestive system.

Front

What is the optic nerve?

Back

The nerve that transmits visual information from the retina to the brain.

Front

What is the function of the rib cage?

Back

It protects the heart and lungs and aids in breathing.