( 3 ) TRANSPORTATION VRRRRRRRRRRRRRRRRRRRRRRRRMMMMMMMMMM ( PLANTS )

Question 1

What is transpiration?

Answer 1

Process or water loss in the form on water vapour from the surface of leaves to the air through evaporation

Question 2

What is the epidermis of a leaf made up of?

Answer 2

Single layer of epidermal cells covering both the upper and lower surfaces of the leafs

Question 3

What do epidermal cells secrete?

Answer 3

Waxy Cuticle, covers the outer surface of the leaf to prevent water loss during transpiration

Question 4

What does the stoma do to reduce the loss of water through transpiration

Answer 4

Closed stoma

Question 5

What is exudation?

Answer 5

Water loss from plants in liquid form through hydathodes that are always open at the edges of the leaves

Question 6

Other than transpiration, water is also lost through

Answer 6

Exudation/Guttation

Question 7

When does guttation usually occur?

Answer 7

At night or when air humidity is high

Question 8

Factors affecting transpiration

Answer 8

Number of stomata
Movement of air
Light intensity
Temp
Air humidity

Question 9

Where are the xylem and phloem located?

Answer 9

Located in the vascular bundle

Question 10

Function of Xylem

Answer 10

Transport water and dissolved mineral salts from the roots to the leaves through the stem to carry out photosynthesis and replace water lost during transpiration

Question 11

Function of Phloem

Answer 11

Transports sucrose produced by leaves during photosynthesis to other parts of the plants