18
Fruit/Seed Diagram Description
BurdockThe fruits have ___________ that can cling onto
the fur of passing mammals.
Pea podThe fruit pods ___________ open with a force to
throw the seeds out.
Maple
The _________________ structures help keep
the seeds ________________ in the air for the
_________________ to carry it far away from the
parent plant.
Complete the table below to match the fruits/seeds with the diagrams that show how far the seeds are scattered from their parent plants. In addition, fill in the blanks to complete the description on how the fruits/seeds are scattered. [8 marks]
Chapter 1
wing-like
split
hooks
wind
afloat
Z
X
Y
Name: Class: Date:
The Life Cycle of Plants
Consolidation Worksheet 1Why Do Plants Reproduce? / What Happens in the Life Cycle of a Flowering Plant?1. Label the different parts of the flower as shown below.
© 2012 Alston Publishing House Pte Ltd Science SMART Teacher’s Guide Grade 5 77
2. The statements below describe various stages in the development of a flowering plant.
A Fertilisation takes place in the flower. B The ovary develops into a fruit. C A seed germinates when it receives air, warmth and water. D The adult plant bears flowers. E A flower is pollinated by wind or animals. F The ovules develop into seeds. G The seedling grows into an adult plant. H The petals of the flower fall off.
Complete the sequence of the stages above by writing the letters in the boxes provided. The first letter has been written for you.
C
Name: Class: Date:
The Life Cycle of Plants
Consolidation Worksheet 2What Is Seed Dispersal?
Complete the table below by filling in the blanks with suitable words.
Method of seed dispersal Characteristics of fruits/seeds
By wind• Seedsare and light.
• Seedsmayhave -like structures or to help them stay afloat in the air longer.
By water• Fruitshave outer covering.
• Fruitshave husks that trap air to help them .
By splitting• Fruitshavepodswhichbecomedryandcrack
. When ripe, the pod splits to throw the seeds out with a .
By animals
• Seedsmaybefoundinfruitsthatare and .
• Seedsmayhave , or stiff that can attach themselves to the fur of
passing mammals.
78 © 2012 Alston Publishing House Pte LtdAdditional Teacher’s Resources
2. The statements below describe various stages in the development of a flowering plant.
A Fertilisation takes place in the flower. B The ovary develops into a fruit. C A seed germinates when it receives air, warmth and water. D The adult plant bears flowers. E A flower is pollinated by wind or animals. F The ovules develop into seeds. G The seedling grows into an adult plant. H The petals of the flower fall off.
Complete the sequence of the stages above by writing the letters in the boxes provided. The first letter has been written for you.
C
Name: Class: Date:
The Life Cycle of Plants
Consolidation Worksheet 2What Is Seed Dispersal?
Complete the table below by filling in the blanks with suitable words.
Method of seed dispersal Characteristics of fruits/seeds
By wind• Seedsare and light.
• Seedsmayhave -like structures or to help them stay afloat in the air longer.
By water• Fruitshave outer covering.
• Fruitshave husks that trap air to help them .
By splitting• Fruitshavepodswhichbecomedryandcrack
. When ripe, the pod splits to throw the seeds out with a .
By animals
• Seedsmaybefoundinfruitsthatare and .
• Seedsmayhave , or stiff that can attach themselves to the fur of
passing mammals.
© 2012 Alston Publishing House Pte Ltd Science SMART Teacher’s Guide Grade 5 79
8. The carpel consists of the , style, ovary and ovule.9. Seedsdispersedbywindhavewing-likestructuresor that help them
stay afloat.10.Seedsoffleshyfruitsthataretoolargetobeswallowedmaybe by the
animals that eat the fruits, away from their parents.
Down:2. The filament, anther and pollen grains make up the of the flower.3. is the transfer of pollen grains from the anther of a flower to the stigma
of a flower of the same species.5. Most fruits dispersed by have fibrous husks which can trap air to enable
them to stay afloat.7. Fruits and seeds must be so the seedlings will not compete with the
parent plant and one another for sunlight, water, nutrients and space.
Name: Class: Date:
Fun and Games
The Life Cycle of Plants
1 2
3
4
5
6
7
8
9
10
Complete the crossword puzzle using the clues given below.
Across:1. Fertilisation is the of a male reproductive cell with a female reproductive
cell.4. A typical seed is made up of an , seed leaves and a seed coat.6. The process in which a seed grows into a seedling is called .
Crossword Puzzle!
80 © 2012 Alston Publishing House Pte LtdAdditional Teacher’s Resources
8. The carpel consists of the , style, ovary and ovule.9. Seedsdispersedbywindhavewing-likestructuresor that help them
stay afloat.10.Seedsoffleshyfruitsthataretoolargetobeswallowedmaybe by the
animals that eat the fruits, away from their parents.
Down:2. The filament, anther and pollen grains make up the of the flower.3. is the transfer of pollen grains from the anther of a flower to the stigma
of a flower of the same species.5. Most fruits dispersed by have fibrous husks which can trap air to enable
them to stay afloat.7. Fruits and seeds must be so the seedlings will not compete with the
parent plant and one another for sunlight, water, nutrients and space.
Name: Class: Date:
Fun and Games
The Life Cycle of Plants
1 2
3
4
5
6
7
8
9
10
Complete the crossword puzzle using the clues given below.
Across:1. Fertilisation is the of a male reproductive cell with a female reproductive
cell.4. A typical seed is made up of an , seed leaves and a seed coat.6. The process in which a seed grows into a seedling is called .
Crossword Puzzle!
© 2012 Alston Publishing House Pte Ltd Science SMART Teacher’s Guide Grade 5 81
Name: Class: Date:
Exam Practice
The Life Cycle of Plants
Process skills: Observing, Analysing
Plants X and Y grow next to each other. A butterfly visited a flower in Plant X and then a flower in Plant Y as shown below, before flying off.
a. Fill in the blanks below.
i. The butterfly was most likely to transfer pollen grains from the flower in Plant to the flower in Plant . [1 mark]
ii. This type of pollination is known as . [1 mark]
b. Name two characteristics of plants that help in pollination by insects such as butterflies. [2 marks]
Hint:How do plants attract the
insects?
Plant X Plant Y
82 © 2012 Alston Publishing House Pte LtdAdditional Teacher’s Resources
Ans
wer
s to
Add
ition
al T
each
er’s
Res
ourc
esA
nsw
ers
to A
dditi
onal
Tea
cher
’s R
esou
rces
Name: Class: Date:
Exam Practice
The Life Cycle of Plants
Process skills: Observing, Analysing
Plants X and Y grow next to each other. A butterfly visited a flower in Plant X and then a flower in Plant Y as shown below, before flying off.
a. Fill in the blanks below.
i. The butterfly was most likely to transfer pollen grains from the flower in Plant to the flower in Plant . [1 mark]
ii. This type of pollination is known as . [1 mark]
b. Name two characteristics of plants that help in pollination by insects such as butterflies. [2 marks]
Hint:How do plants attract the
insects?
Plant X Plant Y
2.
The
stat
emen
ts b
elow
des
crib
e va
rious
sta
ges
in th
e de
velo
pmen
t of a
flo
wer
ing
plan
t.
A
Fe
rtilis
atio
n ta
kes
plac
e in
the
flow
er.
B
The
ovar
y de
velo
ps in
to a
frui
t.
C
A s
eed
germ
inat
es w
hen
it re
ceiv
es a
ir, w
arm
th a
nd w
ater
.
D
The
adul
t pla
nt b
ears
flow
ers.
E
A fl
ower
is p
ollin
ated
by
win
d or
ani
mal
s.
F Th
e ov
ules
dev
elop
into
see
ds.
G
Th
e se
edlin
g gr
ows
into
an
adul
t pla
nt.
H
The
peta
ls of
the
flow
er fa
ll of
f.
C
ompl
ete
the
sequ
ence
of t
he s
tage
s ab
ove
by w
ritin
g th
e le
tters
in th
e bo
xes
prov
ided
. The
firs
t let
ter
has
been
writ
ten
for
you.
CG
DE
AH
FB
Nam
e:
C
lass
:
Dat
e:
Th
e L
ife
Cy
cle
of
Pla
nts
Co
nso
lid
atio
n W
ork
shee
t 1W
hy D
o P
lants
Rep
rod
uce
? /
Wha
t H
ap
pen
s in
the
Life
Cycl
e of
a F
low
erin
g P
lant?
1.
Labe
l the
diff
eren
t par
ts o
f the
flow
er a
s sh
own
belo
w.
Polle
n gr
ain
Filam
ent
Stig
ma
Ovu
le
Ant
her O
vary
Styl
e
Peta
l
© 2012 Alston Publishing House Pte Ltd Science SMART Teacher’s Guide Grade 5 83
The
Life
Cyc
leo
f P
lan
ts
Ans
wer
s to
Add
ition
al T
each
er’s
Res
ourc
esA
nsw
ers
to A
dditi
onal
Tea
cher
’s R
esou
rces
Nam
e:
C
lass
:
Dat
e:
Fu
n a
nd
G
ames
Th
e L
ife
Cy
cle
of
Pla
nts
12
3
4
5
6
7 8
9
10
Com
plet
e th
e cr
ossw
ord
puzz
le u
sing
the
clue
s gi
ven
belo
w.
Acr
oss:
1. Fe
rtilis
atio
n is
the
of a
mal
e re
prod
uctiv
e ce
ll with
a fe
mal
e re
prod
uctiv
e ce
ll.4.
A
typi
cal s
eed
is m
ade
up o
f an
, see
d le
aves
and
a s
eed
coat
.6.
Th
e pr
oces
s in
whi
ch a
see
d gr
ows
into
a s
eedl
ing
is ca
lled
.
Cro
ssw
ord
Pu
zzle
!
FS
N
T A MP NL T
I
W E
L I SD
S RA
S E D
T SI
H
I
G CE
M AD
A RA R
EB E
A
Y MI
M GN
R RT
O AD
I OP
NE
ON
N
UI
G
Nam
e:
C
lass
:
Dat
e:
Th
e L
ife
Cy
cle
of
Pla
nts
Co
nso
lid
atio
n W
ork
shee
t 2W
ha
t Is
See
d D
isp
ersa
l?
Com
plet
e th
e ta
ble
belo
w b
y fil
ling
in th
e bl
anks
with
sui
tabl
e w
ords
.
Met
hod
of s
eed
disp
ersa
lC
hara
cter
istic
s of
fru
its/s
eeds
By w
ind
•Se
edsare
and
ligh
t.
•Se
edsmay
hav
e-li
ke s
truc
ture
s or
to
hel
p th
em s
tay
aflo
at in
the
air
long
er.
By w
ater
•Fruitshav
e o
uter
cov
erin
g.
•Fruitshav
e h
usks
that
trap
air
to h
elp
them
.
By s
plitt
ing
•Fruitshav
epo
dsw
hich
bec
omedryan
dcrac
k. W
hen
ripe,
the
pod
split
s to
thro
w th
e se
eds
out w
ith a
.
By a
nim
als
•Se
edsmay
befoun
dinfr
uitsth
atare
an
d .
•Se
edsmay
hav
e,
or
stiff
th
at c
an a
ttach
them
selv
es to
the
fur
of
pass
ing
mam
mal
s.
smal
l
win
gha
irs
wat
erpr
oof
fibro
us
unev
enly
flesh
y
hook
ssp
ines
hairsed
ible
forc
e
float
84 © 2012 Alston Publishing House Pte LtdAdditional Teacher’s Resources
Ch
ap
ter 1
Ans
wer
s to
Add
ition
al T
each
er’s
Res
ourc
esA
nsw
ers
to A
dditi
onal
Tea
cher
’s R
esou
rces
Nam
e:
C
lass
:
Dat
e:
Ex
am P
ract
ice
Th
e L
ife
Cy
cle
of
Pla
nts
Pro
cess
sk
ills
: Obs
ervi
ng, A
naly
sing
Plan
ts X
and
Y g
row
nex
t to
each
oth
er. A
but
terf
ly v
isite
d a
flow
er in
Pla
nt X
and
th
en a
flow
er in
Pla
nt Y
as
show
n be
low
, bef
ore
flyin
g of
f.
a.
Fill i
n th
e bl
anks
bel
ow.
i.
The
butte
rfly
was
mos
t like
ly to
tran
sfer
pol
len
grai
ns fr
om th
e flo
wer
in
Plan
t to
the
flow
er in
Pla
nt
.
[1
mar
k]
ii.
This
type
of p
ollin
atio
n is
know
n as
.
[1 m
ark]
b.
Nam
e tw
o ch
arac
teris
tics
of p
lant
s th
at h
elp
in
po
llinat
ion
by in
sect
s su
ch a
s bu
tterf
lies.
[2 m
arks
]
Hin
t:H
ow d
o pl
ants
att
ract
the
in
sect
s?
Plan
t XPl
ant Y
XY
cros
s-po
llinat
ion
1. Br
ight
ly-c
olou
red
flow
ers
2. S
cent
ed fl
ower
s
8.
The
carp
el c
onsis
ts o
f the
, s
tyle
, ova
ry a
nd o
vule
.9.
Se
eds
disp
erse
d by
win
d ha
ve w
ing-
like
stru
ctur
es o
r th
at h
elp
them
st
ay a
float
.10
. Se
eds
of fl
eshy
frui
ts th
at a
re to
o la
rge
to b
e sw
allo
wed
may
be
by
the
anim
als
that
eat
the
frui
ts, a
way
from
thei
r pa
rent
s.
Dow
n:2.
Th
e fil
amen
t, an
ther
and
pol
len
grai
ns m
ake
up th
e o
f the
flow
er.
3.
is th
e tr
ansf
er o
f pol
len
grai
ns fr
om th
e an
ther
of a
flow
er to
the
stig
ma
of a
flow
er o
f the
sam
e sp
ecie
s.5.
M
ost f
ruits
disp
erse
d by
h
ave
fibro
us h
usks
whi
ch c
an tr
ap a
ir to
ena
ble
them
to s
tay
aflo
at.
7.
Frui
ts a
nd s
eeds
mus
t be
so
the
seed
lings
will
not c
ompe
te w
ith th
e pa
rent
pla
nt a
nd o
ne a
noth
er fo
r su
nlig
ht, w
ater
, nut
rient
s an
d sp
ace.
© 2012 Alston Publishing House Pte Ltd Science SMART Teacher’s Guide Grade 5 85
The
Life
Cyc
leo
f P
lan
ts
Glossary
GlossaryChapter 1: The Life Cycle of Plants
Anther The pollen-bearing part of a stamen
Carpel Thefemaleorganofafloweringplant,consistingofthestigma,style,ovaryandovule
Control Anexperimentalset-upthatmirrorsthetestexperimentalset-upexceptthatnothingischanged,whichisusedtocompareagainst
Cross-pollination Thetransferofpollenfromtheflowerofoneplanttotheflowerofanotherplantofthesamespecies
Dispersal Thescatteringofseedsindifferentdirections,farawayfromtheparentplants
Embryo Theimmatureplantcontainedintheseed,whichwillgrowintoanewplantundertherightconditions
Explosive action Theforcefulsplittingofseedpodsorcapsulestothrowtheseedsfarfrom the parent plant
Fertilisation Thefusingorunionofamalereproductivecellwithafemalereproductivecellduringsexualreproduction
Fibrous husk Thedryexternalcoveringofcertainfruitsorseeds,madeoffibres
Filament Thestalk-likeportionofastamen,thatsupportstheanther
Fuse Theunitingofamalereproductivecellwithafemalereproductivecellthatoccursduringfertilisation
Germination Thedevelopmentofrootsandshootsfromaseed
Hook Acurvedpieceofhardsubstanceinseeds,forcatchingonthefurofpassingmammalstohelpinseeddispersal
Ovary Thepartbelowthestyleinplants,thatcontainsandprotectstheovules
Ovule Theplantpartthatcontainsthefemalereproductivepart,whichafterfertilisationdevelopsintoaseed
Perfect flower Aflowerhavingbothstamensandcarpels
Pollen grains Theyellow,dustysubstancefoundontheanther,whichcontainsthemalereproductiveparts
Pollination The transfer of pollen from the anther to the stigma
Seed coat Theoutercoveringofaseed
Seed leaves TThepartoftheseedthatcontainastoreofnutrientsforthenewplantthatwillgrowfromtheembryo
86 © 2012 Alston Publishing House Pte Ltd
Ch
ap
ter 1
Spine Astiff,sharporpointedpartinseeds,forcatchingonthefurofpassingmammalstohelpinseeddispersal
Splitting Theforcefulbreakingopenofseedpodsorcapsulestothrowtheseedsfar from the parent plant
Self-pollination Thetransferofpollenfromtheanthertothestigmaofthesameflower,oranotherfloweronthesameplant
Stamen Thepollen-bearingmaleorganofafloweringplant,consistingofthefilamentandtheanther
Stiff hair Rigidspine-likepartinseeds,forcatchingonthefurofpassingmammalstohelpinseeddispersal
Stigma Thepartofthefemaleorganinplantsabovethestyle,thatreceivesthepollen
Style Theslenderpartofthefemaleorganofaplantthatextendsfromtheovarytothestigma
Wing-like Partofaseedshapedlikeawing,thathelpstheseedtokeepafloatstructure intheairlongertocarryitfartherawayfromtheparentplant
© 2012 Alston Publishing House Pte Ltd Science SMART Teacher’s Guide Grade 5 87
The
Life
Cyc
leo
f P
lan
ts