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Science Quiz - Plant Organs 01 (Questions)

Plants have organs too. In KS3 Science, pupils learn how roots, stems, and leaves each play a role in keeping plants alive, growing, and reproducing successfully.

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Fascinating Fact:

Giant water lilies have leaves so big and strong that they can hold the weight of a small child.

In KS3 Science, plant organs are studied to understand how different parts of a plant work together. Roots absorb water, stems transport it, and leaves carry out photosynthesis.

Key Terms

Photosynthesis: The process where plants make food using sunlight, carbon dioxide, and water.
Root: The organ that anchors the plant and absorbs water and nutrients from the soil.
Stem: The organ that supports the plant and transports water, nutrients, and food.

Frequently Asked Questions (Click to see answers)

What are the main plant organs studied in KS3 Science?

The main plant organs are roots, stems, and leaves. These organs work together to absorb water, transport nutrients, and produce food for the plant.

Why are leaves important for plants?

Leaves are important because they carry out photosynthesis, making food for the plant using sunlight, water, and carbon dioxide.

How do roots help a plant survive?

Roots anchor the plant in the soil and absorb water and minerals. They are vital for the plant’s stability and growth.

Try These Related Quizzes

1.

Which organ is used in pollination?

[ ]	Flower
[ ]	Leaf
[ ]	Root
[ ]	Stem

2.

Which organ is used in photosynthesis?

[ ]	Flower
[ ]	Leaf
[ ]	Root hair
[ ]	Root tip

3.

Which organ is used to absorb water?

[ ]	Leaf
[ ]	Root hair
[ ]	Root tip
[ ]	Stem

4.

Which two substances are used in photosynthesis?

[ ]	Carbon dioxide and oxygen
[ ]	Carbon dioxide and water
[ ]	Oxygen and glucose
[ ]	Oxygen and water

5.

Which two substances are produced in photosynthesis?

[ ]	Carbon dioxide and water
[ ]	Glucose and carbon dioxide
[ ]	Oxygen and carbon dioxide
[ ]	Oxygen and glucose

6.

Photosynthesis does not occur in roots because .......

[ ]	Root hair cells absorb water
[ ]	Root hair cells do not have chloroplasts
[ ]	Roots anchor plants in soil
[ ]	Roots are used to transport water

7.

Energy for photosynthesis comes from .......

[ ]	Glucose
[ ]	Oxygen
[ ]	Sunlight
[ ]	Water

8.

What colour is chlorophyll?

[ ]	Brown
[ ]	Green
[ ]	Red
[ ]	White

9.

Plants make their own food. This is stored as what?

[ ]	Fat
[ ]	Glucose
[ ]	Protein
[ ]	Starch

10.

Nitrates provide nitrogen. This is important for what?

[ ]	Good roots
[ ]	Green leaves
[ ]	Purple flowers
[ ]	Yellow flowers

Science Quiz - Plant Organs 01 (Answers)

1.

Which organ is used in pollination?

[x]	Flower
[ ]	Leaf
[ ]	Root
[ ]	Stem

Flowers often contain nectar and some give off a scent in order to attract insects

2.

Which organ is used in photosynthesis?

[ ]	Flower
[x]	Leaf
[ ]	Root hair
[ ]	Root tip

Photosynthesis means making (synthesis) through light (photo)

3.

Which organ is used to absorb water?

[ ]	Leaf
[x]	Root hair
[ ]	Root tip
[ ]	Stem

96% of a cucumber is water

4.

Which two substances are used in photosynthesis?

[ ]	Carbon dioxide and oxygen
[x]	Carbon dioxide and water
[ ]	Oxygen and glucose
[ ]	Oxygen and water

Carbon dioxide enters through stomata (small holes) on the underside of a leaf

5.

Which two substances are produced in photosynthesis?

[ ]	Carbon dioxide and water
[ ]	Glucose and carbon dioxide
[ ]	Oxygen and carbon dioxide
[x]	Oxygen and glucose

Oxygen leaves through the stomata

6.

Photosynthesis does not occur in roots because .......

[ ]	Root hair cells absorb water
[x]	Root hair cells do not have chloroplasts
[ ]	Roots anchor plants in soil
[ ]	Roots are used to transport water

They are usually underground organs so little or no light reaches them anyway

7.

Energy for photosynthesis comes from .......

[ ]	Glucose
[ ]	Oxygen
[x]	Sunlight
[ ]	Water

When plants don't get enough light, they can't make enough food and they become weakened and can die

8.

What colour is chlorophyll?

[ ]	Brown
[x]	Green
[ ]	Red
[ ]	White

It is why most plants look green

9.

Plants make their own food. This is stored as what?

[ ]	Fat
[ ]	Glucose
[ ]	Protein
[x]	Starch

You can test for starch in a leaf by using iodine

10.

Nitrates provide nitrogen. This is important for what?

[ ]	Good roots
[x]	Green leaves
[ ]	Purple flowers
[ ]	Yellow flowers

Nitrates are also used to make proteins for growth