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Structure of leaf

Total questions: 17

Worksheet time: 15mins

Name
Class
Date
1.

The ___________ of the plant that is charge of making food for the plant.

a)

flower

b)

roots

c)

leaves

d)

stem

2.

The leaf is known as the ___________.

a)

photogenic organ

b)

Photosynthetic organ

c)

Photographic organ

3.

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

a)

blade

b)

cuticle

c)

petiole

d)

epidermis

4.

Using their __________, plants combine sunlight, carbon dioxide and water to make glucose and oxygen

a)

Flowers

b)

Leaves

c)

Stem

d)

Roots

5.

Specialized cells that trap light on top of the leaf are called __________ __________ cells

a)

stem

b)

root

c)

stomata

d)

palisade mesophyll

6.
Which structures open and close stomata to allow gas exchange but prevent water loss in leaves?
a)
Epidermis
b)
Vascular tissue
c)
Guard cells
d)
Spongy mesophyll
7.

Plants make food through photosynthesis

a)

True

b)

False

8.
What is photosynthesis?
a)
Water loss by a plant.
b)
When a photographer takes a photo.
c)
To get your pictures from the photo lab.
d)
The process in which plants make their food.
9.
The water needed for photosynthesis comes into the leaves through the
a)
upper epidermis
b)
stomata
c)
guard cells
d)
xylem cells
10.
The important gases, carbon dioxide and oxygen, enter and leave the leaf through the
a)
upper epidermis
b)
phloem
c)
stomata
d)
guard cells
11.

Where in the plant does photosynthesis occur?

a)

Flower

b)

Leaves

c)

Stem

d)

Roots

12.
The edge of the leaf blade is called ______. `
a)
midrib
b)
margin
c)
petiole
d)
leaf base
13.
The central vein is also called _____.
a)
midbrib
b)
margin
c)
apex
d)
base
14.
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 
15.

This a thin,flat,expanded part of the leaf , mostly green in colour

a)

node

b)

Lamina

c)

Midrib

d)

Leaf Base

16.

The point on the stem from where a leaf arises is a :

a)

Stem

b)

Node

c)

Bark

d)

Trunk

17.

The lamina has a thickend vein along its center called the :

a)

Midrib

b)

Veinlet

c)

Petiole

d)

Vein