Y10 - 4.4 Revision - Mid topic

What is the chemical formula for glucose?

• C₁₂H₂₂O₁₁

• C₆H₁₂O₆

• CO₂

• H₂O

Which gas is essential for photosynthesis?

• hydrogen (H₂)

• carbon dioxide (CO₂)

• nitrogen (N₂)

• oxygen (O₂)

What is the main function of chloroplasts in plant cells?

• to carry out photosynthesis

• to provide structural support

• to store genetic information

• to transport water

Which part of the plant leaf contains the most chloroplasts?

• the cuticle

• The palisade mesophyll

• the spongy mesophyll

• the stomata

How does carbon dioxide enter the plant leaves?

• through the cuticle

• through the roots

• through the stomata

• through the veins

What is the main product of photosynthesis?

• carbon dioxide

• glucose

• oxygen

• water

What does it mean when a factor is described as a limiting factor?

• it enhances the rate of photosynthesis when in short supply

• it has no effect on photosynthesis

• it slows down or limits the rate of photosynthesis when in short supply

• it stops the process of photosynthesis

Which of the following are not limiting factors of photosynthesis?

• oxygen concentration

• carbon dioxide concentration

• light intensity

• chlorophyll availability

What occurs when light intensity reaches optimum levels in photosynthesis?

• the rate of photosynthesis decreases

• photosynthesis stops completely

• the rate of photosynthesis no longer increases

• the rate of photosynthesis increases indefinitely

What is the relationship between temperature and the rate of photosynthesis?

• temperature has no effect on the rate of photosynthesis

• the rate decreases with temperature

• the rate increases with temperature until enzymes denature

• the rate remains constant with temperature changes