BIOLOGY - Plant Biology - What is photosynthesis

Photosynthesis is crucial for life, providing food and oxygen. It involves green plants and algae using sunlight to convert carbon dioxide and water into glucose and oxygen. Chlorophyll in chloroplasts captures light energy, driving this endothermic reaction. Water is absorbed through roots, and carbon dioxide enters through leaf stomata. Oxygen, a byproduct, is vital for life. Plants, as autotrophs, form the base of the food chain, supporting all animal life.

Why is photosynthesis crucial for life on Earth?

• It absorbs nitrogen from the air.

• It generates oxygen and food.

• It creates fossil fuels.

• It produces carbon dioxide.

What is the role of chlorophyll in photosynthesis?

• It stores glucose.

• It absorbs water.

• It releases oxygen.

• It captures light energy.

Which of the following is a byproduct of photosynthesis?

• Carbon dioxide

• Oxygen

• Nitrogen

• Glucose

How do plants obtain water for photosynthesis?

• Via their roots

• From the air

• Through their leaves

• By absorbing sunlight

What happens to some of the glucose produced in photosynthesis?

• It is released into the air.

• It is stored as starch.

• It is converted into oxygen.

• It is used for photosynthesis.