5. plant transport systems

Question 1

cuticle

Answer 1

waterproof layer that reduces water loss from the leaf

Question 2

upper epidermis cells

Answer 2

protects leaf and allows light to pass through to the layer below

Question 3

palisade epidermis cell

Answer 3

absorbs light for photosynthesis

Question 4

spongy mesophyll cells

Answer 4

absorbs light for photosynthesis

Question 5

xylem (vein)

Answer 5

transports water from soil to leaf for photosynthesis

Question 6

phloem (vein)

Answer 6

transports sugar from photosynthesising cells to rest of the palnt

Question 7

air spaces

Answer 7

allows diffusion of gases within the leaf

Question 8

stoma

Answer 8

allows the carbon dioxide to enter the leaf and oxygen to exit the leaf

Question 9

guard cells

Answer 9

CONTROLS gas exchange between the leaf and the air outside the leaf

Question 10

what is transpiration

Answer 10

the process by which water moves up the plant and is lost by evaporation from stomata in plant leaves

Question 11

structure of plant cell (from top to bottom)

Answer 11

• cuticle
• upper epidermis cells
• palisade mesophyll cells
• spongy mesophyll cells
• xylem
• phloem
• air spaces
• stoma
• guard cells