Photosynthesis
2
16 Lots of Science Library Book #2 Lots of Science Library Book #2 1 5 3 7 What do you do when you feel hungry? What would you do if you could not move around to get your food or call for someone to bring you food? This is the situation a plant finds itself in when it needs food. Do you remember the things that all plants need to live and grow? Photo means “light,” and synthesis means “putting together.” DID YOU KNOW ? The chlorophyll captures, or absorbs, sunlight energy. The oxygen is released into the air by the plant. Think about the factories that people use to manufacture things. They are usually big, noisy, and smell like smoke or chemicals. Plants are busy making food to feed the world, and they do it without a sound. Jan Ingenhousz was a botanist from the Netherlands who first discovered some of the stages of photosynthesis. He lived from 1730 to 1799. WHO’S• WHO The plant mixes the hydrogen and carbon dioxide to make sugar and other food. This food is called sap. In most plants, chloroplasts are the tiny bodies in the plant cells that contain the chlorophyll. air (CO2) water sunlight 12 Lots of Science Library Book #2 14 Lots of Science Library Book #2 10 Lots of Science Library Book #2
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Transcript of Photosynthesis
16
Lots
of
Sci
ence
Lib
rary
Boo
k #2
Lots
of
Sci
ence
Lib
rary
Boo
k #2
1
5
37
Wh
at d
o y
ou
do
wh
enyo
u f
eel h
un
gry
?
Wh
at w
ou
ld y
ou
do
ifyo
u c
ou
ld n
ot
mov
ear
ou
nd
to
get
yo
ur
foo
do
r ca
ll fo
r so
meo
ne
tob
rin
g y
ou
fo
od
?T
his
is t
he
situ
atio
n a
pla
nt
fin
ds
itse
lf in
wh
enit
nee
ds
foo
d.
Do
yo
u r
emem
ber
the
thin
gs
that
all
pla
nts
nee
d t
o li
vean
d g
row
?
Ph
oto
mea
ns
“lig
ht,”
and
syn
thes
ism
ean
s “p
utt
ing
tog
eth
er.”
DID
YO
U
KN
OW
?
Th
e ch
loro
phy
llca
ptu
res,
or
abso
rbs,
sun
ligh
t en
erg
y.
Th
e ox
ygen
isre
leas
ed in
to t
he
air
by t
he
pla
nt.
Th
ink
abo
ut
the
fact
ori
es t
hat
peo
ple
use
to
man
ufa
ctu
reth
ing
s.T
hey
are
usu
ally
big
,n
ois
y,an
d s
mel
llik
e sm
oke
or
chem
ical
s.P
lan
ts a
re b
usy
mak
ing
fo
od
to
feed
th
e w
orl
d,
and
th
ey d
o it
wit
ho
ut
a so
un
d.
Jan
Ing
enh
ou
sz w
asa
bo
tan
ist
fro
m t
he
Net
her
lan
ds
wh
o f
irst
dis
cove
red
so
me
of
the
stag
es o
f p
ho
tosy
nth
esis
.H
e liv
ed f
rom
1730
to
179
9.
WH
O’S
•W
HO
Th
e p
lan
t m
ixes
th
ehy
dro
gen
an
d c
arb
on
dio
xid
e to
mak
e su
gar
and
oth
er f
oo
d.T
his
fo
od
is c
alle
d s
ap.
In m
ost
plan
ts,
chlo
ropl
asts
are
the
tiny
bodi
es in
the
pla
nt c
ells
that
con
tain
the
chl
orop
hyll.
air
(CO
2)
wat
er
sunl
ight
12Lo
ts o
f S
cien
ce L
ibra
ry B
ook
#2
14Lo
ts o
f S
cien
ce L
ibra
ry B
ook
#210
Lots
of
Sci
ence
Lib
rary
Boo
k #2
15
Th
e plan
t moves
the sap
thro
ug
ho
ut its
parts to
use o
rsto
re for later u
se.
Mo
st of th
e foo
d is
man
ufactu
red in
the
leaves of th
e plan
t.H
ere’s ho
w th
e facto
ryw
orks:
11913
Plan
ts have a
un
iqu
e way
of g
etting
foo
d.T
hey
make it
them
selves.
All plants, from
the tiny weed in
your driveway to the giant saguaro,
make their ow
n food.
Plan
ts use th
eseth
ree ing
redien
ts to
man
ufactu
re the
foo
d th
ey need
tolive an
d g
row
.
Th
is pro
cess of
foo
d m
anu
facturin
gis calledp
ho
tosyn
thesis.
Plan
ts have
chlo
rop
hyll in th
e cellso
f their leaves.
Th
e plan
t mixes th
esu
nlig
ht en
ergy
with
water.
Th
e sun
ligh
t energ
ysp
lits the w
ater into
hydro
gen
and
oxygen
.
Th
e plan
t takes incarb
on
dioxid
efro
m th
e air.
All p
eop
le and
anim
alslive by eith
er eating
plan
ts or eatin
g an
imals
that eat p
lants.
Plants are the first elem
ent of every food chain on theearth. C
an you think of a few
examples of food chains?
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