P3 Science CA2 2025 — Anglo Chinese

Solve the crossword puzzle by filling in the blanks with the correct words. Across: 1. All living things change as they ____ over time. 2. A life cycle is a repeated ____ of change. 3. All living things have different number of ____ in their life cycle. 4. Life cycles ensure that living things of the same kind ____ to live on Earth. Down: 5. A ____ must first be planted into the soil in order for flowering plants to grow. 6. When some animals grow bigger, they shed their outer skin to grow a new one. This process is known as ____.

Fill in the blanks to the cloze passage, using the helping words given in the box. Helping words: spread, breed, four, cause, three, stagnant. A mosquito has (i) ____ stages in its life cycle. It is not the male but the female mosquito that lays its eggs in (ii) ____ water. Most of the mosquitoes do not (iii) ____ diseases but some mosquitoes such as the Aedes mosquitoes do. When temperatures and rainfall are higher, mosquitoes (iv) ____ more quickly.

Draw and label the stages of a life cycle of a flowering plant in the box. (Do not draw pictures)

The diagram shows how a green bean seedling changes as it grows. (a) In the diagram above, draw a line and label the plant part seen growing in Stage B but not in Stage A. (b) Daniel wanted to find out how the location where seeds are placed affects their growth. Write numbers 1 to 4 to show the correct order of the steps he should take to carry out his investigation. Steps: - Water both pots with equal amounts of water daily. - Put two green bean seeds each into two similar pots with the same amount of garden soil. - Observe the growth of the seeds and measure their height over a week. - Place the pots with seeds in different locations. One in the freezer and the other by the window. (c) Name a tool you can use to measure how tall the green bean plants are after one week.

Judy observed plant M in her school garden as shown. (a) Tick (✓) the statement(s) that correctly describes plant M. (i) It is a flowering plant. (ii) It reproduces from spores. (iii) It has four stages in its life cycle. (b) Name the stage of plant M. Give a reason for your answer.

Study the two cycles in the diagrams. (a) State a similarity between the diagrams. (b) State a difference between the young and adult in diagram 1.

The diagram shows the life cycle of a mealworm beetle. (a) Name stages A and B in the diagram above. (b) The following are statements of the life cycle of the mealworm beetle. Write the letter 'T' if the statement is true and 'F' if the statement is false. (i) The adult has wings. (ii) At stage B, it has six legs. (iii) The young looks like the adult. (iv) The egg stage is the first stage of its life cycle.

Study the flowchart of some animals. (a) State what 'Question A' is and name 'Animal A'.

The diagrams show the life cycles of a frog and butterfly. (a) State two differences between the life cycle of a frog and the butterfly. (b) State a difference between stage X and stage Y of the butterfly. (c) Shane studied the life cycle of a butterfly. He used a graph to record the number of days each stage took. Based on the graph, how many days does it take for the butterfly to grow into an adult after the egg hatches?

Su Lin wanted to find out the conditions needed for seed K to grow. She placed equal number of seeds K, in each of the four pots, W, X, Y and Z, and recorded their growth in the table as shown. Pot W: garden soil, in the cupboard — plant did not grow. Pot X: garden soil, Garden — plant grew tall and leafy. Pot Y: sandy soil, Garden — plant grew very small. Pot Z: clayey soil, Garden — plant grew small. (a) State which two pots must be compared to find the effect of each of the two changed variables on the growth of seed K. Changed Variable — Pots: Type of soil — ____ and ____ Presence of light — ____ and ____ Su Lin carried out another experiment to find out how amount of water affects the height of the plant grown from seed K. She planted four identical seed K in the field, at equal distance from one another. She recorded the height of the plant over three weeks in the table as shown. Amount of water given daily (ml): 20, 40, 60, 80. Height of plant: 3, 5, 8, 13. (b) How does the amount of water given daily affect the height of the plant?