ม4 Leaf Structure & Function

Most of the chloroplast cells are found in the

• upper epidermis
• pallisade mesophyll layer
• lower epidermis
• stomata

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The water needed for photosynthesis comes into the leaves through the

• upper epidermis
• stomata
• guard cells
• xylem cells

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

The role of the guard cell is to

• help control the temperature of the plant
• control how much water enters the leaf
• control how much glucose is stored
• control the movement of water vapour & gases 

Tags

NGSS.MS-LS1-2

Which structure helps prevent water loss and protects the leaf?

• Palisades mesophyll
• Spongy mesophyll
• Vascular tissue
• Cuticle

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

• spongy mesophyll

• palisade mesophyll

• cuticle

• 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

The outermost layer of CELLS of the leaf is the

• cuticle

• epidermis

• spongy mesophyll

• bundle sheath

This layer of cells is where photosynthesis occurs within the leaf; there are air spaces within this layer

• spongy mesophyll

• palisade mesophyll

• chloroplast

• upper epidermis

Tags

NGSS.MS-LS1-6

thin stalk that connects the blade of the leaf to the plant's stem

• blade

• cuticle

• petiole

• epidermis