Question 1

Statements A, B, C and D below describe the characteristics of bacteria and fungi.
A  They cannot reproduce.
B  They can make their own food.
C  They can cause diseases in other organisms.
D  They can break down dead organisms into simpler substances.

Which of the above statements are not correct?

Accepted Answer

A. A and B only. Bacteria and fungi CAN reproduce (so A is incorrect) and most CANNOT make their own food — they are decomposers/parasites (so B is incorrect). C and D are correct characteristics. Therefore the statements that are not correct are A and B.

Question 2

Mary placed two similar pots of plants, X and Y, in a school garden for a few days. She watered Plant Y daily but not Plant X.

After some time, she observed that Plant X died but Plant Y grew well and taller. She concluded that plants need water to live.

What is the aim of her experiment?

To find out if ____.

Accepted Answer

B. water is needed for plants to grow.. The only variable changed between Plant X and Plant Y is the watering (Plant X has dry soil, Plant Y has wet soil). Plant Y grew well and taller while Plant X died. So the aim is to test whether water is needed for plants to grow.

Question 3

Ahmad recorded his observations on the development of plant X.

When would plant X need light to make food?

Accepted Answer

D. Day 10. Plants make food (photosynthesis) in their leaves using light. The leaf only appeared on Day 10, so the plant would need light to make food from Day 10 onwards.

Question 4

In which part of the digestive system is food first broken down into smaller pieces?

Accepted Answer

A. Mouth. Food first enters the mouth, where the teeth chew (physically break down) food into smaller pieces. The gullet only transports food; the stomach and small intestine come later in digestion.

Question 5

Lisa has two similar plants. She removed all the roots from plant B and placed it back into the soil.

When the plants were blown by a strong gust of wind, she noticed that plant B fell but plant A did not.

Based on her observation, what can she conclude about the function of roots?

Accepted Answer

B. The roots anchor the plant firmly to the ground.. Plant A (with roots) stayed upright in the wind while Plant B (without roots) fell. This shows that the roots anchor the plant firmly to the ground.

Question 6

The picture below shows animal N.

The hard covering of animal N prevents it from being harmed by other organisms. It does not break easily.

Which of the following property describes the body covering of animal N?

Accepted Answer

A. Strong. The covering prevents harm and does not break easily — this describes the property 'strong'. Flexible means it bends easily; waterproof means it keeps water out; floating relates to density. Only 'strong' matches resistance to breaking.

Question 7

The diagram shows a plaster on a finger. The plaster is used to keep an injury clean and prevent water from reaching the injury.

The table below shows the properties of four materials, W, X, Y and Z. A tick (✓) indicates that the material has the property and a cross (✗) indicates that the material does not have that property.

Based on the properties shown above, which material is most suitable to make the plaster?

Accepted Answer

C. Y. A plaster must be waterproof (to keep water out of the wound) AND flexible (to bend with the finger). From the table: W (✗, ✗) — neither; X (✗, ✓) — not waterproof; Y (✓, ✓) — both; Z (✓, ✗) — not flexible. Only Y has both required properties.

Question 8

Which of the following property is true for both air and a pencil?

Accepted Answer

B. They take up space.. Air is a gas and cannot be seen, has no definite shape and no definite volume. A pencil (a solid) has a definite shape and volume but is visible. The only property common to both matter forms is that they take up space (all matter has volume / occupies space).

Question 9

Study the flow chart below.

Which of the following correctly represents a chair?

Accepted Answer

D. O. A chair is a solid: it takes up space → Yes; it has a definite volume → Yes; it has a definite shape → Yes. Following all 'Yes' branches in the flow chart leads to O.

P4 Science CA1 2025 — Red Swastika

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