Understanding Photosynthesis and Nutrition

What is the primary purpose of photosynthesis in plants?

• To produce oxygen

• To make food (glucose)

• To absorb sunlight

• To store water

Which of the following is NOT a requirement for photosynthesis?

• Sunlight

• Water

• Glucose

• Carbon dioxide

Where does photosynthesis mainly occur in a plant?

• In the roots

• In the flowers

• In the stems

• In the leaves

What role does chlorophyll play in photosynthesis?

• It stores glucose

• It absorbs sunlight

• It releases oxygen

• It converts starch into sugar

When plants convert glucose into starch, what is the purpose of this process?

• To create oxygen

• To store energy for later use

• To produce carbon dioxide

• To absorb water

How can you test for the presence of starch in a plant?

• By using water

• By using iodine

• By using sunlight

• By using carbon dioxide

What color does iodine solution turn when it comes in contact with starch?

• Yellow-brown

• Blue-black

• Green

• Red

In the process of photosynthesis, what do plants take in from the air?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

Which statement best describes the relationship between plants and animals regarding oxygen and carbon dioxide?

• Plants produce carbon dioxide for animals to breathe.

• Animals produce oxygen for plants to use.

• Plants and animals do not interact with gases.

• Plants produce oxygen, and animals produce carbon dioxide.

Why is good nutrition important for living organisms?

• It helps them grow taller.

• It provides energy and supports healthy bodies.

• It makes them stronger than others.

• It allows them to breathe better.