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14 abr 2014

SCIENCE 3 UNIT 5 - PLANTS


UNIT 5
Page 55.
2nd How can you classify the plants in photos a – h?
a)          Tree
b)         Bush
c)          Tree
d)         Bush
e)         Bush
f)          Grass
g)          Bush
h)         Tree
3rd What parts of these plants can you identify?
TREES: leaves, branches, twigs, flowers, fruits, a trunk and roots.
BUSHES AND GRASS: leaves, stems, flowers, fruits and roots.
5th True or false? Copy the sentences and correct the ones that are false.
a)          Grasses are thin and rigid. FALSE
Grasses are thin and flexible.
b)         Bushes have low branches. TRUE
c)          Trees have thin and flexible stems. FALSE
Trees have a thick and hard stem called trunk.
Page 56.
1st What parts do plants have?
Plants have roots, stems and leaves.
2nd What are the functions of roots/stems/leaves?
Roots absorb water and minerals. They fix the plant into the ground.
Stems carry water and minerals from the roots to the rest of the plant.
Leaves use sunlight to help make their own food.
3rd What is the difference between deciduous trees and evergreen trees?
Deciduous trees lose all their leaves in autumn and evergreen trees produce new leaves all year.
Page 57.
2nd Identify the plants in photos a–c.
a)          Bush.
b)         Tree
c)          Grass
3rd Copy and complete the chart with the information.

What type of plant is it?
Does it have flowers?
Does it have fruit?
fir
tree
no
yes
blackberry
bush
yes
yes
wheat
grass
no
yes

Page 58.
Copy and complete the chart.
LEAF
SIZE
MARGIN
lemon tree
medium
entire

Page 59.
2nd Why do some plants have colourful petals?
Because they attract insects into the flower.
4th What parts of the flowers can you identify in photos a, b and c?
a)                              Petals, carpel, sepals and stamens.
b)                            Petals, sepals and stamens.
c)                              Petals, stamens, sepals and carpel.
Page 61.
1st Look at photos a – i. What do we need plants for?
a)                              Furniture: tables, chairs…
b)                            Paper, card and cardboard.
c)                              Clothes: t-shirts, jeans, jumpers.
d)                            Wood: doors, windows…
e)                             Firewood: heat.
f)                              Food: vitamins and minerals.
g)                             Food: vitamins and minerals.
h)                            Medicine.
i)                                 Food.
2nd Identify objects in your classroom made from plants. Make a list.
Cupboards, books, tables, chairs, paper…



Page 64.
1st Copy and complete the word maps.
CLASSIFYING PLANTS
 

TREES                            BUSHESS                      GRASSES
PARTS OF A PLANT
ROOTS              STEMS        LEAVES
HARD   SOFT
PARTS OF A FLOWER
SEPALS              CARPEL        STAMENS         PETALS

2nd Use the word map to copy and complete the sentences.
a)         We can classify plants as trees, bushes or grasses.
b)       Plants have roots, stems, and leaves.
c)         Stems can be hard or soft.
d)       Sepals protect the flower before it opens.
e)        Petals attract insects to the flower.
f)         Stamens have pollen at their ends.
g)        The carpel is the part of the flower where the seeds develop.

Page 65.
3rd Order and copy the sentences about the life cycle of a plant.
1.            The seed germinates.
2.         Roots grow down from the seed.
3.         A stem grows up.
4.         Leaves grow on the stem.
5.         A flower grows on the plant.
6.         Seeds develop in the carpel.
7.         The plant dies, but new plants can grow from the seeds.
4th Identify the plant parts a-c. Match the sentences.
A.       This part of the plant helps the plant make its own food. LEAVES
B.         This part of the plant carries water and minerals to the rest of the plant. STEM
C.         This part of the plant absorbs water and minerals and fixes the plant to the ground. ROOTS
5th Copy and label the parts of a flower.
6th Choose the correct word and write the sentence.
Plants that lose all their leaves in autumn are deciduous.

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