Parts of the Leaf

Question 1

Cuticle

Answer 1

waxy coating that protects the leaf from water loss and harmful substances

Question 2

Epidermis

Answer 2

transparent to allow light to pass through to the underlying layer

serves as a protective barrier, helps retain water and prevent damage

Question 3

Palisade cells/mesophyll

Answer 3

main cells for photosynthesis

Question 4

vasular bundle (vein)

Answer 4

organizes the two transport tissues into the highways throughout the leaf

transports glucose and water around the leaf

Question 5

What are the two transport tissues inside the vascular bundle?

Answer 5

Xylem and Phloem

Question 6

Xylem

Answer 6

transports water + minerals from roots up to the leaves

Starts out alive then cells die, leaving the cell wall

Question 7

Phloem

Answer 7

Transports sugar in the leaves to the rest of the plant (goes down)

Question 8

Spongey mesophyll

Answer 8

Loosely packed with many moist air gaps, allows gas exchange via diffusion

Question 9

Stomata

Answer 9

opening for gas exchange

CO2 in and O2 out

looses H2O as a by product

Question 10

Guard cells

Answer 10

Regulates the size of the stomata to control H2O loss and CO2 intake

Question 11

How does the guard cells open the stomata?

Answer 11

fill it with water to open (turgid)

Question 12

How does the guard cells close the stomata?

Answer 12

empty of water to close (flaccid)