P5 Science Practice Worksheet

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Section A - Multiple Choice

A1.Which of these is NOT a role of the roots in a plant's transport system?[1]

(a)Absorbing mineral salts from the soil

(b)Making food using sunlight

(c)Absorbing water from the soil

(d)Anchoring the plant firmly in the soil

A2.For a bulb in a simple circuit to light up, what must the circuit form?[1]

(a)A loop with at least one gap in it

(b)A switch with no wires attached

(c)Two cells connected to the same bulb

(d)A complete, unbroken loop from one end of the cell to the other

A3.What is the main function of a flower's petals?[1]

(a)To absorb water for the plant

(b)To produce pollen

(c)To produce seeds directly

(d)To attract pollinators with colour and scent

A4.During a fever, a child's heart beats faster than usual even while resting. What is one likely reason for this?[1]

(a)The body is working harder to fight illness and needs more oxygen delivered to its cells

(b)Fever causes the lungs to stop taking in air

(c)A fever always means the heart is damaged

(d)A faster heartbeat during fever has no relation to oxygen needs

A5.Ryan notices that his potted plant's soil is soaking wet, yet the plant still looks wilted. What might be happening?[1]

(a)The stem is transporting too much food to the leaves

(b)The plant is receiving too much sunlight

(c)The plant has too little soil around its roots

(d)The roots may be damaged or waterlogged and unable to properly absorb and transport water

A6.A leaf is left in complete darkness for several weeks. Which change might a scientist expect to observe in its cells over time?[1]

(a)The chloroplasts may become fewer or less active since there is no light to use them

(b)The cells will develop a nucleus for the first time

(c)The cells will turn into animal cells

(d)The cell wall will disappear completely

A7.A toy car's series circuit (cell, switch, motor) works fine when the wheels are lifted off the ground and spun freely, but the wheels barely turn when the car is placed on a rough carpet. The bulb-style test on the same cell and wiring shows a bright, steady light. What does this tell us about the fault?[2]

(a)The motor has turned into an open circuit only on carpet

(b)The carpet must be acting as an insulator inside the electrical circuit

(c)There is likely no electrical fault at all; the difficulty is a mechanical one, since the circuit itself is clearly supplying current properly

(d)The cell stops supplying energy whenever the car touches carpet

A8.A group builds a series circuit with a cell, a switch, and two bulbs, one after another. Both bulbs are lit. They then remove one bulb entirely from its holder, leaving the socket empty and open. What happens, and why?[2]

(a)The remaining bulb is unaffected, because each bulb has an independent path

(b)The remaining bulb also goes out, because the empty socket leaves a gap in the single shared loop

(c)The cell automatically compensates and both positions stay lit

(d)The remaining bulb becomes brighter, because it now has the loop to itself

Section B - Short Answer

B1.Name the organ that pumps blood around the body.[1]

B2.Explain why ice, a solid, can be changed into water, a liquid.[2]

B3.Explain why your heart beats faster when you exercise.[2]

B4.A healthy green plant is placed in a dark cupboard for two weeks. Predict what will happen to the plant and explain why.[2]

B5.A flower is prevented from being visited by any insects, and no wind reaches it. Predict what will happen to its ability to produce seeds, and explain why.[2]

B6.A student says that sugar dissolving in water is the same as ice melting in water. Explain why this is incorrect.[2]

Section C - Structured

C1.A student compares a plant cell and an animal cell under a microscope.[3]

(a)Name ONE structure found in a plant cell but not in an animal cell.[1]

(b)Explain the function of the structure you named in (a).[2]

C2.Two identical wet cloths are hung outside to dry. Cloth A is in a sunny, windy spot. Cloth B is in a shady, still spot.[3]

(a)Which cloth dries faster?[1]

(b)Explain your answer using TWO different factors.[2]

C3.A gardener waters a plant. The water is absorbed by the roots and eventually reaches the leaves, where some of it is lost to the air.[4]

(a)Inside the stem are two kinds of tiny tubes. Describe what each of the two tubes carries, and in which direction.[2]

(b)Explain why water is lost from the leaves.[2]

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