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Leaf structure and function igcse Biology

Total questions: 21

Worksheet time: 11mins

Name
Class
Date
1.

What is the name of the clear layer of cells (H) on top of the leaf?

a)

Cuticle

b)

Air space

c)

Guard cell

d)

Upper epidermis

2.
The leaf has a shiny, waxy cuticle around it to
a)
increase the rate of photosynthesis
b)
attract more light
c)
control water loss
d)
stop carbon dioxide and oxygen gases escaping
3.
The role of the guard cell is to
a)
help control the temperature of the plant
b)
control how much water enters the leaf
c)
control how much glucose is stored
d)
control the movement of water vapour & gases 
4.

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

a)

Palisade cells

b)

Guard cell

c)

Spongy layer

d)

Lower epidermis

5.
carries water and minerals from roots to other parts of the plant
a)
xylem 
b)
phloem
c)
stoma
d)
guard cell
6.
Which organelle from the plant cell is primarily responsible for converting sunlight to energy?
a)
Mitochondria
b)
Nucleus
c)
Vacuole
d)
Chloroplast
7.
What is chlorophyll's main function?
a)
to make the plant a vegetable
b)
to blend into their environment
c)
to capture energy from sunlight for photosynthesis
d)
to help prevent water loss
8.
Carbon dioxide enters plant leaves through the __________.
a)
stomata
b)
chloroplasts
c)
xylem
d)
cuticle
9.
Which is NOT a reason why we should care about photosynthesis?
a)
It creates food for the plants, which then feed animals.
b)
Without it, we wouldn't be able to breathe oxygen.
c)
It uses up greenhouse gas CO2 in the atmosphere.
d)
It controls the water cycle.
10.

What is letter "D" pointing to?

a)

upper epidermis

b)

palisade mesophyll

c)

spongy mesophyll

d)

bundle sheath

11.

Which number is pointing to the xylem of the leaf?

a)

3

b)

4

c)

5

d)

6

12.

Which number is pointing to the stomata?

a)

6

b)

7

c)

8

d)

9

13.

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

a)

B

b)

C

c)

D

d)

E

14.

What is letter "A" pointing to?

a)

cuticle

b)

upper epidermis

c)

lower epidermis

d)

palisade mesophyll

15.

In a leaf, most photosynthesis takes place in the

a)

epidermis.

b)

mesophyll.

c)

cuticle.

d)

stomata.

16.

The air spaces between the spongy mesophyll allow for

a)

cellular respiration.

b)

waste storage.

c)

water storage.

d)

gas exchange.

17.

Recall what type of cells produces the waxy cuticle.

a)

Guard cell

b)

Mesophyll

c)

Epidermal

d)

Vascular

18.

Recall what type of tissue carries water to the leaf.

a)

Epidermal

b)

Phloem

c)

Guard cell

d)

Xylem

19.

Identify structure 3 in the diagram

a)

Waxy cuticle

b)

Palisade mesophyll

c)

Upper epidermis

d)

Guard cell

20.

thin stalk that connects the blade of the leaf to the plant's stem

a)

blade

b)

cuticle

c)

petiole

d)

epidermis

21.

The vascular tissues are ____&____.

a)

­Xylem and Phlobotemy

b)

­Xylemy and Phloemy

c)

­Xylemotomy and Phloemotomy

d)

­Xylem and Phloem.

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