Question 1: What is the main purpose of photosynthesis?

Answer: To produce glucose and oxygen

Question 2: Which gas is used by plants during photosynthesis?

Answer: Carbon dioxide

Question 3: True or False: Photosynthesis occurs only in the leaves of plants.

Answer: False

Question 4: True or False: Chlorophyll is essential for photosynthesis because it absorbs sunlight.

Answer: True

Question 5: Explain what happens during the light-dependent reactions of photosynthesis.

Answer: Light energy is absorbed by chlorophyll, splitting water molecules and releasing oxygen.

Question 6: Briefly describe the role of stomata in photosynthesis.

Answer: Stomata allow the exchange of gases; they let carbon dioxide in and release oxygen.

Question 7: What are the products of the light-independent reactions (Calvin Cycle)?

Answer: Glucose and other carbohydrates

Question 8: Calculate the amount of oxygen produced if a plant uses 6 molecules of carbon dioxide in photosynthesis. Use the formula: 6CO2 + 6H2O -> C6H12O6 + 6O2.

Answer: 6 molecules of oxygen

Question 9: Match the following components with their roles in photosynthesis:

Answer: See full answer key

Question 10: Order the steps in the process of photosynthesis:

Answer: See full answer key

Question 11: Fill in the blank: The primary pigment involved in photosynthesis is __________.

Answer: chlorophyll

Question 12: Discuss the importance of photosynthesis in maintaining the balance of oxygen and carbon dioxide in the atmosphere. Include the impact on global ecosystems.

Answer: Photosynthesis is crucial as it converts carbon dioxide into oxygen, supporting life on Earth. It balances atmospheric gases and supports food chains, making it vital for ecosystems.