Cell strucure of a leaf

1.

Multiple Choice

30 sec

1 pt

The water needed for photosynthesis comes into the leaves through the

upper epidermis

stomata

guard cells

xylem cells

2.

Multiple Choice

1 min

1 pt

The important gases, carbon dioxide and oxygen, enter and leave the leaf through the

upper epidermis

phloem

stomata

guard cells

3.

Multiple Choice

1 min

1 pt

Which structures open and close stomata to allow gas exchange but prevent water loss in leaves?

Epidermis

Vascular tissue

Guard cells

Spongy mesophyll

4.

Multiple Choice

1 min

1 pt

Which structure helps prevent water loss and protects the leaf?

Palisades mesophyll

Spongy mesophyll

Vascular tissue

Cuticle

5.

Multiple Choice

1 min

1 pt

What is the name of the elongated, packed cells (part G) directly under the upper epidermis?

Palisade cells

Guard cell

Spongy layer

Lower epidermis

6.

Multiple Choice

30 sec

1 pt

The column-like cells that lie directly underneath the epidermis makes up the

spongy mesophyll

palisade mesophyll

cuticle

bundle sheath

7.

Multiple Choice

1 min

1 pt

What is letter "A" pointing to?

cuticle

upper epidermis

lower epidermis

palisade mesophyll

8.

Multiple Choice

1 min

1 pt

What is letter "D" pointing to?

upper epidermis

palisade mesophyll

spongy mesophyll

bundle sheath

9.

Multiple Choice

30 sec

1 pt

Which of the following is pointing to the "guard cell"?

B

C

D

E

10.

Multiple Choice

30 sec

1 pt

Which part of the leaf consists of xylem and phloem?

vascular bundle

bundle sheath

palisade mesophyll

spongy mesophyll

11.

Multiple Choice

30 sec

1 pt

Most photosynthesis occurs in this part of the leaf:

upper epidermis

cuticle

palisade mesophyll

spongy mesophyll

12.

Multiple Choice

30 sec

1 pt

The outermost layer of CELLS of the leaf is the

cuticle

epidermis

spongy mesophyll

bundle sheath

13.

Multiple Choice

30 sec

1 pt

This layer of cells is where photosynthesis occurs within the leaf; there are air spaces within this layer

spongy mesophyll

palisade mesophyll

chloroplast

upper epidermis

14.

Multiple Choice

30 sec

1 pt

The cell organelle where photosynthesis occurs in plant cells is the

chloroplast

mitochondrion

vacuole

nucleus

15.

Multiple Choice

30 sec

1 pt

The vascular tissue which transports sugar (food) in both directions within the leaf is the

xylem

phloem

bundle sheath

chloroplast

16.

Multiple Choice

30 sec

1 pt

Which two layers of the plant contain chloroplasts?

xylem and phloem

upper and lower epidermis

cuticle and upper epidermis

palisade and spongy mesophyll

17.

Multiple Choice

30 sec

1 pt

The majority of the stomata of a leaf can usually be found within the

guard cells

upper epidermis

lower epidermis

cuticle

18.

Multiple Choice

30 sec

1 pt

The reactants needed for photosynthesis to occur are:

carbon dioxide & water

carbon dioxide & oxygen

oxygen & water

carbon dioxide, oxygen & water

19.

Multiple Choice

30 sec

1 pt

The role of the guard cell is to

help control the temperature of the plant

control how much water enters the leaf

control how much glucose is stored

control the movement of water vapour & gases

20.

Multiple Choice

30 sec

1 pt

Sugar and the products of photosynthesis move through the plant in

the phloem cells

the xylem cells

the root hair cells

palisade mesophyll layer

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