Water, Air and Human Beings
Name: ______________________ Date: ____________
Write the missing letters on the lines to finish each word.
1.
r
t
The usually underground organ that lacks buds or leaves or nodes
2.
s
e
A slender or elongated structure that supports a plant or fungus or a plant part or plant organ
3.
e
f
The main organ of photosynthesis and transpiration in higher plants
5.
g
r
t
e
To cause to grow or sprout
7.
p
t
s
y
e
i
s
How plants make food from sunlight
8.
c
h
o
p
y
Any of a group of green pigments found in photosynthetic organisms
9.
o
w
e
A plant cultivated for its blooms or blossoms
12.
r
a
h
One of the tubules forming the respiratory system of most insects and many arachnids
13.
b
n
c
u
Either of the two main branches of the trachea
14.
u
s
Either of two saclike respiratory organs in the chest of vertebrates (plural)
15.
d
p
r
m
A mechanical device in a camera that controls size of aperture of the lens
16.
w
t
Clear liquid we drink that falls as rain
17.
v
o
A visible suspension in the air of particles of some substance
18.
e
c
i
t
a
t
The quantity of water falling to earth at a specific place within a specified period of time
19.
a
a
t
i
o
n
The process of giving off or exhaling water vapor through the skin or mucous membranes
23.
s
i
h
t
The rays of the sun
24.
c
a
r
b
o
n
A heavy odorless colorless gas formed during respiration and by the decomposition of organic