Exploring the Process of Photosynthesis

Photosynthesis is crucial for life on Earth, providing food and oxygen. It involves green plants and algae using sunlight to convert carbon dioxide and water into glucose and oxygen. This process occurs in chloroplasts, with chlorophyll capturing light energy. The glucose produced feeds plants and animals, while oxygen is a vital byproduct. Understanding photosynthesis helps us appreciate its role in the food chain and ecosystem.

Why is photosynthesis crucial for life on Earth?

• It produces food and oxygen.

• It generates heat.

• It creates water.

• It absorbs sunlight.

What do chloroplasts contain that is essential for photosynthesis?

• Nucleus

• Mitochondria

• Chlorophyll

• Ribosomes

What is the primary function of chlorophyll in photosynthesis?

• Capturing light energy

• Producing carbon dioxide

• Absorbing water

• Generating heat

Which two substances are converted into glucose and oxygen during photosynthesis?

• Carbon dioxide and water

• Oxygen and nitrogen

• Carbon dioxide and nitrogen

• Glucose and water

What type of reaction is photosynthesis?

• Exothermic

• Combustion

• Endothermic

• Neutralization

How do plants obtain water for photosynthesis?

• From animals

• By absorbing sunlight

• From the air

• Through their roots

Where does carbon dioxide enter the plant?

• Through the roots

• Through the flowers

• Through the stoma on the underside of the leaf

• Through the stem

What happens to some of the glucose produced during photosynthesis?

• It is used for respiration.

• It is converted into oxygen.

• It is released into the air.

• It is turned into carbon dioxide.

Why are green plants called producers or autotrophs?

• They decompose organic matter.

• They consume other plants.

• They rely on animals for food.

• They produce their own food.

What is considered the most valuable byproduct of photosynthesis?

• Water

• Glucose

• Oxygen

• Carbon dioxide