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?

6Lots of S

cience Library Book #2

2Lots of S

cience Library Book #2

8Lots of S

cience Library Book #2

4Lots of S

cience Library Book #2