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Quiz Chapter 3: Transportation

10 questions ยท Form 3 Science Bab 3: Transportation

Question 1 of 10Score: 0

What happens if a person with blood group O receives a blood transfusion from a donor with blood group A?

Full Question List & Answer Key

Prefer reading to quizzing? All 10 questions are listed below with the answer and explanation under each one.

1. What happens if a person with blood group O receives a blood transfusion from a donor with blood group A?

  1. Nothing happens because O is a universal recipient
  2. Anti-A antibodies in group O plasma agglutinate (clump) the donor's group A red blood cells
  3. Anti-B antibodies in group O plasma destroy all platelets in group A blood
  4. Group A red blood cells change into group O cells immediately
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Answer: B

Group O plasma contains both Anti-A and Anti-B antibodies. Giving group A blood causes Anti-A antibodies to bind and clump the donor's A antigens.

2. Which material reinforces and thickens xylem vessel walls, providing structural rigidity to plants?

  1. Lignin
  2. Starch
  3. Chitin
  4. Pectin
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Answer: A

Lignin deposits in xylem vessel walls strengthen the tubes and prevent them from collapsing under negative pressure.

3. Which blood vessel carries oxygenated blood from the lungs back to the left atrium of the heart?

  1. Pulmonary artery
  2. Pulmonary vein
  3. Aorta
  4. Vena cava
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Answer: B

The pulmonary vein is an exception among veins because it carries oxygen-rich blood from the lungs to the left atrium.

4. What structural feature distinguishes veins from arteries?

  1. Veins have thicker muscular walls than arteries
  2. Veins possess internal valves to prevent blood backflow
  3. Veins carry blood away from the heart under high pressure
  4. Veins have walls that are only one cell thick
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Answer: B

Veins carry low-pressure blood toward the heart and contain internal valves along their length to prevent backflow.

5. Which heart valve separates the left atrium from the left ventricle?

  1. Tricuspid valve
  2. Bicuspid (Mitral) valve
  3. Semilunar valve
  4. Aortic valve
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Answer: B

The bicuspid valve (mitral valve) is located between the left atrium and left ventricle.

6. Which environmental factor speeds up the transpiration rate when its value increases?

  1. Air humidity
  2. Wind speed
  3. Carbon dioxide concentration
  4. Atmospheric pressure
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Answer: B

Increased wind speed blows away water vapor accumulating near leaf stomata, maintaining a steep concentration gradient for faster evaporation.

7. Why do simple unicellular organisms like Amoeba sp. not require a complex transport system?

  1. They have a small surface area-to-volume ratio
  2. They have a large surface area-to-volume ratio allowing rapid direct diffusion
  3. They do not require oxygen for survival
  4. Their outer membrane is impermeable to water and nutrients
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Answer: B

Simple unicellular organisms have a large SA/V ratio, allowing nutrients and oxygen to diffuse quickly and directly across their cell membrane.

8. What is the term given to the transport of soluble organic products of photosynthesis through phloem tissue?

  1. Transpiration
  2. Translocation
  3. Osmosis
  4. Guttation
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Answer: B

Translocation is the process by which phloem tissue transports dissolved organic sugars from source leaves to sink tissues.

9. How does an increase in relative air humidity affect the rate of transpiration in plants?

  1. It increases the transpiration rate drastically
  2. It decreases the transpiration rate
  3. It has no impact on transpiration
  4. It forces guard cells to open permanently
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Answer: B

High humidity means the surrounding air is already saturated with water vapor, decreasing the concentration gradient and lowering transpiration rate.

10. How many heart chambers are present in the circulatory system of a adult frog?

  1. 2 chambers (1 atrium, 1 ventricle)
  2. 3 chambers (2 atria, 1 ventricle)
  3. 4 chambers (2 atria, 2 ventricles)
  4. 1 chamber
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Answer: B

Amphibians like frogs have a 3-chambered heart consisting of two atria and a single shared ventricle.

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