Leaf Structure and Function

When do guard cells open the stomata?

• At night

• During the day

• In winter

• When it rains

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

Where does most of a plant's photosynthesis occur?

• In the spongy layer

• In the palisade layer

• In the guard cells

• In the veins

Tags

NGSS.MS-LS1-6

Which of the following is NOT a characteristic of most leaves?

• They are green

• They are thick

• They have a large surface area

• They contain veins

What do the xylem tubes in leaf veins transport?

• Glucose

• Carbon dioxide

• Water

• Oxygen

Tags

NGSS.MS-LS2-3

Which part of the leaf is responsible for gas exchange?

• Petiole

• Stomata

• Veins

• Cuticle

What is the waxy layer on the surface of a leaf called?

• Epidermis

• Mesophyll

• Cuticle

• Chloroplast

Which part of the leaf contains chlorophyll?

• Veins

• Stomata

• Mesophyll

• Petiole

What is the name of the structure that attaches the leaf to the stem?

• Blade

• Petiole

• Stomata

• Vein

Which part of the leaf is primarily involved in photosynthesis?

• Epidermis

• Mesophyll

• Cuticle

• Veins

Tags

NGSS.MS-LS1-6

What is the main purpose of the cuticle on a leaf?

• To absorb sunlight

• To prevent water loss

• To facilitate gas exchange

• To store nutrients