Science Quiz on Photosynthesis and Digestion

Which gas is produced by plants during photosynthesis?

• Carbon dioxide

• Nitrogen

• Oxygen

• Hydrogen

In a leaf, where does most photosynthesis take place?

• Upper epidermis

• Lower epidermis

• Palisade layer

• Spongy layer

What does chlorophyll do in photosynthesis?

• Breaks down glucose

• Absorbs energy from light

• Produces carbon dioxide

• Transports water

Which plant structure allows carbon dioxide to enter the leaf?

• Veins

• Stomata

• Chloroplasts

• Epidermis

What type of nutrient provides the body with most of its energy?

• Proteins

• Vitamins

• Carbohydrates

• Minerals

Which test solution turns blue-black when starch is present?

• Benedict's solution

• Water

• Iodine solution

• Biuret solution

What is the main function of enzymes in digestion?

• Store energy

• Break down large molecules into smaller ones

• Transport nutrients

• Produce vitamins

In the digestive system, where does most nutrient absorption occur?

• Stomach

• Large intestine

• Small intestine

• Oesophagus

What is the function of root hair cells?

• Store food

• Absorb water and minerals

• Produce chlorophyll

• Make glucose

What are xylem vessels responsible for?

• Transporting sugar

• Storing food

• Transporting water and minerals

• Making proteins