bio module 12 leaf quiz

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

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

• Epidermis
• Vascular tissue
• Guard cells
• Spongy mesophyll

Which structure helps prevent water loss and protects the leaf?

• Palisades 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

What is letter "A" pointing to?

• cuticle

• upper epidermis

• lower epidermis

• palisade mesophyll

What is letter "D" pointing to?

• upper epidermis

• palisade mesophyll

• spongy mesophyll

• bundle sheath

Which number is pointing to the stomata?

• 6

• 7

• 8

• 9

The outermost layer of CELLS of the leaf is the

• cuticle

• epidermis

• spongy mesophyll

• bundle sheath

The vascular tissue which transports sugar (food) in both directions within the leaf is the

• xylem

• phloem

• bundle sheath

• chloroplast