Leaf Structure

Which structures open and close stomata to allow gas exchange but prevent water loss in leaves?

• Epidermis

• Vascular tissue

• Guard cells

• Spongy mesophyll

Number 5 is...

• Blade

• Margin

• Midrib

• Serrate

The important gases, carbon dioxide and oxygen, enter and leave the leaf through the

• upper epidermis

• phloem

• stomata

• guard cells

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Using their __________, plants combine sunlight, carbon dioxide and water to make glucose and oxygen

• Flowers

• Leaves

• Stem

• Roots

Tags

NGSS.MS-LS1-6

Label the leaf cell

a

b

c

d

e

f

Palisade mesophyll

Spongy mesophyll

Stoma

Guard cell

Epidermis

Waxy cuticle

Tags

NGSS.MS-LS1-2

There are little pores on the bottom of the leaf called ________

• stem

• root

• stomata

• palisade mesophyll

Tags

NGSS.MS-LS1-6

Number 3 is...

• Node

• Internode

• Petiole

• Axillary Bud

Why do leaves need a large surface area?

• To absorb as much water as possible.

• To absorb as much sunlight as possible.

• To absorb as much food as possible.

• To absorb as much chlorophyll as possible.

Tags

NGSS.MS-LS2-3

What is the function of the midrib?

• It provides strength throughout the leaf, keeping it upright and sturdy in the wind.

• It provides sunlight to the leaf for it to carry out photosynthesis.

• It attaches the leaf to the plant’s stem.

• It is tiny openings or pores, which allow carbon dioxide to enter and oxygen to exit the leaf.

What is the function of the petiole?

• It provides strength throughout the leaf, keeping it upright and sturdy in the wind.

• It provides sunlight to the leaf for it to carry out photosynthesis.

• It attaches the leaf to the plant’s stem.

• It is tiny openings or pores, which allow carbon dioxide to enter and oxygen to exit the leaf.

Tags

NGSS.MS-LS1-6