Photosynthesis audio listen

What are the three things plants need to perform photosynthesis?

• Soil, water, and sunlight

• Carbon dioxide, water, and sunlight

• Oxygen, water, and sunlight

• Carbon dioxide, soil, and sunlight

What is the process called where plants use energy from light to make their own food source?

• Respiration

• Photosynthesis

• Digestion

• Fermentation

Plants are called ________ because they can use energy from light to synthesize their own food source.

• autotrophs

• heterotrophs

• saprophytes

• parasites

During respiration, animals inhale all of the gases in the atmosphere, but the only gas that is retained and not immediately exhaled is ________.

• oxygen

• carbon dioxide

• nitrogen

• argon

Which part of the plant is responsible for absorbing water in most plants?

• Leaves

• Flowers

• Roots

• Stems

• Buds

What is the formula for photosynthesis?

• 6CO2 + 6H2O + Light energy → C6H12O6 (sugar) + 6O2

• 6O2 + 6H2O + Light energy → C6H12O6 (sugar) + 6CO2

• 6CO2 + 6O2 + Light energy → C6H12O6 (sugar) + 6H2O

• 6CO2 + 6H2O + Light energy → C6H12O6 (sugar) + 6CO2 + 6H2O

During photosynthesis, which gas do plants take in from the atmosphere?

• Nitrogen

• Carbon dioxide

• Oxygen

• Hydrogen

What is the main product of photosynthesis that provides energy for plants?

• Oxygen

• Glucose

• Starch

• Cellulose

In which part of the plant does photosynthesis mainly occur?

• Leaves

• Stems

• Roots

• Flowers

What byproduct of photosynthesis is essential for animal life?

• Oxygen

• Carbon dioxide

• Glucose

• Water