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6 Class 9 Biology questions with answers and explanations.
Printable worksheet with answer key
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In plants, water is carried upwards by the:
- 1 Phloem
- 2 Xylem
- 3 Epidermis
- 4 Cambium
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Correct answer: Xylem
Xylem carries water and minerals from roots to leaves.
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The loss of water vapour from leaves is called:
- 1 Transpiration
- 2 Respiration
- 3 Absorption
- 4 Translocation
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Correct answer: Transpiration
Transpiration is evaporation of water from leaf surfaces, mostly through stomata.
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Which blood vessels carry blood away from the heart?
- 1 Capillaries
- 2 Arteries
- 3 Veins
- 4 Lymph vessels
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How many chambers does the human heart have?
- 1 Four
- 2 Three
- 3 Five
- 4 Two
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Which blood cells carry oxygen?
- 1 White blood cells
- 2 Plasma cells
- 3 Platelets
- 4 Red blood cells
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Correct answer: Red blood cells
Red blood cells contain haemoglobin that binds oxygen.
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Blood clotting depends on:
- 1 Red blood cells
- 2 Lymph
- 3 Platelets
- 4 Haemoglobin