Class 7 – Transportation in Animals and Plants Practice Paper

Section A – Multiple Choice Questions (20 × 1 = 20 Marks)

1. Which organ pumps blood throughout the human body?
   a) Brain
   b) Heart
   c) Kidney
   d) Lungs

2. What is the normal pulse rate in humans?
   a) 40–50 per minute
   b) 60–70 per minute
   c) 70–80 per minute
   d) 90–100 per minute

3. Which pigment in red blood cells carries oxygen?
   a) Chlorophyll
   b) Haemoglobin
   c) Myoglobin
   d) Plasma

4. Which blood component fights germs?
   a) Plasma
   b) Red blood cells
   c) White blood cells
   d) Platelets

5. Which blood component forms clots?
   a) Plasma
   b) Platelets
   c) RBC
   d) WBC

6. Which blood vessels carry blood away from the heart?
   a) Veins
   b) Arteries
   c) Capillaries
   d) None

7. Veins contain ______ to prevent backflow of blood.
   a) Valves
   b) RBC
   c) Plasma
   d) Muscles

8. Which artery carries deoxygenated blood?
   a) Pulmonary artery
   b) Aorta
   c) Carotid artery
   d) Renal artery

9. Which vein carries oxygenated blood?
   a) Vena cava
   b) Jugular vein
   c) Pulmonary vein
   d) Coronary vein

10. Which is the largest artery in the human body?
    a) Pulmonary artery
    b) Aorta
    c) Vena cava
    d) Carotid artery

11. What is the rhythmic throbbing of arteries called?
    a) Heartbeat
    b) Pulse
    c) Circulation
    d) Respiration

12. Which instrument is used to hear heartbeat?
    a) Microscope
    b) Telescope
    c) Stethoscope
    d) X-ray machine

13. The main excretory product in humans is:
    a) Ammonia
    b) Urea
    c) Uric acid
    d) Carbon dioxide

14. Which organ stores urine?
    a) Kidney
    b) Urethra
    c) Urinary bladder
    d) Heart

15. Which animals excrete ammonia?
    a) Birds
    b) Snakes
    c) Aquatic animals
    d) Lizards

16. Which vascular tissue transports water in plants?
    a) Phloem
    b) Xylem
    c) Stomata
    d) Root hairs

17. The movement of food in plants is called:
    a) Transpiration
    b) Translocation
    c) Respiration
    d) Photosynthesis

18. Which pores in leaves control transpiration?
    a) Lenticels
    b) Stomata
    c) Chloroplasts
    d) Root hairs

19. Which animals do not have a circulatory system?
    a) Hydra and sponges
    b) Humans
    c) Snakes and lizards
    d) Fish

20. Dialysis is required when:
    a) Lungs fail
    b) Heart stops
    c) Kidneys fail
    d) Liver is damaged

Section B – Assertion and Reasoning (4 × 2 = 8 Marks)

Q1. Assertion: Arteries have thick walls.
Reason: Blood pressure is high in arteries.

Q2. Assertion: Pulmonary vein carries deoxygenated blood.
Reason: All veins carry deoxygenated blood.

Q3. Assertion: Transpiration helps in cooling plants.
Reason: Evaporation of water absorbs heat from plants.

Q4. Assertion: Blood plasma transports nutrients.
Reason: Plasma is made up of water, salts, and proteins.

Section C – True/False (6 × 1 = 6 Marks)

1. Platelets fight against germs. ( )

2. Birds excrete uric acid. ( )

3. Vena cava is the largest vein. ( )

4. Xylem transports food in plants. ( )

5. Sweat helps in regulating body temperature. ( )

6. Sponges do not have a circulatory system. ( )

Section D – Short Answer Questions (5 × 2 = 10 Marks)

1. Write two functions of blood.

2. Define pulse rate.

3. Name four components of blood.

4. What is dialysis?

5. Why do plants need a transport system?

Section E – Long Answer Questions (3 × 4 = 12 Marks)

1. Explain the structure and function of the human heart.

2. Describe the excretory system in humans with a neat diagram.

3. Differentiate between Xylem and Phloem.

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