Leaf Structure

Question 1

Cuticle:

Answer 1

Waxy layer that prevents water loss from top of the leaf.

Question 2

Epidermis:

Answer 2

Transparent cell that allows sunlight to pass through to the palisade cell.

Question 3

Palisade:

Answer 3

Found at the top of the cell and contains many chloroplasts which absorbs sunlight.

Question 4

Spongy mesophyll layer:

Answer 4

• Irregurlary shaped cells which create air spaces to allow gaseous exchange to take place.
• Do not contain many chloroplasts.

Question 5

Vascular bundle:

Answer 5

Made up of xylem and phloem.

Question 6

Xylem:

Answer 6

Vessel which transports water and dissolved minerals and has lignified walls made of cellulose.

Question 7

Phloem:

Answer 7

Vessel which transports nutrients.

Question 8

Stomata:

Answer 8

• Little holes that open and close to allow gaseous exchange to take place.
• It closes to prevent water loss and open to let gases come in and out,,
• When guard cells lose water, the stoma close (at night), while the aroma open when guard cells gain water and swell (during the day.)