Structure of a Leaf

The water needed for photosynthesis comes into the leaves through the

• upper epidermis
• stomata
• guard cells
• xylem cells

Tags

NGSS.MS-LS1-6

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

• upper epidermis

• phloem

• stoma / stomata

• guard cells

Tags

NGSS.MS-LS1-6

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

• Epidermis
• Vascular tissue
• Guard cells
• Spongy mesophyll

A thin layer sits on top of the epidermis, which helps to prevent water loss and protect the leaf. Which one of these must it be called?

• Palisade mesophyll

• Spongy mesophyll

• Vascular tissue

• Cuticle

What is the name of the elongated, packed cells (part G) directly under the upper epidermis?

• Palisade cells

• Guard cell

• Spongy layer

• Lower epidermis

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-6

The column-like cells that lie directly underneath the epidermis makes up the

• spongy mesophyll

• palisade mesophyll

• cuticle

• bundle sheath

B is the epidermis, so what is letter "A" pointing to?

• cuticle

• stomata

• spongy mesophyll

• palisade mesophyll

Tags

NGSS.MS-LS1-2

What is letter "D" pointing to?

• upper epidermis

• palisade mesophyll

• spongy mesophyll

• bundle sheath

Tags

NGSS.MS-LS1-2

Which of the following is pointing to the "guard cell"?

• B

• C

• D

• E

Tags

NGSS.MS-LS1-2

(Look carefully!) Which number is pointing to a stoma?

• 6

• 7

• 8

• 9

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3