TOPIC 7 - Photosynthesis Quiz

What are photoautotrophs?

• Organisms that rely on other organisms for energy

• Organisms that create their own energy source via photosynthesis

• Organisms that consume chemical energy

• Organisms that do not require energy

What is the main product of photosynthesis?

• Oxygen

• Carbon dioxide

• Glucose

• Water

How does CO₂ enter the leaf during photosynthesis?

• Through the roots

• Through the stomata

• Through the stem

• Through the chlorophyll

What are the two main stages of photosynthesis?

• Light-dependent reaction and light-independent reaction

• Glycolysis and Krebs cycle

• Electron transport chain and fermentation

• Calvin cycle and citric acid cycle

Which cells in the leaves are primarily responsible for carrying out photosynthesis?

• Epidermal cells

• Mesophyll cells

• Root cells

• Guard cells

What is the primary function of the flat shape of leaves?

• To reduce water loss

• To provide a large surface area for sunlight

• To protect against herbivores

• To store nutrients

Why is the presence of internal air spaces in leaves important?

• To store oxygen

• To aid diffusion of CO₂ into leaf tissue

• To prevent water loss

• To support the leaf structure

What structure within the chloroplast is responsible for photosynthesis and is surrounded by a double membrane?

• Mitochondria

• Chloroplast

• Nucleus

• Ribosome

Where does the light-dependent reaction occur in the chloroplast?

• Stroma

• Thylakoids

• Cytoplasm

• Nucleus

What is the space between the grana in a chloroplast called?

• Matrix

• Cytosol

• Stroma

• Lumen