Question 1

Study the classification table below. Which one of the following is classified wrongly?

Accepted Answer

(4) mushroom. The classification table categorizes 'ant', 'tree', and 'chicken' as Living Things, and 'book' and 'toy bear' as Non-living Things. Mushrooms are fungi, which are living organisms (they grow, reproduce, respire). Therefore, 'mushroom' is wrongly classified under 'Non-living Things'.

Question 2

Study the table below. Based on the observable characteristics of the fruits above, which one of the following best represents the headings for Groups A and B?

Accepted Answer

(3) Has one seed / Has many seeds. Group A contains fruits like rambutan and mango, which typically have one large seed. Group B contains fruits like grapes/berries and papaya, which typically have many seeds. Therefore, classifying them by the number of seeds is the best observable characteristic.

Question 3

The diagram below shows an animal. Based on what is observed from the diagram, which of the following represents the animal?

Accepted Answer

(2) Q. The animal shown is a ladybug. Following the flowchart: 
1. 'Does it have six legs?' - Yes (ladybugs are insects). 
2. 'Does it have spots on its body?' - Yes (the ladybug in the diagram has spots). 
Following the 'Yes' path from the second question leads to 'Q'.

Question 4

The table below shows the characteristics of X, Y and Z. Which of the following best represents X, Y and Z?

Accepted Answer

(3) animal / plant / non-living thing. X: Cannot make its own food but can reproduce. This describes an animal.
Y: Can make its own food and can reproduce. This describes a plant.
Z: Cannot make its own food and cannot reproduce. This describes a non-living thing.
Therefore, X=animal, Y=plant, Z=non-living thing, matching option (3).

Question 5

Mrs Lee placed two similar pots of plants, X and Y, in the school garden for a few days. She watered plant X daily but did not water plant Y. After some time, she observed that plant Y died but plant X grew taller. Based on the experiment, she concluded that plants need ____ to stay alive.

Accepted Answer

(4) water. The experiment's only differing variable between Plant X and Plant Y was water. Plant X received water and grew, while Plant Y did not receive water and died. This directly demonstrates that plants need water to stay alive.

P3 Science CA1 2025 — Nanyang

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