Understanding Photosynthesis

What is the primary purpose of photosynthesis?

• To produce oxygen for respiration.

• To absorb carbon dioxide from the atmosphere.

• To store energy in the form of fat.

• The primary purpose of photosynthesis is to convert light energy into chemical energy in the form of glucose.

Which organelle in plant cells is responsible for photosynthesis?

• Chloroplasts

• Endoplasmic reticulum

• Ribosomes

• Mitochondria

What are the two main stages of photosynthesis?

• Light absorption and energy storage

• Photosynthesis and respiration

• Chlorophyll activation and glucose production

• Light-dependent reactions and light-independent reactions (Calvin cycle)

What is the role of chlorophyll in photosynthesis?

• Chlorophyll converts carbon dioxide into glucose.

• Chlorophyll absorbs light energy for photosynthesis.

• Chlorophyll releases oxygen during photosynthesis.

• Chlorophyll is responsible for water absorption.

What are the reactants needed for photosynthesis?

• Oxygen and glucose

• Hydrogen and minerals

• Carbon dioxide and water

• Nitrogen and sunlight

What are the products of the photosynthesis process?

• Oxygen and carbon dioxide

• Nitrogen and glucose

• Glucose and oxygen

• Carbon dioxide and water

How does light intensity affect the rate of photosynthesis?

• Photosynthesis occurs only in complete darkness.

• Light intensity has no effect on photosynthesis.

• Light intensity positively affects the rate of photosynthesis up to a saturation point.

• Higher light intensity always decreases photosynthesis rates.

What is the significance of water in the photosynthesis process?

• Water is crucial for providing electrons and protons in photosynthesis.

• Water is used to store energy in photosynthesis.

• Water absorbs sunlight during photosynthesis.

• Water is a byproduct of photosynthesis.

How do plants adapt to different light conditions for photosynthesis?

• Plants adapt to different light conditions by changing leaf orientation, size, shape, chlorophyll content, and developing specialized leaf types.

• Plants do not adapt to light conditions and rely solely on water availability.

• Plants change their root structure to adapt to light conditions.

• Plants only grow in direct sunlight and cannot survive in shade.

What is the impact of photosynthesis on the Earth's atmosphere?

• Photosynthesis decreases oxygen levels and increases carbon dioxide in the Earth's atmosphere.

• Photosynthesis has no effect on the Earth's atmosphere.

• Photosynthesis only affects the temperature of the Earth's atmosphere.

• Photosynthesis increases oxygen levels and reduces carbon dioxide in the Earth's atmosphere.