Leaf Structure

Question 1

Most dicotyledonous have

Answer 1

Most dicotyledonous plant leaves have a large surface area and are thin.

Question 2

Cuticle

Answer 2

the waxy layer that prevents water loss from the top of the leaf

Question 3

Upper/Lower Epidermis

Answer 3

transparent cell that allows sunlight to pass through to the palisade cell

Question 4

Palisade mesophyll

Answer 4

is found at the top of the cell and contains many chloroplasts that absorb sunlight.

Question 5

Spongy mesophyll

Answer 5

irregularly shaped cells that create air spaces to allow the gaseous exchange to take place; do not contain many chloroplasts

Question 5

Vascular Bundles

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

a vessel that transports nutrients

Question 8

Guard Cells

Answer 8

control the opening and closing of stomata

Question 9

Stomata

Answer 9

little holes that open and close to allow the gaseous exchange to occur. The stomata are close to prevent water loss and open to letting gases in and out. When guard cells lose water, the stoma closes (at night), while the stoma opens when guard cells gain water & swell (during the day).