Plant Transport

Question 1

Dicot leaf

Answer 1

Mesosphyte

Question 2

Marram grass

Answer 2

Xerophyte

Question 3

Water Lily

Answer 3

Hydrophyte

Question 4

Formula to calculate magnification

Answer 4

IAM triangle

Question 5

Leaf structures

Answer 5

Waxy cuticle
Upper epidermis
Palisade mesophyll
Spongy mesophyll
Xylem
Phloem
Collenchyma
Lower epidermis

Question 6

Root structures

Answer 6

Epidermis
Exodermis
Cortex/parenchyma
Pericycle
Xylem
Phloem

Question 7

Artery and vein structures

Answer 7

Endothelium
Tunica interna
Tunica media
Tunica externa/adventitia
Lumen

Question 8

Transpiration

Answer 8

Loss of water as water vapour by evaporation and diffusion out of stomata

Question 9

Factors increasing transpiration

Answer 9

Lower humidity
Higher temp

Question 10

Hydrophyte

Answer 10

Water lilies
Little/no waxy cuticle as no need to conserve water
Stomata on upper surface as lower surface is submerged
Poorly developed xylem as no need to transport water
Large air spaces provides buoyancy and act as reservoirs for gas

Question 11

Mesophyte

Answer 11

Live with adequate water
Close stomata at night to decrease water loss
Shed leaves in unfavourable conditions eg. Winter

Question 12

Xerophyte

Answer 12

Marram grass
Water is scarce
Thick wavy cuticle reducing water loss by evaporation from epidermal tissue
Sunken stomata increasing humidity
Rolled leaves reduces area of leaf exposed to air
Stiff interlocking hairs trap water vapour inside rolled leaf reducing water loss

Question 13

What is the difference in arrangement of vascular bundle in stem and root

Answer 13

Root vascular bundle in the middle
Stem vascular bundle is arranged around periphery or edge

Question 14

What chemical is found in xylem

Answer 14

Lignin

Question 15

What chemical is found in phloem

Answer 15

Cellulose

Question 16

Xylem

Answer 16

Vessels
Trachieds
Parenchyma
Xylem are dead cells that transport water and minerals up the plant
Provide strength with waterproof lignin

Question 17

Phloem

Answer 17

Sieve tubes
Carry sucrose and amino acids

Question 18

Hydrophyte
Water plants

Answer 18

Little/no waxy cuticle as no need to conserve water
Stomata on upper surface as lower is submerged
Large air spaces to provide buoyancy

Question 19

Mesophyte
Adequate water

Answer 19

Close stomata at night to decrease water loss
Shed leaves in unfavourable conditions eg winter
Under ground Organs and dormant seeds survive winter

Question 20

Xerophyte water is scarce

Answer 20

Thick wavy cuticle reduce water loss by evaporation from epidermal tissue
Sunken stomata reducing diffusion gradient
Rolled leaves reduces area exposed to air
Stiff interlocking hairs trap water vapour inside rolled leaf