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Primary 4 Science Systems Quiz
Free P4 Science Systems quiz, Ox AI version, with questions, answers, and syllabus-aligned practice for Singapore students.
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Questions
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Answers
Primary 4 Science Quiz – Systems: Answer Key (Version 1 of 5)
Answer 1.
(b) Root
Answer 2.
(c) Gullet
Answer 3.
(c) To transport water and food around the plant
Answer 4.
(b) Stomach
Answer 5.
(a) Leaves
Answer 6.
(c) Mouth
Answer 7.
(b) Large intestine
Answer 8.
(c) Stem
Answer 9.
(b) Small intestine
Answer 10.
(d) Fruit
Answer 11.
Root system and shoot system.
Answer 12.
- Hold/anchor the plant firmly in the ground.
- Absorb water and dissolved mineral salts from the soil.
Answer 13.
The teeth chew the food into smaller pieces, and the food is mixed with saliva (digestive juice), which begins digesting the food.
Answer 14.
- Transport water and mineral salts from the roots to the other parts of the plant.
- Transport food made by the leaves to the other parts of the plant (also holds the plant upright).
Answer 15.
Leaves make food for the plant. Without any leaves, the plant cannot make its own food, so it will eventually die.
Answer 16.
Mouth → gullet → stomach → small intestine → large intestine → anus.
Answer 17.
Its long, coiled shape gives more time and surface area for digestion to be completed and for digested food to be fully absorbed into the blood.
Answer 18.
The water was absorbed by the roots and travelled up the stem to the leaves. It then escaped from the leaves and collected as droplets inside the bag.
Answer 19.
In the small intestine, digestion is completed and digested food is absorbed into the blood. In the large intestine, only water is absorbed from the undigested food.
Answer 20.
Agree. Muscles in the wall of the gullet squeeze and push the food along towards the stomach, so food can move down even when upside down.