Understanding Photosynthesis

What is the primary function of photosynthesis?

• To absorb carbon dioxide from the atmosphere.

• To provide energy for cellular respiration.

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

• To release oxygen as a waste product.

Which organisms are known to perform photosynthesis?

• Fungi, viruses, and mammals

• Plants, algae, and certain bacteria (e.g., cyanobacteria) perform photosynthesis.

• Insects, reptiles, and fish

• Mushrooms, worms, and protozoa

What are the main products of photosynthesis?

• Oxygen and carbon dioxide

• Nitrogen and glucose

• Glucose and oxygen

• Carbon dioxide and water

What role does chlorophyll play in photosynthesis?

• Chlorophyll absorbs light energy for photosynthesis.

• Chlorophyll acts as a nutrient for plant growth.

• Chlorophyll converts carbon dioxide into glucose.

• Chlorophyll releases oxygen during photosynthesis.

In which part of the plant does photosynthesis primarily occur?

• Stems

• Flowers

• Leaves

• Roots

What are the two main stages of photosynthesis?

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

• Light absorption and energy storage

• Chlorophyll activation and oxygen release

• Photosynthesis and respiration

How does light intensity affect the rate of photosynthesis?

• Light intensity has no effect on photosynthesis rates.

• Photosynthesis only occurs in complete darkness.

• Higher light intensity decreases the rate of photosynthesis.

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

What is the chemical equation for photosynthesis?

• 6CO2 + 6H2O + light energy -> C6H12O6 + 6O2

• 6CO2 + 6H2O -> C6H12O6 + 6O2 + light energy

• C6H12O6 + 6O2 -> 6CO2 + 6H2O + energy

• 6O2 + light energy + C6H12O6 -> 6CO2 + 6H2O

How do environmental factors influence photosynthesis?

• Photosynthesis only occurs in the presence of soil nutrients.

• Photosynthesis is unaffected by environmental conditions.

• Higher temperatures always increase photosynthesis rates.

• Environmental factors such as light, carbon dioxide, temperature, and water availability significantly influence the rate of photosynthesis.

What is the significance of photosynthesis to the ecosystem?

• Photosynthesis is crucial for energy production, oxygen generation, and carbon dioxide regulation in ecosystems.

• Photosynthesis decreases the amount of oxygen in the atmosphere.

• Photosynthesis produces harmful pollutants for the ecosystem.

• Photosynthesis is only important for animal life.