1. Which of the following statements regarding scientific studies is true?

a. Once a study is conducted, the results can never be changed.

b. Scientific study must be repeatable, so the data is collected in a reliable way.

c. It does not matter if the results of a study remain the same or change with each test.

d. Scientists create explanations based on belief, even when results do not support them.

2. Paragraphs 4, 5, and 6 discuss the transport of water in the coastal

redwoods. Which of the following statements regarding the transport of water in trees is false?

a. Water only moves in one direction in trees, from the roots to the needles.

b. Water is pulled up the tree due to evaporation in the needles.

c. The rate of water flow in a tree does not matter.

d. It requires a lot of energy for the trees to move water.

3. What property of water enables it to make the journey from the roots to the

leaves?

a. The fact that it is a liquid

b. The fact that it is cohesive

c. The fact that it has the ability to flow in any direction

d. The fact that it is found in the ground

4. Why are coastal redwoods only found on the coast of northern California?

a. They have been logged everywhere else.

b. There is no competition from other pine trees.

c. Their seeds cannot germinate anywhere else.

d. They have adaptations that perfectly fit the microclimate there.

5. Recent studies looked at how fog may play a role in the water transport

of the coastal redwoods. Which is true?

a. The fog helps to replenish vital ground water.

b. The fog lowers the evaporation rate at the needles.

c. The fog can decrease the energy demand of the trees.

d. All of the above

6. How did the study of coastal fog help scientists to better understand water

transport in coastal redwoods?

a. It changed the way the scientists understood the water transportation

mechanisms in these trees.

b. It told the scientists exactly how water is transported in these trees.

c. It did not change their understanding of the water transportation

mechanisms in these trees.

d. It told the scientists that they had been wrong about the water

transport systems.