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Primary 5 Science Semestral Assessment 2 (End of Year) Paper 2

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Questions

TuitionGoWhere Exam Practice (AI) - Science Primary 5

School: TuitionGoWhere Exam Practice (AI)
Subject: Science
Level: Primary 5
Paper: SA2 Practice Paper (Version 2 of 5)
Topic Focus: Diversity (Adaptation, Classification, Interactions)
Duration: 1 hour 45 minutes
Total Marks: 60

Name: __________________________
Class: __________
Date: __________________________

Instructions to Candidates

Do not turn over this question paper until you are told to do so.
Write your Name, Class, and Date in the spaces provided.
Answer all questions.
Write your answers in the spaces provided in this question paper.
The number of marks available for each question or part question is given in brackets [ ] at the end of each question or part question.

Section A (20 marks)

For each question from 1 to 20, four options are given. One of them is the correct answer. Make your choice (1, 2, 3 or 4) and write your answer in the brackets provided. Each question carries 1 mark.

1. Which of the following groups of animals are all mammals? (1) Bat, Whale, Penguin (2) Dolphin, Seal, Platypus (3) Crocodile, Turtle, Snake (4) Frog, Toad, Salamander Answer: ( )

2. The table below shows the characteristics of four different plants.

Plant	Has Flowers?	Has Cones?	Reproduces by Spores?
A	Yes	No	No
B	No	Yes	No
C	No	No	Yes
D	Yes	Yes	No

Which plant is most likely a fern? (1) Plant A (2) Plant B (3) Plant C (4) Plant D Answer: ( )

3. Why do cacti have spines instead of broad leaves? (1) To attract insects for pollination (2) To reduce water loss through transpiration (3) To increase the surface area for photosynthesis (4) To protect the plant from strong winds Answer: ( )

4. Which of the following is a characteristic shared by both birds and insects? (1) They have feathers. (2) They lay eggs. (3) They have six legs. (4) They have a backbone. Answer: ( )

5. Look at the classification key below.

1a. Has wings ....................... Go to 2 1b. Does not have wings ......... Go to 3 2a. Has feathers .................... P 2b. Does not have feathers ...... Q 3a. Has 6 legs ........................ R 3b. Has more than 6 legs ........ S

Which animal could be Q? (1) Eagle (2) Butterfly (3) Bat (4) Spider Answer: ( )

6. Which of the following adaptations helps a polar bear survive in the Arctic? (1) Thin skin to release heat (2) White fur for camouflage in snow (3) Large ears to hear prey from far away (4) Webbed feet for climbing trees Answer: ( )

7. A student observed an animal in the garden. It had a hard outer covering, three pairs of jointed legs, and two antennae. To which group does this animal belong? (1) Arachnids (2) Crustaceans (3) Insects (4) Myriapods Answer: ( )

8. Why do fish have streamlined bodies? (1) To help them breathe underwater (2) To reduce water resistance while swimming (3) To protect them from predators (4) To help them float on the surface Answer: ( )

9. Which of the following statements about fungi is correct? (1) They make their own food using sunlight. (2) They have roots, stems, and leaves. (3) They obtain food by breaking down dead organic matter. (4) They reproduce using seeds. Answer: ( )

10. The diagram below shows the life cycle of a butterfly.

Diagram for Q10 (P5 Science)

Generated diagram for Q10.

At which stage does the butterfly feed the most? (1) A (2) B (3) C (4) D Answer: ( )

11. Which of the following is an example of a structural adaptation? (1) A bear hibernating in winter (2) A bird migrating to a warmer place (3) A chameleon changing its skin colour (4) A duck having webbed feet Answer: ( )

12. Why do desert plants often have thick, waxy stems? (1) To store water (2) To attract pollinators (3) To support heavy fruits (4) To absorb more sunlight Answer: ( )

13. Which of the following animals is an amphibian? (1) Lizard (2) Newt (3) Turtle (4) Crocodile Answer: ( )

14. What is the main function of the gills in a fish? (1) To help the fish swim faster (2) To extract oxygen from water (3) To regulate body temperature (4) To sense vibrations in the water Answer: ( )

15. Which of the following pairs of animals are most closely related? (1) Shark and Dolphin (2) Bat and Bird (3) Whale and Cow (4) Snake and Earthworm Answer: ( )

16. Why do some plants have bright and colourful flowers? (1) To attract insects for pollination (2) To scare away herbivores (3) To absorb more sunlight (4) To store excess water Answer: ( )

17. Which of the following is NOT a characteristic of all living things? (1) Growth (2) Reproduction (3) Movement from place to place (4) Response to changes Answer: ( )

18. The diagram shows a food chain: Grass → Grasshopper → Frog → Snake. If the population of frogs decreases significantly, what will likely happen to the population of grasshoppers in the short term? (1) It will decrease. (2) It will increase. (3) It will remain the same. (4) It will become extinct. Answer: ( )

19. Which of the following features helps a camel survive in the desert? (1) Long eyelashes to keep out sand (2) Thin fur to lose heat quickly (3) Small hooves to sink into the sand (4) Short neck to stay close to the ground Answer: ( )

20. Which of the following groups contains only flowering plants? (1) Fern, Moss, Pine (2) Rose, Sunflower, Orchid (3) Mushroom, Yeast, Mould (4) Cactus, Fern, Moss Answer: ( )

Section B (40 marks)

Answer all questions in the spaces provided. The number of marks available for each question or part question is given in brackets [ ].

21. The table below shows the characteristics of four animals, P, Q, R, and S.

Animal	Body Covering	Breathing Organ	Reproduction
P	Scales	Lungs	Lays eggs
Q	Feathers	Lungs	Lays eggs
R	Hair/Fur	Lungs	Gives birth to young
S	Moist Skin	Lungs and Skin	Lays eggs

(a) Identify the group of animals to which each animal belongs. [2]

Animal P: __________________________
Animal Q: __________________________

(b) Animal S is an amphibian. Explain why Animal S needs to live near water or in damp places. [2]

22. Study the diagram of the plant below.

Diagram for Q22 (P5 Science)

Generated diagram for Q22.

(a) State the function of the part labeled Leaf. [1]

(b) Some plants, like the cactus, have modified leaves in the form of spines. Explain how this adaptation helps the cactus survive in a hot and dry environment. [2]

23. A group of students investigated the effect of light on the growth of two identical plants, Plant X and Plant Y.

Plant X was placed in a sunny spot.
Plant Y was placed in a dark cupboard. Both plants were given the same amount of water every day. After two weeks, the students observed the plants.

(a) Predict the appearance of Plant Y after two weeks. [1]

(b) Explain your answer in (a). [2]

24. The diagram below shows a classification key for five animals: A, B, C, D, and E.

Diagram for Q24 (P5 Science)

Generated diagram for Q24.

(a) Which animal is a mammal? [1] Answer: __________

(b) Animal E has an exoskeleton and 8 legs. Name the group of animals to which Animal E belongs. [1] Answer: __________

25. Read the passage below.

The mangrove tree grows in coastal areas where the soil is salty and muddy. The roots of the mangrove tree are often exposed above the mud. These specialized roots, called breathing roots, have small pores that allow the tree to take in air. The leaves of the mangrove tree have a thick waxy coating and can excrete excess salt through special glands.

(a) Why do mangrove trees need breathing roots? [2]

(b) How does the waxy coating on the leaves help the mangrove tree? [1]

26. The diagram below shows the life cycle of a cockroach.

Diagram for Q26 (P5 Science)

Generated diagram for Q26.

(a) Name the type of life cycle shown above. [1] Answer: __________

(b) State one difference between the nymph and the adult cockroach. [1]

27. The table below shows the number of legs and body parts for three different animals.

Animal	Number of Legs	Body Parts
X	6	3 (Head, Thorax, Abdomen)
Y	8	2 (Cephalothorax, Abdomen)
Z	Many	Many segments

(a) Identify the group of animals for X, Y, and Z. [3]

X: __________________________
Y: __________________________
Z: __________________________

(b) Which of these animals is an arachnid? [1] Answer: __________

28. The diagram below shows a simple food web in a forest.

Diagram for Q28 (P5 Science)

Generated diagram for Q28.

(a) Name one producer in the food web. [1] Answer: __________

(b) Name one animal that is both a predator and prey. [1] Answer: __________

Grasshoppers: _______________________________________________________
Snakes: ____________________________________________________________

29. Scientists discovered a new organism in the deep sea. It has the following characteristics:

It does not have chlorophyll.
It obtains nutrients by absorbing them from dead whales that sink to the ocean floor.
It reproduces by releasing spores.

(a) Is this organism a plant or a fungus? Give a reason for your answer. [2]

(b) Why is this organism important to the ecosystem? [1]

30. The diagram below shows two types of seeds, Seed A and Seed B.

Diagram for Q30 (P5 Science)

Generated diagram for Q30.

(a) How is Seed A likely dispersed? [1] Answer: __________

(b) Explain how the structure of Seed A helps in its dispersal. [2]

End of Paper

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Answers

TuitionGoWhere Exam Practice (AI) - Science Primary 5 Answer Key

Paper: SA2 Practice Paper (Version 2 of 5)
Topic Focus: Diversity

Section A (20 marks)

Q	Answer	Marks
1	2	1
2	3	1
3	2	1
4	2	1
5	3	1
6	2	1
7	3	1
8	2	1
9	3	1
10	2	1
11	4	1
12	1	1
13	2	1
14	2	1
15	3	1
16	1	1
17	3	1
18	2	1
19	1	1
20	2	1

Total for Section A: 20 marks

Section B (40 marks)

21. (a)

Animal P: Reptile [1]
Animal Q: Bird [1] (b) Animal S has moist skin which allows it to breathe (absorb oxygen) through the skin. [1] If the skin dries out, it cannot breathe effectively. [1] Also, amphibian eggs do not have hard shells and need water to prevent drying out. [Accept either reason focused on respiration or reproduction]. (c) The young are protected inside the mother's body, [1] which increases their chances of survival against predators and harsh environmental conditions. [1] (Note: Award 1 mark for a valid advantage such as protection or provision of nutrients).

22. (a) To make food for the plant through photosynthesis. [1] (b) Spines have a smaller surface area compared to broad leaves. [1] This reduces the amount of water lost through transpiration. [1] (c) To maximize the surface area exposed to sunlight [1] for photosynthesis.

23. (a) Plant Y will be yellow/pale and weak/spindly. [1] (b) Plant Y cannot perform photosynthesis in the dark because there is no light. [1] Without photosynthesis, it cannot make food (chlorophyll breaks down), so it turns yellow and cannot grow strongly. [1] (c) To ensure a fair test. [1] Water is a variable that affects plant growth, so it must be kept constant to ensure that only light affects the result.

24. (a) Animal A [1] (Has backbone and hair/fur) (b) Arachnids [1] (c) They have scales. [1] OR They lay eggs with leathery shells. [1] OR They are cold-blooded. [1]

25. (a) The soil in mangrove areas is muddy and waterlogged, which means there is little air/oxygen in the soil. [1] The breathing roots allow the tree to take in oxygen from the air above the mud for respiration. [1] (b) The waxy coating reduces water loss through transpiration. [1] (Note: While salt excretion is mentioned in the text, the waxy coating primarily prevents water loss. Accept "prevents excessive water loss" or "protects leaves from salt damage" if reasoned well). (c) It has prop roots/stilt roots that spread out widely to support the tree in the soft soil. [1]

26. (a) Incomplete metamorphosis [1] (b) The nymph does not have wings, while the adult has wings. [1] OR The nymph is smaller than the adult. (c) The exoskeleton is hard and does not grow. [1] The nymph must shed its old exoskeleton to allow its body to grow larger. [1]

27. (a)

X: Insect [1]
Y: Arachnid [1]
Z: Myriapod (or Centipede/Millipede) [1] (b) Y [1]

28. (a) Grass [1] (b) Snake [1] OR Bird [1] OR Frog [1] (Any animal that eats another and is eaten by another). (c)

Grasshoppers: The population will increase [1] because there are fewer frogs to eat them.
Snakes: The population will decrease [1] because one of their food sources (frogs) is gone. (Note: If students say snakes increase because they eat more birds, this is less likely in the short term as birds might also decrease due to competition or other factors, but the direct loss of a food source usually leads to a decrease. Award mark for logical reasoning based on food web dynamics).

29. (a) It is a fungus. [1] Because it does not have chlorophyll and cannot make its own food (it obtains nutrients from dead matter). [1] Plants have chlorophyll and make their own food. (b) It acts as a decomposer. [1] It breaks down dead organic matter and recycles nutrients back into the ecosystem.

30. (a) By wind [1] (b) Seed A has wing-like structures which increase its surface area. [1] This allows it to be caught by the wind and carried over long distances away from the parent plant. [1] (c) To reduce overcrowding and competition for resources (water, sunlight, nutrients) between the parent plant and the offspring. [1]

Total for Section B: 40 marks
Grand Total: 60 marks

Q	Answer	Marks
1	2	1
2	3	1
3	2	1
4	2	1
5	3	1
6	2	1
7	3	1
8	2	1
9	3	1
10	2	1
11	4	1
12	1	1
13	2	1
14	2	1
15	3	1
16	1	1
17	3	1
18	2	1
19	1	1
20	2	1

Q	Answer	Marks
1	2	1
2	3	1
3	2	1
4	2	1
5	3	1
6	2	1
7	3	1
8	2	1
9	3	1
10	2	1
11	4	1
12	1	1
13	2	1
14	2	1
15	3	1
16	1	1
17	3	1
18	2	1
19	1	1
20	2	1

Q	Answer	Marks
1	2	1
2	3	1
3	2	1
4	2	1
5	3	1
6	2	1
7	3	1
8	2	1
9	3	1
10	2	1
11	4	1
12	1	1
13	2	1
14	2	1
15	3	1
16	1	1
17	3	1
18	2	1
19	1	1
20	2	1