Understanding Photosynthesis

What is the definition of photosynthesis?

• Photosynthesis is the process by which organisms convert light energy into chemical energy.

• Photosynthesis is the process of converting chemical energy into light energy.

• Photosynthesis is the breakdown of glucose to release energy.

• Photosynthesis occurs only in animals during the night.

What are the two main phases of photosynthesis?

• Photosynthesis and respiration

• Light absorption and energy storage

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

• Chlorophyll activation and glucose production

Why is photosynthesis important for plants?

• Photosynthesis is a process that occurs only at night.

• Photosynthesis is important for plants because it produces the energy they need to grow and thrive.

• Photosynthesis allows plants to produce flowers and fruits.

• Photosynthesis helps plants absorb water from the soil.

How does photosynthesis benefit animals and humans?

• Photosynthesis provides oxygen for respiration and glucose for energy, benefiting animals and humans.

• Photosynthesis is only beneficial for plants.

• Photosynthesis creates heat energy for animals.

• Photosynthesis produces carbon dioxide for animals.

What factors can affect the rate of photosynthesis?

• Soil pH levels

• Light intensity, carbon dioxide concentration, temperature, and water availability.

• Humidity levels

• Wind speed

How does light intensity influence photosynthesis?

• Higher light intensity increases the rate of photosynthesis up to a saturation point.

• Photosynthesis only occurs in complete darkness.

• Light intensity has no effect on photosynthesis rates.

• Higher light intensity decreases the rate of photosynthesis.

What role does carbon dioxide play in photosynthesis?

• Carbon dioxide is a byproduct of photosynthesis.

• Carbon dioxide is used to absorb sunlight during photosynthesis.

• Carbon dioxide is a reactant in photosynthesis, used to produce glucose and oxygen.

• Carbon dioxide is not involved in the process of photosynthesis.

How does temperature affect the process of photosynthesis?

• Temperature has no effect on photosynthesis.

• Temperature affects photosynthesis by influencing enzyme activity and gas exchange, with optimal temperatures increasing the rate and extreme temperatures decreasing it.

• Higher temperatures always enhance photosynthesis regardless of other factors.

• Photosynthesis only occurs at a constant temperature of 25°C.