Question

What is excretory system? Name any two excretory organs.

Hint:

Define excretion first, then name two organs that remove waste.

Answer 1

Step 1: Understand the question:
The question has two parts. First define the excretory system. Then name any two excretory organs. It is a 2 mark question and the answer should stay within 35 words.

Step 2: Recall the definition:
Excretion is the process by which waste products are removed out of the body.
The group of organs that does this work is called the excretory system.

Step 3: Recall the organs:
Waste leaves the body through the skin (as sweat), the lungs (as carbon dioxide), the kidneys (as urine) and the gastrointestinal tract (as solid waste).
Any two of these are enough.

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

Final Answer:
The excretory system removes waste products from the body. Two organs are the kidneys and the skin. \[ \boxed{\text{Excretory system removes body waste; kidneys and skin}} \]