Untitled Lesson

Multiple Choice

Which of the following best describes the theme of interaction and interdependence in the context of photosynthesis?

• Photosynthesis allows plants to produce oxygen, which animals need to survive.

• Photosynthesis is a process that only benefits plants and not other organisms.

• Photosynthesis decreases the amount of carbon dioxide in the atmosphere, harming the environment.

• Photosynthesis is unrelated to the interactions between living things.

Open Ended

Why is photosynthesis considered essential for life on Earth?

Open Ended

How do abiotic factors interact with photosynthesis?

Open Ended

How is energy from sunlight absorbed and used in photosynthesis?

Open Ended

Explain how the glucose produced by photosynthesis is used in living organisms.

Fill in the Blanks

The process by which light energy is converted into chemical energy in the form of carbon compounds is called

.

Multiple Choice

Which of the following processes describes the transformation of light energy to chemical energy in photosynthesis?

• Conversion of glucose to carbon dioxide

• Transformation of light energy to chemical energy when carbon compounds are produced

• Absorption of water by roots

• Release of nitrogen by plants

Open Ended

Explain how the process of photosynthesis contributes to the transfer of energy in an ecosystem, using the food web as an example.

Multiple Choice

Which organisms are responsible for supplying most of the chemical energy needed for life processes in ecosystems, according to the food web diagram?

• Plants

• Hawks

• Spiders

• Shrews

Open Ended

Describe the role of photolysis in the process of photosynthesis.

Multiple Choice

Which of the following are products of photosynthesis?

• Glucose and oxygen

• Carbon dioxide and water

• Glucose and carbon dioxide

• Oxygen and water

Fill in the Blanks

Fill in the blank: The word equation for photosynthesis is carbon dioxide + water +

→ glucose + oxygen.

Multiple Choice

Which types of organisms produce oxygen as a by-product of photosynthesis?

• Plants, algae, and cyanobacteria

• Only plants

• Only algae

• Only cyanobacteria

Multiple Choice

Which pigments can be separated and identified using chromatography in leaves?

• Chlorophyll, Carotene, Xanthophyll

• Only Chlorophyll

• Only Carotene

• Only Xanthophyll

Fill in the Blanks

State the formula for calculating the Rf value for pigments on a chromatography paper.

Open Ended

Explain how chromatography can be used to separate and identify photosynthetic pigments in leaves.

Multiple Select

Which of the following steps are required to calculate the Rf value in chromatography?

• Measure distance travelled by pigment

• Measure distance travelled by solvent front

• Divide distance travelled by pigment by distance travelled by solvent front

• Measure the mass of the pigment

Fill in the Blanks

Leaves appear green because chlorophyll

green light.

Open Ended

Describe the process by which photosynthetic pigments absorb specific wavelengths of light and how this relates to their molecular structure.

Open Ended

Identify the wavelengths of light that chlorophyll absorbs best.

Multiple Choice

Which of the following statements best describes the difference between absorption and action spectra?

• Absorption spectra show the wavelengths absorbed by pigments, while action spectra show the rate of photosynthesis at each wavelength.

• Absorption spectra show the rate of photosynthesis, while action spectra show the wavelengths absorbed by pigments.

• Both absorption and action spectra show only the wavelengths reflected by pigments.

• Absorption spectra and action spectra are identical.

Open Ended

Compare and contrast the action spectrum of the leaf to the absorption spectrum of chlorophyll molecules.

Fill in the Blanks

Peaks for the action and absorption spectrum are for

and red light, with green light having the lowest levels.

Multiple Select

Which of the following are methods to measure the rate of photosynthesis?

• Measuring oxygen production

• Measuring carbon dioxide consumption

• Measuring glucose production

• Measuring leaf temperature

Open Ended

Outline how the rate of photosynthesis can be measured.

Open Ended

How do you think the study of photosynthesis helps us understand the interaction and interdependence of living organisms?

Open Ended

What questions do you still have about photosynthesis or the interaction and interdependence of molecules in this process?