Photosynthesis: What's in a Leaf?

What is the relationship between structure and function in a leaf?

• Structure and function are unrelated in a leaf

• There is no relationship between structure and function in a leaf

• The function of a leaf determines its structure

• The structure of a leaf determines its function

What are three things entering the leaf in Model 1?

• Oxygen, sugars, water

• Water, sugars, sunlight

• Sunlight, water, carbon dioxide

• Carbon dioxide, oxygen, sugars

What are three substances leaving the leaf in Model 1?

• Oxygen, sugars, water

• Sunlight, carbon dioxide, water

• Water, carbon dioxide, oxygen

• Sugars, oxygen, sunlight

Which substance is both entering and leaving the leaf?

• Sugars

• Oxygen

• Sunlight

• Water

What are the reactants for photosynthesis?

• Sunlight + water

• Carbon dioxide + oxygen

• Oxygen + sugars

• Carbon dioxide + water

Where do these reactants enter the leaf?

• Through the stomata

• Through the veins

• Through the lower epidermis

• Through the upper epidermis

What are the products of photosynthesis?

• Sugars + oxygen

• Carbon dioxide + water

• Sunlight + sugars

• Oxygen + water

From where do the products leave the leaf?

• Through the stomata

• Through the upper epidermis

• Through the veins

• Through the lower epidermis

What is the purpose of a leaf having a water-tight covering?

• To prevent water loss

• To allow gas exchange

• To regulate temperature

• To protect against predators

What structure is found between guard cells in Model 2?

• Air space

• Chloroplast

• Stoma

• Vein