The Life Cycle of Plants
Name:
Consolidation Worksheet
Class:
1
Date:
Why Do Plants Reproduce? / What Happens
in the Life Cycle of a Flowering Plant?
1.
Label the different parts of the flower as shown below.
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Science SMART Teacher’s Guide Grade 5
77
2. The statements below describe various stages in the development of a
flowering plant.
A
B
C
D
E
F
G
H
Fertilisation takes place in the flower.
The ovary develops into a fruit.
A seed germinates when it receives air, warmth and water.
The adult plant bears flowers.
A flower is pollinated by wind or animals.
The ovules develop into seeds.
The seedling grows into an adult plant.
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
78
Additional Teacher’s Resources
© 2012 Alston Publishing House Pte Ltd
The Life Cycle of Plants
Name:
Class:
Consolidation Worksheet
2
Date:
What Is Seed Dispersal?
Complete the table below by filling in the blanks with suitable words.
Method of seed
dispersal
Characteristics of fruits/seeds
and light.
• Seedsare
By wind
• Seedsmayhave
-like structures or
to help them stay afloat in the air longer.
outer covering.
• Fruitshave
By water
By splitting
• Fruitshave
them
.
husks that trap air to help
• Fruitshavepodswhichbecomedryandcrack
. When ripe, the pod splits to throw the
.
seeds out with a
• Seedsmaybefoundinfruitsthatare
and
.
By animals
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• Seedsmayhave
,
or stiff
that can attach themselves to the fur of
passing mammals.
Science SMART Teacher’s Guide Grade 5
79
The Life Cycle of Plants
Name:
Class:
Fun and
Games
Date:
Crossword Puzzle!
Complete the crossword puzzle using the clues given below.
1
2
3
4
5
6
7
8
9
10
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
.
80
Additional Teacher’s Resources
© 2012 Alston Publishing House Pte Ltd
8. The carpel consists of the
, style, ovary and ovule.
9. Seedsdispersedbywindhavewing-likestructuresor
that help them
stay afloat.
by the
10.Seedsoffleshyfruitsthataretoolargetobeswallowedmaybe
animals that eat the fruits, away from their parents.
Down:
2. The filament, anther and pollen grains make up the
of the flower.
is the transfer of pollen grains from the anther of a flower to the stigma
3.
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.
so the seedlings will not compete with the
7. Fruits and seeds must be
parent plant and one another for sunlight, water, nutrients and space.
© 2012 Alston Publishing House Pte Ltd
Science SMART Teacher’s Guide Grade 5
81
The Life Cycle of Plants
Name:
Class:
Date:
Exam Practice
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.
Plant X
Plant Y
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
b. Name two characteristics of plants that help in
pollination by insects such as butterflies.
[2 marks]
82
Additional Teacher’s Resources
.
[1 mark]
Hint:
How do plants attract the
insects?
© 2012 Alston Publishing House Pte Ltd
© 2012 Alston Publishing House Pte Ltd
Science SMART Teacher’s Guide Grade 5
83
1
Class:
Date:
1.
Ovary
Filament
Anther
Pollen grain
Petal
Ovule
Style
Answers to Additional Teacher’s Resources
Stigma
Label the different parts of the flower as shown below.
Why Do Plants Reproduce? / What Happens
in the Life Cycle of a Flowering Plant?
Consolidation Worksheet
Name:
The Life Cycle of Plants
Fertilisation takes place in the flower.
The ovary develops into a fruit.
A seed germinates when it receives air, warmth and water.
The adult plant bears flowers.
A flower is pollinated by wind or animals.
The ovules develop into seeds.
The seedling grows into an adult plant.
The petals of the flower fall off.
C
G
D
E
H
F
B
The Life Cycle
of Plants
Answers to Additional Teacher’s Resources
A
Complete the sequence of the stages above by writing the letters in the boxes
provided. The first letter has been written for you.
A
B
C
D
E
F
G
H
2. The statements below describe various stages in the development of a
flowering plant.
Date:
Additional Teacher’s Resources
By animals
By splitting
By water
By wind
Method of seed
dispersal
small
and light.
husks that trap air to help
fleshy
spines or stiff
• Seedsmayhave hooks ,
hairs
that can attach themselves to the fur of
passing mammals.
• Seedsmaybefoundinfruitsthatare
and edible .
• Fruitshavepodswhichbecomedryandcrack
unevenly . When ripe, the pod splits to throw the
force .
seeds out with a
• Fruitshave fibrous
float
.
them
• Fruitshavewaterproof outer covering.
• Seedsmayhave wing -like structures or
hairs
to help them stay afloat in the air longer.
• Seedsare
Characteristics of fruits/seeds
Complete the table below by filling in the blanks with suitable words.
Class:
2
What Is Seed Dispersal?
Consolidation Worksheet
Name:
The Life Cycle of Plants
Answers to Additional Teacher’s Resources
F
U
9
4
2
H
N
E
M
A
T
S
6
A
G
M
I
I
E
B
N
E
S
R
E
P
S
D
I
S
S
N
O
I
T
I
N
I
L
L
O
P
A
T
M
Y
3
D
10
8
7
R
R
G
C
G
N
A
M
A
R
A
R
E
T
A
W
5
D
I
E
D
N
Date:
Across:
1. Fertilisation is the
of a male reproductive cell with a female reproductive
cell.
, seed leaves and a seed coat.
4. A typical seed is made up of an
.
6. The process in which a seed grows into a seedling is called
1
O
Crossword Puzzle!
Class:
Complete the crossword puzzle using the clues given below.
Fun and
Games
Name:
The Life Cycle of Plants
Answers to Additional Teacher’s Resources
Chapter 1
84
© 2012 Alston Publishing House Pte Ltd
© 2012 Alston Publishing House Pte Ltd
Science SMART Teacher’s Guide Grade 5
85
Answers to Additional Teacher’s Resources
Down:
2. The filament, anther and pollen grains make up the
of the flower.
is the transfer of pollen grains from the anther of a flower to the stigma
3.
of a flower of the same species.
have fibrous husks which can trap air to enable
5. Most fruits dispersed by
them to stay afloat.
so the seedlings will not compete with the
7. Fruits and seeds must be
parent plant and one another for sunlight, water, nutrients and space.
8. The carpel consists of the
, style, ovary and ovule.
that help them
9. Seeds dispersed by wind have wing-like structures or
stay afloat.
by the
10. Seeds of fleshy fruits that are too large to be swallowed may be
animals that eat the fruits, away from their parents.
Class:
Date:
Plant Y
2. Scented flowers
1. Brightly-coloured flowers
Hint:
How do plants attract the
insects?
[1 mark]
The Life Cycle
of Plants
Answers to Additional Teacher’s Resources
b. Name two characteristics of plants that help in
pollination by insects such as butterflies.
[2 marks]
ii. This type of pollination is known as cross-pollination .
i. The butterfly was most likely to transfer pollen grains from the flower in
Plant X to the flower in Plant Y .
[1 mark]
a. Fill in the blanks below.
Plant X
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.
Process skills: Observing, Analysing
Exam Practice
Name:
The Life Cycle of Plants
Chapter 1
Glossary
Chapter 1:
The Life Cycle of Plants
Anther
The pollen-bearing part of a stamen
Carpel
The female organ of a flowering plant, consisting of the stigma, style,
ovary and ovule
Control
An experimental set-up that mirrors the test experimental set-up except
that nothing is changed, which is used to compare against
Cross-pollination The transfer of pollen from the flower of one plant to the flower of
another plant of the same species
Dispersal
The scattering of seeds in different directions, far away from the parent
plants
Embryo
The immature plant contained in the seed, which will grow into a new
plant under the right conditions
Explosive action The forceful splitting of seed pods or capsules to throw the seeds far
from the parent plant
86
Fertilisation
The fusing or union of a male reproductive cell witha female
reproductive cell during sexual reproduction
Fibrous husk
The dry external covering of certain fruits or seeds, made of fibres
Filament
The stalk-like portion of a stamen, that supports the anther
Fuse
The uniting of a male reproductive cell with a female reproductive cell
that occurs during fertilisation
Germination
The development of roots and shoots from a seed Hook
A curved piece of hard substance in seeds, for catching on the fur of
passing mammals to help in seed dispersal
Ovary
The part below the style in plants, that contains and protects the ovules
Ovule
The plant part that contains the female reproductive part, which after
fertilisation develops into a seed
Perfect flower
A flower having both stamens and carpels
Pollen grains
The yellow, dusty substance found on the anther, which contains the
male reproductive parts
Pollination
The transfer of pollen from the anther to the stigma
Seed coat
The outer covering of a seed
Seed leaves
TThe part of the seed that contain a store of nutrients for the new plant
that will grow from the embryo
Glossary
© 2012 Alston Publishing House Pte Ltd
A stiff, sharp or pointed part in seeds, for catching on the fur of passing
mammals to help in seed dispersal
Splitting
The forceful breaking open of seed pods or capsules to throw the seeds
far from the parent plant
Self-pollination
The transfer of pollen from the anther to the stigma of the same flower,
or another flower on the same plant
Stamen
The pollen-bearing male organ of a flowering plant, consisting of the
filament and the anther
Stiff hair
Rigid spine-like part in seeds, for catching on the fur of passing
mammals to help in seed dispersal
Stigma
The part of the female organ in plants above the style, that receives the
pollen
Style
The slender part of the female organ of a plant that extends from the
ovary to the stigma
Wing-like
structure
Part of a seed shaped like a wing, that helps the seed to keep afloat
in the air longer to carry it farther away from the parent plant
© 2012 Alston Publishing House Pte Ltd
Science SMART Teacher’s Guide Grade 5
The Life Cycle
of Plants
Spine
87