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Chapters
2: Classification of Plants
▶ 3: Classification of Animals
4: Photosynthesis and Respiration
5: Excretion in Humans
6: Nervous System
7: Allergy
![Selina solutions for Concise Biology [English] Class 7 ICSE chapter 3 - Classification of Animals - Shaalaa.com](/images/concise-biology-english-class-7-icse_6:28987fccbce54175b79fe833fafb2d20.jpg "Selina solutions for Concise Biology [English] Class 7 ICSE chapter 3 - Classification of Animals")
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Solutions for Chapter 3: Classification of Animals
Below listed, you can find solutions for Chapter 3 of CISCE Selina for Concise Biology [English] Class 7 ICSE.
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Review questions
Tick (✓) the appropriate answer:
Identify the aquatic animal with scaly skin which breathe with gills
Rohu
Tortoise
Sparrow
Rat
Tick (✓) the appropriate answer:
The unicellular organism causing malaria
Amoeba
Paramecium
Euglena
Plasmodium
Tick (✓) the appropriate answer:
Identify the animal which is not an Arthropoda
Prawn
Butterfly
Earthwonn
Spider
Tick (✓) the appropriate answer:
Scientist who introduced binomial nomenclature is
Charles Darwin
Carolus Linnaeus
Robert Hooke
Gregor Mendel
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Short answer questions
Give two examples of Amphibians:
Give two examples of Segmented worms:
Give two examples of Reptiles:
Give two examples of Coelenterates:
Give two examples of Arthropods:
Give two examples of Flatworms:
Give names of two animals which are found as parasites inside the human intestine.
Name one example of the animal which shows the following characteristics:
Fixed animals with a pore-bearing body:
Name one example of the animal which shows the following characteristics:
Star-shaped body:
Name one example of the animal which shows the following characteristics:
Can live in water as well as on land:
Name one example of the animal which shows the following characteristics:
Has a flattened ribbon-like body:
Write one difference between the following pair:
Porifera and Coelenterata.
Write one difference between the following pair:
Arthropoda and Mollusca
Write one difference between the following pair:
Invertebrates and Vertebrates
Write one difference between the following pair:
Platyheminthes and Nematoda
Match the animals given under column A with their respective classification group given under column B
| Column A | Column B | ||
| 1 | Sponge | a | Amphibia |
| 2 | Snail | b | Reptilia |
| 3 | Butterfly | c | Echinodermata |
| 4 | Toad | d | Mollusca |
| 5 | Lizard | e | Arthropoda |
| 6 | Starfish | f | Porifera |
Write the characteristics of class Aves with reference to their body covering and jaws.
Categorize the following animals under their appropriate columns of classification
| Animals | ||||
| Dog | Grasshopper | Rat | Scorpin | Toad |
| Butterfly | Lizzard | Turtle | Frog | Bat |
| Snail | Honey bee | Pigeon | Liverfluke | Leech |
| Cattle | snake | Rohu | Parrot | Ascaris |
| Earthworm | Cow | Rabbit | Monkey | Elephant |
|
Classification: |
||||
| Worms | Molluscs | Fishes | Amphibians | Reptiles |
| Birds | Mammals |
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Practice questions
Fill in the blank.
.................. do not have a backbone, while vertebrates have it.
Fill in the blank.
Cnidarians have ................ symmetrical body.
Fill in the blank.
..................... and liver fluke live in the intestines of human beings and cattle.
Fill in the blank.
........................... are considered as farmers’ friend of farmers.
Fill in the blank.
Annelids have special organs of excretion called ..............
Fill in the blank.
...................... live in the digestive tract of many vertebrates including human beings.
Fill in the blank.
Most arthropods have a tough outer body covering called ..........................
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Practice questions
Fill in the blank.
................. have three pairs of jointed legs.
Fill in the blank.
Some .....................have two pairs of legs per segment.
Fill in the blank.
A ................. has an external coiled shell.
Fill in the blank.
................. is an example of a crustacean.
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Exercises
Select the most appropriate answer.
The finger-like structures present around the mouth of cnidarians are called
pseudopodia
tentacles
spines
bristles
Select the most appropriate answer.
Organs of excretion in annelids are
gills
nephridia
suckers
lungs
Select the most appropriate answer.
Annelids have a
soft, unsegmented, bilaterally symmetrical body.
soft, cylindrical, segmented, bilaterally symmetrical body.
soft, segmented, bilaterally symmetrical body.
soft, segmented, laterally symmetrical body.
Select the most appropriate answer.
Scorpions and spiders are
crustaceans
arachnids
myriapods
insects
Select the most appropriate answer.
The body temperature of warm-blooded animals
keeps fluctuating.
changes according to the temperature of the
environment.does not change with the change in the temperature of the environment.
decreases when the temperature of the environment increases.
Select the most appropriate answer.
Bones with large air cavities are present in
a. cnidarians.
b. fish.
c. annelids.
d. birds.
cnidarians
fish
annelids
birds
Select the most appropriate answer.
Milk in the body of mammals is produced by
sweat glands
salivary glands
mammary lands
none of these
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Exercise
Fill in the blank.
The animals without a backbone whose body is soft and often covered by a hard shell are .................
Fill in the blank.
Invertebrates with jointed legs belong to ....................
Fill in the blank.
The backbone of vertebrates is made up of a number of small bones called .....................
Fill in the blank.
Fishes obtain oxygen from water through ......................
Fill in the blank.
Vertebrates which spend a part of their life on land but reproduce in water are called ..................
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Exercises
Match the following.
| Group | Characteristics | ||
| 1. | Molluscs | a. | Feed milk to young ones, warm-blooded |
| 2. | Spongers | b. | bag-like body with tentacles around the opening |
| 3. | Flatworms | c. | fins, gills and cold-blooded |
| 4. | mammals | d. | body with large opening and many small pores all over |
| 5. | Fish | e. | jointed legs, exoskeleton |
| 6. | cnidarians | f. | have only one opening |
| 7. | arthropods | g. | hard shell, soft body |
| h. | cylindrical, unsegmented body with mouth at one end and anus at the posterior end |
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Exercises
Differentiate between
flatworms and roundworms
Differentiate between
insects and crustaceans
Differentiate between
amphibians and Pisces
Differentiate between
aves and mammals
Differentiate between
radially symmetrical and bilaterally symmetrical body
Differentiate between
warm-blooded and cold-blooded animals.
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Exercises
State if the following statement is true or false. Correct the statement if it is false.
A tapeworm is a flatworm that lives in the human intestine.
True
False
State if the following statement is true or false. Correct the statement if it is false.
Arthropods have a soft, outer covering called endoskeleton.
True
False
State if the following statement is true or false. Correct the statement if it is false.
Insects belong to the amphibian group of animals.
True
False
State if the following statement is true or false. Correct the statement if it is false.
Fish have fins, scales and they breathe through gills.
True
False
State if the following statement is true or false. Correct the statement if it is false.
Reptiles have a scaly skin. They lay eggs with a hard shell and are warm-blooded animals.
True
False
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Exercises
Find the odd one out. Give reason.
ant, cockroach, spider, dragonfly
Find the odd one out. Give reason.
frog, shark, seahorse, carp
Find the odd one out. Give reason.
snail, oyster, earthworm, octopus
Find the odd one out. Give reason.
snake, alligator, eel, turtle
Find the odd one out. Give reason.
sea urchin, starfish, brittle star, jellyfish
Find the odd one out. Give reason.
jellyfish, hydra, sea anemone, butterfly
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Exercises
Write a short answer.
What are invertebrates ?
Write a short answer.
What do you mean by the radially symmetrical body?
Write a short answer.
Give two examples of Platyhelminthes.
Write a short answer.
Name the special organs of excretion in annelids?
Write a short answer.
What is an exoskeleton? How is it different from a backbone?
Write a short answer.
Write two examples of myriapods.
Write a short answer.
How are the bones of birds different from those of other vertebrates?
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Exercises
Answer in detail.
Write a short note on annelids.
Answer in detail.
Name the different classes of arthropods. Write one characteristic feature of each class.
Answer in detail.
Write two characteristics of birds.
Answer in detail.
Write two characteristics of amphibians.
Answer in detail.
Write two characteristics of the reptiles.
Answer in detail.
Write two characteristics of mammals
Answer in detail.
List two notable characteristic of birds which is not found in any other group of animals?
Answer in detail.
Why are mammals regarded as the most advanced animals?
Answer in detail.
How will you classify animals according to the food they eat?
Answer in detail.
List four characteristics of reptiles.
Answer in detail.
How do fish exchange gases?
Answer in detail.
How are the bones of birds different from those of other vertebrates?
Answer in detail.
You are asked to classify an animal in the correct group. The animal has a soft body and arm-like tentacles. You dissect the animal and find that it has an internal shell. Is the animal a cnidarian or a mollusc? Explain your answer.
Answer in detail.
How do warm-blooded and cold-blooded animals differ?
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Exercises
Classify the given animals into different categories indicated.
Jellyfish, liver fluke, pinworm, Ascaris, tapeworm, Hydra, sea anemone into cnidarians, Platyhelminthes, and Nemathelminthes.
Classify the given animals into different categories indicated.
Crab, millipede, butterfly, ant, scorpion, centipede, spider, lobster, moth, prawn into arachnids, crustaceans, myriapods, and insects.
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Exercises
Give reason for the following.
What happens to the body temperature of a fish when the temperature of water drops?
Give a reason for the following.
Why do adult amphibians tend to stay near water?
Selina solutions for Concise Biology [English] Class 7 ICSE 3 Classification of Animals Exercises
Given below are groups of animals, and their characteristics features. Some of the features are incorrect. Identify the odd one out in each.
| Group | Characteristic features | Odd one out |
| Porifera | porous animals, have tentacles, fixed to surface | |
| Amphibia | cold-blooded, lungs in adults, scaly skin | |
| Aves | cold-blooded, wings, feathers, bones with large air spaces | |
| Pisces | live in water, scaly skin warm-blooded, fins for swimming |
Solutions for 3: Classification of Animals
Selina solutions for Concise Biology [English] Class 7 ICSE chapter 3 - Classification of Animals
Shaalaa.com has the CISCE Mathematics Concise Biology [English] Class 7 ICSE CISCE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Selina solutions for Mathematics Concise Biology [English] Class 7 ICSE CISCE 3 (Classification of Animals) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
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Concepts covered in Concise Biology [English] Class 7 ICSE chapter 3 Classification of Animals are Taxonomic Hierarchy of Living Organisms: Unit of Classification, Invertebrata and Vertebrata, Kingdom Animalia, Phylum: Porifera, Phylum: Cnidaria/Coelenterata, Phylum: Platyhelminthes, Invertebrate: Phylum Nematoda, Phylum: Annelida, Phylum: Arthropoda, Phylum: Mollusca, Phylum: Echinodermata, Chordata: Vertebrata.
Using Selina Concise Biology [English] Class 7 ICSE solutions Classification of Animals exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Selina Solutions are essential questions that can be asked in the final exam. Maximum CISCE Concise Biology [English] Class 7 ICSE students prefer Selina Textbook Solutions to score more in exams.
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