Transpiration

Question 1

Transpiration

Answer 1

Loss of water in the form of water vapour from the aerial parts of the plant

Question 2

Thre are two types of leaf evaporation

Answer 2

Stomatal transpiration

Cuticular transpiration

Question 3

Stomatal transpiration

Answer 3

Loss of eater vapour through the stomata

Question 4

Cuticular transpiration

Answer 4

Loss of water vapour through the cuticle

Question 5

Transpiration pull

Answer 5

Evaporation of water from the leaf surfaces of plants created a sucking force that pulls water out of the leaf. Water is drawn out of the xylem tissue in the leaf and stem. This evaporation force pulls the water up the plant from the roots

Question 6

Cuticle

Answer 6

Waxy layer covering the epidermis to reduce cuticular transpiration

Question 7

Guard cells

Answer 7

Control the rate of stomatal transpiration by opening and closing the stomata

Question 8

Location and number of stomata

Answer 8

Most stomata are found on the shaded, cooler underside of leaves, with fewer on the upper surface; this means less water transpires

Question 9

Ventral surface

Answer 9

Underside

Question 10

Dorsal surface

Answer 10

Upper side

Question 11

Position and shading

Answer 11

Leaf position on the stem allows for some leaves to be shaded by others and so reducing evaporation

Question 12

Leaf size

Answer 12

Larger leaves lose more water than smaller leaves as their surface area is greater

Question 13

Leaf hairs

Answer 13

Hairs reduce water evaporation through diffusion

Question 14

Xylem

Answer 14

Vascular tissue replaces lost water by carrying more from the stem into the leaves