Standard Science Primary 3 Diversity

Siti saw a whale in the ocean and thought it was a fish. Which of the following observations would prove that a whale is a MAMMAL and not a fish?

A It breathes through gills.
B It has a tail to help it swim.
C It lives in the water.
D It gives birth to its young alive.
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Worked Solution

Step 1: Identify characteristics of fish (scales, gills, lay eggs). Step 2: Identify characteristics of mammals (hair, give birth alive, produce milk). Step 3: Giving birth to live young is a mammalian trait that distinguishes whales from most fish.

Correct answer: It gives birth to its young alive.

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