Standard Science Primary 3 Diversity

Sara observed a whale in the ocean and correctly identified it as a mammal. Which of these observations helped her conclude it is a mammal?

A It breathes through gills.
B It has fins and a tail.
C It lives in the water.
D It produces milk for its young.
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Worked Solution

Step 1: Identify characteristics of mammals (hair, producing milk, giving birth to live young). Step 2: Compare with fish (scales, gills, laying eggs). Step 3: Only the production of milk is a defining mammalian trait among the options.

Correct answer: It produces milk for its young.

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