Question

What is respiratory system? Name two respiratory organs.

Hint:

Respiration means taking in oxygen and giving out carbon dioxide.

Answer 1

Step 1: Understand the question:
We need to define the respiratory system and name two of its organs. The answer for 2 marks should be within 35 words.

Step 2: Recall the definition:
Respiration is the process by which oxygen is taken in and carbon dioxide is given out.
The respiratory system is the group of organs that carries out this process.

Step 3: Recall the organs:
Air enters through the nose, then passes through the pharynx, larynx, trachea and bronchi, and finally reaches the lungs.
All of these are respiratory organs. Any two will get the marks.

Step 4: Write the answer:
Give one mark for the definition and half a mark for each organ.

Final Answer:
The respiratory system takes oxygen in and removes carbon dioxide. Two organs are the nose and the lungs. \[ \boxed{\text{Respiratory system: nose and lungs}} \]