Sketch on page 82

Question 1

Inter cellular air spaces in spongy parenchyma

Answer 1

allows fast diffusion of carbon dioxide and oxygen to and from the parenchyma cells for photosynthesis and respiration

Question 2

transparent waxy cuticle

Answer 2

lets light into leaf cells, protects leaf cells , is waterproof and prevents water loss

Question 3

Xylem

Answer 3

carries water to the conducting tissue in the leaf vein

Question 4

upper epidermis

Answer 4

single layer of transparent cells that allow light to reach cells below chloroplast

Question 5

Palisade parenchyma /spongy parenchyma

Answer 5

has chloroplast for photosynthesis

Question 6

the long cylindrical cells

Answer 6

the cell shape and arrangement allow more cells to be exposed to the sun ,than if they were round

Question 7

guard cells

Answer 7

regulate water vapour lost during plants transpiration and allows diffusion of carbon dioxide and oxygen for photosynthesis and respiration through the stomata

Question 8

phloem

Answer 8

carries food from leaf to other parts of the plant