Photosynthesis OST Biology

1. Part A Only

• A
• B
• C
• D

2. Part B Only. Which graph shows the relationship between the rate of photosynthesis and light intensity? Rate of photosynthesis is on the Y axis, light intensity is on the X axis.

• A
• B
• C

3.

• A
• B
• C
• D

4.

• A
• B
• C
• D

5. Read through the problem described below. Which of the following outcomes is most likely to occur based on the experimental conditions?

• A The lower the mass and the smaller the distance, the more Carbon Dioxide will be produced.
• B The lower the mass and the higher the distance, the more Carbon Dioxide will be produced.
• C The higher the mass and the higher the distance, the more Oxygen will be produces.
• D The higher the mass and the smaller the distance, the more Oxygen will be produced.

6.

• A
• B
• C
• D

7.

• A
• B
• C
• D

8. Part A Students in a biology class conduct an experiment to determine the effect of temperature on the rate of photosynthesis in a plant. They place a plant into a tube filled with water. Then, the students place the test tube under a light and slowly increase the temperature of the water. They record their results and display them on a graph as shown. Which statement is supported by the data in the graph?

• A The rate of oxygen production is lowest in section M
• B The rate of oxygen production is greatest in section M
• C The production of water molecules is greatest in section L
• D The number of carbon dioxide molecules is greatest in section K.

9. Part B Students in a biology class conduct an experiment to determine the effect of temperature on the rate of photosynthesis in a plant. They place a plant into a tube filled with water. Then, the students place the test tube under a light and slowly increase the temperature of the water. They record their results and display them on a graph as shown. Which statement explains the effect of temperature on the rate of photosynthesis?

• A Oxygen molecules break down at temperatures above 25 degrees C
• B The rate of photosynthesis is unaffected by the temperature of the water
• C The number of chloroplasts in the cell decreases as temperature increases
• D Enzymes involved with plant photosynthesis are disrupted at temperatures above 25 degrees C

In an experiment to observe the effects of light intensity on the growth of aquatic plants, which of the following predictions is most accurate?

• A Higher light intensity will decrease the plant's growth rate due to overexposure.

• B Light intensity has no significant effect on the growth of aquatic plants.

• C Higher light intensity will increase the plant's growth rate up to a certain point, after which it will have no additional effect.

• D Lower light intensity will increase the plant's growth rate by stimulating chlorophyll production.