UNIT- 1 LIVING
THINGS
A. Tick the correct answer from the given alternatives:
1. Animals
with backbone are called ->vertebrates
2. Which
group of vertebrates buries its eggs in soil? -> Reptiles
3. The
body of segmented worm is -> long, round and divided into rings
4. The
group with the highest number of animals is ->arthropods
5. Sea
horse is -> a fish
B. Name the following in one word.
a.
An animal with smooth scales and fin for swimming
in water. Fish.
b.
An animal with flat, ribbon like body. Flatworms
c.
The breathing organs of fish. Gills
d.
The animals that live both on land and in water. Amphibians
e.
The group of animals with backbone in their body. Vertebrates
f.
Octopus is an example of. Snails
g.
The group of vertebrates whose body is covered
with feather and has a beak in its head is called. Birds/Aves
h.
The only group of vertebrates which gives birth to
a baby. Mammals
i.
A reptile which has no limbs for locomotion is Snake.
C.
Name the following in one word.
1.
Bats ( Mammals)
2.
Liver fluke ( Flatworms)
3.
Dolphin ( Mammals)
4.
Earthworm ( Segmented worms)
5.
Crocodile ( Reptiles)
6.
Centipede ( Arthropods)
D. Name the following in one word.
a.
Long, thin parasite worm found in human intestine à Roundworm
b.
An invertebrate with beautiful wings that visits
flower to flower à Butterfly
c.
Thin flat parasite worm à Tape
worm
d.
The group of animals which live both on land and
in water à Amphibian
e.
Flying mammal à Bat
E. Write short answer to the following questions:
1.
What are the two main groups of
animals?
Ans: The two main groups of animals are as
follows: -
a.
Vertebrate b.
Invertebrate
2.
What is invertebrate?
Ans: The animals which do not
have backbone in their body is called invertebrate.
3.
What are the main
characteristics of flatworms?
Ans: The main characteristics of flatworms are as
follows:
·
They have flat, ribbon, or leaf shapedbodiesy.
·
They are parasites.
·
They get food from the animaon ls which they
live.
4. How are segmented worms different from roundworms?
Ans: The
following points shodifferenceferent between segmented worms and roundworms :
|
Segmented worms |
Round worms |
|
·
Their body is divided into several segments or rings. |
·
Their body is not divided into any segments or rings. |
|
·
They are parasites. |
·
They are not parasites. |
|
·
Examples: Earthworm, leech, etc. |
·
Examples: roundworms, pinworms, etc. |
5. List different groups of vertebrates?
Ans:
Vertebrates are the large group of animals whithatve a bony backbone in their
body. The groups of vertebrates are:
·
Fishes
·
Amphibians
·
Reptiles
·
Birds
·
Mammals
6. What are the main characteristic features of amphibians?
Ans: The
main characteristic features of amphibians are as follows: -
a. They live
both on land and in water.
b. They
breathe through the lungs, g,ills and skin.
c. Theyan lay
egg in water.
7. The bodies of both fishes and reptiles are covered with scales
but they are kept into different groups. Why?
Ans: The
bodies of both fishes and reptiles are covered with scales but they are kept
into different groups because for the following reasons: -
|
Fishes |
Reptiles |
|
·
They live in water. |
·
They live on land. |
|
·
They breathe through gills. |
·
They breathe throughthe lungs. |
|
·
They an eggs egg inside the
water. |
·
Tan hey lay egg on land. |
|
·
E.g. Sea horse, shark, salmon, goldfish, etc. |
·
E.g. Crocodile, lizard, etc. |
8. What are the main characteristic features of mammals?
Ans:
The main characteristic features of mammals are as follows: -
a. They are
warm-blooded animals.
b. They
breathe through lungs.
c. They give
birth to a young baby.
d. The body
of mammals is covered with hair.
F. Draw the picture of the following animals and write 2-
characteristics of each.
Characteristics :-
a.
It has flat or leaf-shape body.
b.
It is parasite.
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