CH:5 Plant World (N.B. T.B. AND W.B.)
CH:5 Plant World (N.B. T.B. AND W.B.)
Hard Words:
Function
Shrub
Herbs
Climbers
Support
Fibrous
Chlorophyll
Photosynthesis
Manure
Pollution
Word Meaning:
Photosynthesis
– the
process where green plants prepare their own food with sunlight, water,
chlorophyll and carbon dioxide.
festoon
– a chain or garland of flowers and leaves
germinate
– to grow from seed
seedling
–
small plant developed from the seed
lamina – the flat and the broad
part of the leaf
Textbook
Exercise
1.
Fill in the
blank with the correct option.
a.
Herbs have tender and flexible stems that
grow very close to the ground. (Shrubs/Herbs)
b.
The
part of the plant which grows below the ground is called the root system. (shoot/ root)
c.
The
root absorbs water and minerals from the
soil. (root/ stem)
d.
Fibrous roots are seen in wheat. (Fibrous roots/
Taproots)
d.
Green
plants take in carbon dioxide from the air and give out in the
process of making food. (oxygen/ carbon dioxide)
e.
A
flower changes into a fruit. (flower/leaf)
2.
Name the
following.
a.
An
example of a climber.
Ans: Grape vine
b.
The
stem of a plant which is eaten as food.
Ans: Potato
c.
The
part of the plant that makes food.
Ans: Leaf
3.
Match
the columns:
|
Column
A |
Column B |
||
|
a. |
Ginger |
a. |
Stem |
|
b. |
Grass |
b. | Fibrous root |
|
c. |
Rubber |
c. |
Plant product |
|
d. |
Bean |
d. |
Taproot |
4.
Answer the
following questions in 3 to 5 sentences.
a.
How
is a fruit formed?
Ans: Fruits are formed
from flower, when plant grows its full size.
b.
List
the different parts of the shoot system.
Ans: Stem, flowers,
leaves, buds and fruits these are the parts of the shoot system.
c.
What
is photosynthesis?
Ans: Photosynthesis is the process in
which plant leaves uses sunlight, water
and carbon dioxide to prepare food.
Workbook Exercise:
1. Match the following:
Type of plant Characteristic
a) Trees 1) Thick and strong trunks
b) Climbers 2) Tender and weak stems
c) Shrubs 3) Thin and woody stems
d) Herbs 4) Tender and flexible stems
(a) ___4___, (b) __1__, (c) __2___, (d) __3__ 2.
2. 
State whether the following
statements are true or false.
a)
The shoot system grows above the ground.
True
b)
All roots
store food within
them.
False
c)
The leaf blade is also called lamina.
True
d)
Plants can prepare their own food.
True
3. Fill in the blanks.
a)
The green colour of the
leaves is due to chlorophyll.
b)
The pores on a leaf blade through which air enters
a plant are known as stomata.
c)
A banana leaf is used to serve food.
d)
The thick
and strong stem of a fully grown tree is called a trunk.
4. Give reason for the following:
a)
Leaves are green in colour.
Because of the presence
of chlorophyll.
b)
Climbers grow along nearby
trees, fences or buildings.
Climbers have tender and weak stems and cannot stand on their own. So they need support to grow.
5.
Answer in one sentence.
a)
What is photosynthesis?
The leaves
use sunlight, water and carbon dioxide with
the help of chlorophyll to prepare
food. This process is called photosynthesis.
b)
What are taproots?
A thick main root with small roots growing
from its sides is called
a taproot.
c)
What does a
seed need to grow into a
new plant?
A seed needs enough
water, air and warmth to grow into a new plant.
d)
Which gases are involved
in the process of photosynthesis?
Carbon dioxide,
oxygen
6. Answer in brief:
a)
Write two functions of a fruit.
·
The fruit protects the seed inside
it.
·
Seeds from the fruit
give rise to new plants
b)
State any one difference between a tap root and a fibrous root.
|
Tap Root |
Fibrous Root |
|
A thick main root with small roots |
Thin roots which start
growing from the |
|
growing from
its sides |
base of the stem
in a bunch. |
7.The picture given below shows a process that takes place in all plants.
a)
Name the process shown in the picture.
Photosynthesis
b)
In which part of the plant does this process generally take place?
Leaves
|
|
8. Draw a leaf and label its parts.
9.
What
will you observe when a plant is not kept in sunlight but is provided with
enough water and air?
The leaf makes food for the plant only in
the presence of sunlight. So with no sunlight the plant will not be able to
make food even though it is provided with enough
water and air.
10.Find
four words related to plants in the given puzzle
1.
TAPROOT
2. LAMINA
3.
SEED
4. FRUIT
11. Higher Order Thinking Skills (HOTS)
What will happen
if a flower does not change
into a fruit?
Comments
Post a Comment