Question 1

Which one of the following observations below is correctly matched to its characteristics of living things?

Accepted Answer

(1) The tortoise lays eggs. Living things can reproduce.. Option (1) correctly matches "The tortoise lays eggs" with "Living things can reproduce," as laying eggs is a form of reproduction. Option (2) describes growth, not response to changes. Option (3) describes movement, not the need for air, food, and water. Option (4) describes response to changes, not growth.

Question 2

The classification chart below shows two different groups of things. Which of the following should be placed in Group A?

Accepted Answer

(2) Mould. Group A contains Fern, Shark, and Mushroom, which are all living things. Group B contains Ruler, Window, and Flower pot, which are all non-living things. Mould is a type of fungus and is a living organism, thus it belongs in Group A.

Question 3

Jane kept 8 hamsters in a cage. The number of hamsters was counted and recorded over 24 months in the table below. Based on the information recorded in the table, which two statements below are true about the hamsters? A Living things can die. B Living things can reproduce. C Living things need air, food and water. D Living things respond to changes around them.

Accepted Answer

(1) A and B. The table shows the number of hamsters increased from 8 to 14, indicating reproduction (Statement B). The number also decreased from 14 to 8, indicating that some hamsters died (Statement A). The table does not provide information to confirm statements C or D.

Question 4

Which of the following statements is true?

Accepted Answer

(4) Plants can respond to changes around them.. Statement (4) is true; plants exhibit responses like phototropism (growing towards light) or thigmonasty (mimosa plant closing leaves when touched). Statement (1) is false as non-flowering plants exist. Statement (2) is false as some plants grow in water or on other plants. Statement (3) is false as many plants reproduce by spores or vegetative means.

Question 5

Sheela saw some plants in the school pond. She classified the plants she saw in 4 different groups based on their characteristics. Which group (W, X, Y or Z) should Sheela placed the plant below?

Accepted Answer

(3) Y. The plant shown at the bottom has roots in the soil underwater, with its stem and leaves extending above the water. In the classification table, Group Y contains plants B, E, G, which are also depicted as rooted in the pond's soil with parts extending above the water surface.

Question 6

Below are some characteristics that describes Plant X. It grows on rock. It does not bear flowers. It reproduce by spores. What could Plant X be?

Accepted Answer

(1) Moss. Mosses typically grow on rocks, do not produce flowers, and reproduce by spores. Mould is a fungus, not a plant. Orchids and Mimosa are flowering plants that reproduce by seeds.

Question 7

Which of the following are true about spores? A They are very small. B They help in reproduction. C They can only be found in fungi. D They can be developed into fruits.

Accepted Answer

(2) A and B only. Spores are microscopic (very small), making A true. They are reproductive units for many organisms like fungi, ferns, and mosses, making B true. C is false because spores are also found in plants like ferns and mosses. D is false because fruits develop from flowers/ovaries, not spores.

Question 8

What is the similarity between a mushroom and a bird's nest fern?

Accepted Answer

(3) Both reproduce by spores.. Mushrooms are fungi and ferns are plants. Both fungi and ferns reproduce by spores. Mushrooms do not have leaves or make their own food. Bird's nest ferns are not water plants.

Question 9

Which of the following groups consist of different types of fungi?

Accepted Answer

(3) Mushroom and toadstool. Mushrooms and toadstools are both types of fungi. Ferns are plants, and Bougainvillea is a flowering plant.

Question 10

Look at the pictures below carefully. How are the animals above similar? A They have wings. B They have six legs. C They have feelers. D They have a beak.

Accepted Answer

(1) A only. The images show an owl, a fly, and a butterfly. All three animals have wings. The owl has two legs, while the fly and butterfly have six. The owl does not have feelers, and the fly and butterfly do not have beaks.

Question 11

This living thing can be found in the wild. Which of the following characteristics of the above living thing are useful in the classification of it as a mammal? A It has thick hair. B It has strong legs. C It feeds its young with milk. D It feeds on other animals only.

Accepted Answer

(2) A and C only. The image shows a wolf-like animal, which is a mammal. Mammals are characterized by having hair or fur (A) and feeding their young with milk (C). Having strong legs (B) or being carnivorous (D) are not universal characteristics for all mammals.

Question 12

Study the pictures below. Which of the following shows the correct body coverings of Animals A, B and C?

Accepted Answer

(1) Animal A: Dry skin with scales, Animal B: Feathers, Animal C: Hair. Animal A is a crocodile (reptile), which has dry skin with scales. Animal B is a parrot (bird), which has feathers. Animal C is a rabbit (mammal), which has hair (fur). Option (1) correctly identifies these coverings.

Question 13

Study the group of animals below. Crocodile, Frog, Turtle, Lizard. Why does the frog not belong to the group above?

Accepted Answer

(4) It has moist skin.. Crocodiles, turtles, and lizards are reptiles, characterized by dry, scaly skin. A frog is an amphibian, characterized by moist skin. While some reptiles have tails and 4 legs, and all these animals lay eggs, the moist skin is the key distinguishing feature of a frog from the other reptiles.

Question 14

Which one of the following is an insect?

Accepted Answer

(2) [Image of fly]. Insects are characterized by having three body parts (head, thorax, abdomen), six legs, and usually a pair of antennae and wings. The fly (2) fits this description. The spider (1) has eight legs and two body parts (arachnid). The centipede (3) has many body segments and many legs (myriapod). The octopus (4) is a mollusc.

Question 15

The flow chart below shows the properties of four different objects W, X, Y and Z. Which of the following best represents objects W, X, Y and Z?

Accepted Answer

(4) W: Rubber hose, X: School gate, Y: Mirror, Z: Fish tank. Following the flowchart: W is flexible. X is not flexible and breaks easily. Y is not flexible, does not break easily, and does not allow light to pass through (opaque). Z is not flexible, does not break easily, and allows light to pass through (transparent/translucent). 
- A rubber hose is flexible, matching W. 
- A fish tank is not flexible, does not break easily, and allows light to pass through, matching Z. 
- A school gate is not flexible. A mirror is not flexible and opaque. While the 'breaks easily' property for X (school gate) and 'does not break easily' for Y (mirror) might be subject to interpretation, option (4) is identified as the correct answer in the key, suggesting a specific understanding of these properties within the context of the question.

Question 16

Kathy described a material as follows: It is flexible. It is waterproof. It comes from plant. Which object below is most likely made of the material that Kathy has described?

Accepted Answer

(2) [Image of eraser]. The characteristics (flexible, waterproof, from plant) describe rubber (latex). An eraser (2) is commonly made of rubber, fitting all three descriptions. A key is metal, a cup is often ceramic/plastic, and a book is paper, none of which fit all criteria.

Question 17

John put six objects made of different materials into a basin of water. The diagram below shows what he observed. What was he trying to find out?

Accepted Answer

(3) Whether the objects sink or float. The diagram shows some objects floating on the water surface and others sinking to the bottom. This directly demonstrates whether the objects sink or float in water, indicating John's objective.

Question 18

Sue set up an experiment to find out which 4 materials A, B, C and D is able to absorb water in the shortest time. She drew a line on the 4 materials to show the amount of water absorbed by each material as shown below. Which of the material above is most suitable to make raincoat?

Accepted Answer

(3) Material C. A raincoat should be made from a material that absorbs very little to no water, making it waterproof. Material C shows the lowest absorbed water level, indicating it is the least absorbent and thus most suitable for a raincoat.

Question 19

The bones support our body and gives us shape. Which of the following systems works with our bones to enable movements?

Accepted Answer

(1) Muscular system. The skeletal system (bones) provides the framework, and the muscular system provides the force for movement through muscle contractions that pull on the bones. These two systems work together to enable movement.

Question 20

Study the diagram below. What is the substance X that is absorbed into the circulatory system from the digestive system?

Accepted Answer

(2) Digested food. After food is digested in the digestive system, the broken-down nutrients (digested food) are absorbed into the bloodstream (circulatory system) to be transported to various parts of the body for energy and growth.

Question 21

The diagram below shows the skeletal system. Which parts of the skeletal system protect our organs?

Accepted Answer

(2) W and X only. W points to the skull, which protects the brain. X points to the rib cage, which protects the heart and lungs. Y points to the vertebral column, which protects the spinal cord. Z points to leg bones, which primarily provide support and movement, not organ protection in the same way. The question asks for parts protecting 'our organs', referring to major internal organs.

Question 22

What is the main function of the stem of a plant? A Hold the plant upright B Absorb water and minerals C Trap sunlight to make food D Anchor the plant firmly to the ground

Accepted Answer

(1) A only. The main function of the stem is to provide structural support, holding the plant upright (A). Absorption of water and minerals (B) and anchoring the plant (D) are functions of roots. Trapping sunlight to make food (C) is primarily the function of leaves.

Question 23

Study the diagram below carefully. After a thunderstorm, Daniel noticed that the plant in front of his house died after a few days. What is the possible reason that caused Plant P to die?

Accepted Answer

(4) Water was not able to be transported from the roots to the other parts of the plant.. Part X represents the stem, which is shown broken. The stem contains xylem vessels that transport water and minerals from the roots to the rest of the plant. If the stem is broken, this transport pathway is severed, preventing water from reaching the leaves and causing the plant to dehydrate and die.

Question 24

Gina removed one of the parts in the plant below and she noticed that the plant can still survive after a few days. Which part of the plant did she remove?

Accepted Answer

(2) All of B. For a plant to survive, its roots (D) and leaves (C) are essential for water absorption/anchorage and photosynthesis, respectively. Flowers (A) and fruits (B) are involved in reproduction but are not essential for the plant's immediate survival for a few days. Removing fruits would not directly kill the plant.

P3 Science CA2 2025 — Pei Hwa

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