Introduction to Photosynthesis

Labelling

Label the inputs and outputs for photosynthesis.

Drag labels to their correct position on the image

oxygen

glucose

light energy

carbon dioxide

water

Multiple Choice

What is the process by which plants, algae, and some bacteria convert carbon dioxide and water into glucose and oxygen using light energy?

• Photosynthesis

• Respiration

• Transpiration

• Fermentation

Multiple Select

Describe the transport vessels found in plants: Water is absorbed by the ___ of the plant. It is transported up through the plant by the ___ vessel. The glucose that is produced is moved up and down the plant to other tissues by the ___ vessel.

• roots

• xylem

• phloem

• leaves

Multiple Choice

Photosynthesis is used to produce food for plants in the form of glucose. In the process, oxygen is released. As shown in the diagram, plants require water and carbon dioxide (from the air). What else is required for photosynthesis and what role does it play?

• Light is required to provide energy for photosynthesis.

• ATP is required as an energy source for photosynthesis.

• Glucose is required as an energy source for photosynthesis

• Oxygen is required to split water molecules in photosynthesis.

Multiple Choice

Which process is best illustrated by the diagram?

• Cellular respiration

• Digestion

• Photosynthesis

• Fermentation

Multiple Choice

At approximately which wavelength does chlorophyll a absorb most light?

• 660 nm
• 640 nm
• 455 nm
• 425 nm

Multiple Choice

As the intensity of light increases, the rate of photosynthesis will...

• steadily increase

• increase exponentially

• increase, then level off, then decrease

• decrease at first, then increase

Multiple Choice

What happens to the rate of photosynthesis as the temperature reaches the optimum temperature of the enzymes?

• It increases

• It decreases

• It remains the same

• It stops completely

Poll

How confident do you feel about this topic now?

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• Somewhat confident
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