science plants: structure & function 3... · in this process, the plant also produces oxygen...
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Pupil Workbook Year 3, Unit 4
Science
Plants: Structure & Function
Name:
Formative Assessment Scores
Notes:
Knowledge Quiz 4.4
Knowledge Quiz 4.5
Knowledge Quiz 4.1
Knowledge Quiz 4.2
Knowledge Quiz 4.3
Pupil Workbook Year 3, Unit 4
Science
Plants: Structure & Function
anther
stamen
petalsepal
ovuleovary
pistil
Science: Plants – The Functions of Parts Knowledge Organiser
What do plants need to grow?Plants need air, light, water, warmth, nutrients and room to grow. A healthy plant will survive because it can make its own food. All of the parts of the plant have a special function so that it can continue to stay healthy.
Each plant has roots, a stem and leaves. Flowering plants also produce flowers and seeds.
What is pollination?Pollination is when the pollen from the male part of one plant is moved to the female part of another plant. This allows the plant to produce seeds. Insects like bees help with pollination.
What is inside a flower?Most flowering plants have flowers which have both male and female parts. In this picture, the anther and stamen are male parts and the pistil, ovary and ovule are female parts. The petals help attract insects who move the pollen from this flower to a different flower.
What is the lifecycle of a flowering plant?Flowering plants have lifecycles like all other living things — including us!
A flowering plant will begin life as a seed — the roots and shoot will then begin to grow. We call this germination. The plant will then grow and produce flowers. Pollination happens next so that seeds can be produced and fertilised.
The plant will then disperse the seeds so that new plants can grow.
What is seed dispersal?Once seeds have been made, they need to be dispersed so that new plants can grow. Seed dispersal makes sure that the new plants are growing away from the parent plant so that they are not competing for water, sunlight and other nutrients. Some types of seed dispersal will move the new plant a long way away from the parent plant. They can be dispersed in four different ways: wind, water, animals and explosion.
How are seeds dispersed?
Seeds from plants like dandelions are specially
designed so that they can be carried long distances by the wind. Another example is the
seed of a sycamore tree.
Coconuts are seeds from palm trees and seeds like this are specially designed so that
they can float on water to new places. Another example is the
seed of a waterlily plant.
Animals help with seed dispersal in different ways.
When they eat seeds, they pass through them and are excreted
in new places. Also some seeds are designed to stick to
animals so they can be carried to new places.
Some plants can burst their seed pods when they are ready to and throw their own seeds to new locations. An example
of this is a pea pod.
flower
leaf
roots
stem
What is photosynthesis?Photosynthesis is how we explain how a plant can make its own food.
The leaves of the plant are the key part in this process.
The plant uses water, sunlight and carbon dioxide to produce sugar (which is food for the plant.)
In this process, the plant also produces oxygen — which is really good for us!
Glossary
1 flower (n) The reproductive part of the plant.
2 stem (n) The main body of the plant.
3 root (n) Lies under the soil to attach the plant to the ground.
4 leaf (n) Attaches to the stem and helps produce food.
5 shoot (n) The part of a new plant that is just beginning to grow above ground.
6 water transportation (n)
How the plant takes water from the ground through the roots and then up the stem to the leaves.
7 nutrients (n) What the plant needs so that it can stay healthy and can grow.
8 photosynthesis (n) How the plant makes its own food.
9 seed (n) Grows into a new plant.
10 life cycle (n) The changes a living thing goes through during its life.
11 pollination (n) The moving 0f pollen from one plant to another for fertilisation.
12 fertilisation (n) Happens after pollination and is how a new seed is made.
13 seed dispersal (n) The moving of seeds away from the parents plant.
14 food chain (n) Shows how each living thing gets food within its own habitat.
15 producer Any kind of green plant – a producer is the first food source in the chain.
16 consumer Cannot make its own food – a consumer eats something else in the chain.
17 herbivore An animal that only eats plants.
18 carnivore An animal that only eats meat.
19 omnivore An animal that eats both plants and meat.
20 function The purpose of something – the job it has to do.
What is the function of the plant parts?
Root Stem Leaf Flower
The roots anchor the plant into the ground and absorb
water and nutrients. They also store some food for the plant.
The stem transports water and nutrients from the roots to the leaves. It also holds the plant
up towards the sunlight.
The leaves produce food for the plant. They use sunlight,
carbon dioxide and water and this is called photosynthesis.
The flower is the part of the plant that makes seeds so
that new plants can grow. The petals attract bees
for pollination.
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Knowledge Record
Wha
t doe
s a
plan
t n
eed
in o
rder
to
grow
?
Why
do
plan
ts
have
roo
ts?
Why
do
plan
ts
have
a s
tem
?
Why
do
plan
ts
have
leav
es?
Why
do
som
e pl
ants
pro
duce
fl
ower
s?
Wha
t is
the
life
cy
cle
of a
flow
erin
g pl
ant?
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Existing Knowledge
Why do plants have different parts and what do they need in order to grow?
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Session 1:
What does a plant need in order to grow?
Key Knowledge Key Vocabulary
• The requirements of plants for life and growth • Investigations should be a fair test • Predictions are made at the beginning of an
investigation
• Nutrients • Fertiliser • Bean • Light
Task: (Talk Partners) What can we deduce about these plants from this picture?
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Independent Task:
Write up your investigation:
1. What are you trying to find out? __________________________________________________ __________________________________________________
2. What will you do to help you find out what a plant needs to grow? __________________________________________________ __________________________________________________ __________________________________________________
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3. What do you think will happen to your beans and why?
Bean 1: Water, light, air and nutrients provided
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Bean 2: ___________________________
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4. What is a fair test and how are you making this test fair?
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Bean Diary
What does a plant need in order to grow?
Each week, check on your bean plants and record what
you can see by drawing and writing a short description of each
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Week 1:
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Week 2:
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Week 3:
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Week 4:
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Week 5:
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Week 6: Results:
Picture of bean plant How was the plant kept and how did it grow?
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Session 2:
Why do plants have roots?
Key Knowledge Key Vocabulary
• Plants have roots for specific reasons • Roots are integral to the survival of a plant • Roots anchor plant into the ground • Roots absorb water and nutrients • Roots can adapt to their environment
• Anchor • Absorb • Survival • Adapt • Environment
Knowledge Quiz 4.1 1. What is the section of our investigation where we make an educated guess about what
will happen?
2. What does a test need to be so that our results can be compared?
3. How many changes can we make in order for an experiment to be a fair test?
4. Plants are living things:
5. Which of these are parts of a plant?
Conclusion Prediction Method Guess
Even Reflective Fair Exciting
0 1 2 3
True False
Roots Stem Leaves Flower
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Task: (Talk Partners)
Where are the roots of these plants?
What do you know about roots?
Partner Task:
With your partner, dig up your plant. Draw and label what you see:
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Were the roots easy to dig up? What does this tell you?
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Cut the roots. How do they feel? What does this tell you?
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Independent Task:
Why do plants have roots and what would happen without them?
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Session 3:
Why do plants have a stem?
Key Knowledge Key Vocabulary
• Plants have a stem for specific reasons • A stem is integral to the survival of a plant • A stem transports water from the roots • A stem supports the plant • We can investigate the stems of plants
• Stem • Water transportation • Support • Distributed • Conclusion
Knowledge Quiz 4.2 1. What is the name of a part of a plant we can find underground?
2. What are the functions of roots? Circle two
3. What is the name of roots that can store water for longer periods of time?
4. What is the name of roots that can search for water over larger distances?
5. How many changes can we make in order for an experiment to be a fair test?
Stem Root Leaf Flower
Absorbing water Attracting insects Anchoring Looking for worms
Surface roots Longer roots Tropical zone Tuberous roots
Surface roots Longer roots Tropical zone Tuberous roots
0 1 2 3
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Task: (Talk Partners)
Is this how a plant gets the water it needs?
Independent Task:
Write up your investigation:
Aim:
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Method:
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Fair Test:
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Draw your investigation and label the equipment you used:
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Prediction:
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Independent Task:
Draw what your flowers look like now:
Conclusion:
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Session 4: Why do plants have leaves?
Key Knowledge Key Vocabulary
• Plants have leaves for specific reasons • Plants are able to produce their own food • We call this process photosynthesis • Photosynthesis needs light, water and carbon
dioxide • Photosynthesis produces oxygen and sugar
• Photosynthesis • Carbon dioxide • Oxygen • Light • Water • Sugar
Knowledge Quiz 4.3 1. What is one function of a stem?
2. What is the name of the section of an investigation where we write what we did?
3. When we describe what we want to find out in an investigation it is known as the…
4. What are the functions of roots? Circle two
5. What is the section of an investigation where we make an educated guess about what
will happen?
Absorbing water Water transportation
Looking for worms Attracting insects
Method Thinking Prediction Resources
Method Results Target Aim
Absorbing water Attracting insects Anchoring Looking for worms
Conclusion Prediction Method Guess
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Task: (Talk Partners)
Why do plants have leaves?
Partner Task:
Fill in the boxes, using the key vocabulary, to show what happens during photosynthesis:
Key words:
• Light • Oxygen • Carbon Dioxide • Water • Sugar
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Independent Task:
What happens during photosynthesis?
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Session 5:
Why do some plants produce flowers?
Key Knowledge Key Vocabulary
• Some plants have flowers for a specific reason • There are many different parts to a flower • Flowers have male and female parts • Each part has a specific function • Flowers are an important part of plant
reproduction
• Stamen • Pistil • Anther • Ovary • Pollination • Sepal
Knowledge Quiz 4.4 1. The process through which a plant makes its own food is called…
2. Circle two requirements for photosynthesis to take place
3. Circle two products of photosynthesis
4. Where does photosynthesis take place?
5. What is one function of the stem?
Growth Respiration Photosynthesis Cooking
Carbon dioxide Oxygen Water Sugar
Carbon dioxide Oxygen Water Sugar
Stem Roots Flower Leaves
Absorbing water Water transportation
Looking for worms Attracting insects
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Task: (Talk Partners)
What do you think is inside a flower?
Partner Task:
What do you see when you take your flower apart?
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Partner Task:
Label this cross section of a flower:
Independent Task:
Match the key vocabulary to the definition:
Filament
Anther
Stamen
Sepal
Petals
Stigma
Style
Ovary
Pistil
Part of the pistil – stores the seeds.
Often brightly coloured to attract insects.
Is part of the stamen – holds the pollen.
The male part of the flower.
The female part of the flower.
Protects the flower when it is a bud.
Part of the stamen – holds up the anther.
The long stalk part of the pistil.
The sticky part at the end of the pistil.
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What happens during pollination?
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Session 6:
What is the life cycle of a flowering plant?
Residual Knowledge Key Vocabulary
• Both plants and animals have life cycles • There are specific stages in the life cycle of a plant • Key things take place during each stage of the cycle • Plants disperse their seeds in different ways
• Life cycle • Germination • Fertilisation • Seed formation • Seed dispersal
Knowledge Quiz 4.5 1. The inside of a flower contains…
2. What is the name of the female parts of the flower?
3. What is the name of the male parts of the flower?
4. Why are petals usually brightly coloured?
5. Insects are an important part of:
Male parts Female parts Male and female parts Photosynthesis
Pistil Stamen Root Leaf
Pistil Stamen Root Leaf
To look for worms
To not get trampled on To attract insects For
photosynthesis
Photosynthesis Pollination Growing Magnetism
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Task: (Talk Partners)
What is happening in the picture below?
Can you think of other examples?
Partner Task:
Place the stages of a plant life cycle in order:
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Independent Task:
Germination: __________________________________________________
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Growing & Flowering: __________________________________________________
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Pollination: __________________________________________________
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Fertilisation & Seed Formation: ____________________________________________________________________________________________________
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Seed Dispersal: __________________________________________________
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Task: (Talk Partners)
What is happening in this picture?
Partner Task:
Look at the different pictures of seeds and think carefully about how they may be dispersed.
Water
Wind
Transported by Animals
Eaten by Animals
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Explosive
Drop and Roll
Independent Task:
How do plants disperse their seeds and why is it important?
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Review: What have you learnt about the structure and function of plant parts?
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