P3 Science CA1 2023 — Maha Bodhi

James observed a plant six months apart as shown below. Based on the pictures above, what characteristic of living things did he observe?

Which of the following statements is true about all plants?

Aliyah made the following statements about animal P. 'It provides milk for their young.' 'It can swim well in water.' 'It has fins.' Which group of animals does animal P belong to?

The diagram below shows a mushroom. How does it reproduce?

Study the animals shown in the table below. Which of the following pair of headings best represents group A and B above?

Study the two groups of plants below. Which one of the following are suitable headings for C and D?

Three students made the following statements about a living thing. Molly: It makes us sick. Kat: It can be found in yoghurt. Ben: It is so tiny. I cannot see it. Which of the following is possibly the living thing?

Study the flowchart below. Which of the animals above, F, G, H or J represents a penguin?

(a) Xavier kept two hamsters in a cage as shown below. (i) After a few days, what will he observe about the amount of water and food in the cage? [1] (ii) Based on his observation in a(i), state the characteristic of living things shown by the hamsters. [1] (b) He observed the hamsters daily and recorded the number of hamsters after 4 weeks in the table below. (Week 1: 2 hamsters; Week 4: 8 hamsters.) He did not add or remove any hamsters during this time. (i) Based on the table above, state the change in the number of hamsters over the four weeks. [1] (ii) Based on the characteristics of living things, give a reason for the change in the number of hamsters over the four weeks. [1]

Study the flow chart below. (a) State one similarity between K and L. [1] (b) State one difference between L and M. [1]

(a) Khan observes animal Q shown below. (i) Which animal group does Q belong to? [1] (ii) Study the scorpion shown below. Based on the observable characteristics, do you agree that the scorpion belongs to the same animal group as animal Q shown in (a)(i)? Explain why. [1] (b) Khan recorded the characteristics of four different animals, R, S, T and U in the table below. (R: no scales, no eggs, not only two legs; S: yes scales, yes eggs, not only two legs; T: no scales, yes eggs, not only two legs; U: no scales, yes eggs, yes only two legs.) (i) Based on the table, state all the characteristics of animal U. [1] (ii) Based on the table above, which of the animals above, R, S, T or U is a frog? Explain your answer. [1]

Tom wanted to have bread for breakfast but found black spots growing on his bread as shown below. (a) What are the black spots on his bread? [1] (b) Which group of living things does the black spots belong to? [1] Tom wanted to find out what caused the black spots to appear on the bread. He used two slices of bread, V and W, one with water added and the other without water added. Both slices were placed in two different resealable bags and left on the dining table for 3 days. (Bread V: water added, black spots Yes after 3 days; Bread W: no water added, black spots No after 3 days.) (c) Based on the results, state the condition needed for the black spots to grow on the bread. [1] Tom carried out another experiment on another two identical slices of bread, X and Y. Both slices of bread had water added and placed in different sealed bags. (Bread X placed on dining table; Bread Y placed in fridge. After 3 days: Bread X had 10 black spots, Bread Y had 3 black spots.) (d) Based on the results above, state what Tom can do to reduce the growth of black spots on his bread. [1]

Study the picture below. Which one of the materials below can be used to make part X of a car tyre shown above?

Which one of the following properties of material is suitable for a water bottle used by young children?

Melody made the following observations on the life cycle of an animal. 'There are three stages in the life cycle.' 'The young looks like the adult.' Which one of the animals below was she observing?

Study the diagram of a tomato plant. How many stages are there in the life cycle of the tomato plant?

Study the flowchart below. Which one of the materials above, A, B, C or D is suitable for a bath towel?

Study the table below. A (✓) shows that a property is present. (H: floats ✓, breaks easily ✓, flexible ✗; I: floats ✗, breaks easily ✓, flexible ✓; J: floats ✓, breaks easily ✗, flexible ✗; K: floats ✓, breaks easily ✗, flexible ✓.) Which one of the materials is suitable to make a swimming kickboard shown above?

Which of the following statements about the life cycles of all flowering plants are true? A. They follow a pattern. B. They are natural processes. C. All the cycles begin with a seed. D. All the cycles take the same time to complete.

A larva of a butterfly was left in a setup. It was provided with some leaves. The setup was left over a few days. The number of leaves left was recorded in the form of a graph. Which one of the following graphs correctly shows the changes in the number of leaves in the setup from the larva to the pupa stage of the butterfly?

Study the table below. A (✓) shows that a property is present. (S: absorb water ✗, breaks easily ✗, flexible ✗; T: absorb water ✓, breaks easily ✗, flexible ✗; U: absorb water ✗, breaks easily ✓, flexible ✓.) (a) Based on the table above, state all the properties of material U. [1] (b) Based on the table above, state one similarity between materials S and T. [1] (c) Study the diagram below (windscreen of car). Which one of the materials, S or T is more suitable to make the windscreen of a car? Explain your answer. [2]

Bernetta conducted an experiment with materials X, Y and Z as shown below. She placed the materials, one at a time, in between a lighted torchlight and a table as shown below. She observed the table if the material allows some or most light to pass through or does not allow light to pass through. She recorded her observations in the table below. (X: does not allow light to pass through; Y: allow some light to pass through; Z: allow most light to pass through.) (a) Based on the results above, match materials X, Y and Z to the objects in the table below (Cardboard / Clear glass / Frosted glass). [1] (b) Which material, X, Y or Z is best to make a fish tank so that the fish can be seen clearly? Explain your answer. [1]

The diagram below shows a plant. (a) Which stage of the life cycle of a flowering plant is the above plant at? [1] (b) Which stage of the life cycle of a plant has leaves but cannot reproduce? [1] (c) Draw the life cycle of the plant in the box below. [2]

Ian was observing the life cycle of mosquito. The diagram below shows the life cycle of mosquito (Egg → Stage R → Stage S → Stage T → Egg). (a) Which stage, R, S or T does mosquito not take in any food? [1] (b) One method to stop breeding of mosquitoes is to pour oil on the surface of the water. Explain how this can prevent breeding of mosquitoes. [1] (c) Ian suggested that the best way to get rid of the mosquitoes is to kill them at their adult stage. Do you agree with Ian? Give a reason for your answer. [1] The diagram below shows the life cycle of a grasshopper (Egg → Young → Adult). (d) State one difference between the life cycle of mosquito and the life cycle of a grasshopper. [1]