Worksheet Chapter 3: Transportation

1. True or False: Xylem vessels are composed of living cells that transport sugars downwards from leaves to roots.

2. Predict how high wind speed and low relative humidity affect the rate of transpiration in a plant, and explain the underlying mechanism.

3. Which blood vessel carries deoxygenated blood from the right ventricle of the heart directly to the lungs?

4. Trace the path of oxygenated blood starting from the moment it leaves the lungs until it reaches tissue capillaries in the lower leg.

5. Fill in the blank: The human circulatory system is classified as a closed ____________ circulatory system because blood passes through the heart twice during one complete circuit.

6. Explain why a person with blood group O is known as a universal donor, but can only receive blood from another group O individual.

7. Compare the functions and structural properties of xylem and phloem in vascular plants.

8. True or False: Arteries have thinner muscular walls and wider lumens compared to veins.

9. List two structural differences between arteries and veins.

10. An individual with blood group A requires an emergency blood transfusion. Identify which donor blood groups are compatible, explain the role of plasma antibodies in determining compatibility, and state what happens if incompatible group B blood is transfused.