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Selina solutions for Concise Biology Class 7 ICSE chapter 3 - Classification of Animals [Latest edition]

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Concise Biology Class 7 ICSE - Shaalaa.com

Chapter 3: Classification of Animals

Review questionsShort answer questionsPractice questionsPractice questionsExercisesExercise

Selina solutions for Concise Biology Class 7 ICSE Chapter 3 Classification of Animals Exercise Review questions

Review questions | Q 1.1

Tick (✓) the appropriate answer:   

Identify the aquatic animal with scaly skin which breathe with gills

  • Rohu

  • Tortoise

  • Sparrow

  • Rat

Review questions | Q 1.2

Tick (✓) the appropriate answer: 

The unicellular organism causing malaria 

  • Amoeba

  • Paramecium

  • Euglena

  • Plasmodium

Review questions | Q 1.3

Tick (✓) the appropriate answer: 

Identify the animal which is not an Arthropoda

  • Prawn

  • Butterfly

  • Earthwonn

  • Spider 

Review questions | Q 1.4

Tick (✓) the appropriate answer: 

Scientist who introduced binomial nomenclature is

  • Charles Darwin

  • Carolus Linnaeus

  • Robert Hooke

  • Gregor Mendel

Selina solutions for Concise Biology Class 7 ICSE Chapter 3 Classification of Animals Exercise Short answer questions

Short answer questions | Q 1.1

Give two examples of  Amphibians:

Short answer questions | Q 1.2

Give two examples of  Segmented worms:

Short answer questions | Q 1.3

Give two examples of  Reptiles: 

Short answer questions | Q 1.4

Give two examples of  Coelenterates:  

Short answer questions | Q 1.5

Give two examples of Arthropods:

Short answer questions | Q 1.6

Give two examples of Flatworms:

Short answer questions | Q 2

Give names of two animals which are found as parasites inside the human intestine.  

Short answer questions | Q 3.1

Name one example of the animal which shows the following characteristics: 

Fixed animals with a pore-bearing body:

Short answer questions | Q 3.2

Name one example of the animal which shows the following characteristics: 

Star-shaped body:

Short answer questions | Q 3.3

Name one example of the animal which shows the following characteristics: 

Can live in water as well as on land:

Short answer questions | Q 3.4

Name one example of the animal which shows the following characteristics: 

Has a flattened ribbon-like body: 

Short answer questions | Q 4.1

Write one difference between the following pair:  

Porifera and Coelenterata.

Short answer questions | Q 4.2

Write one difference between the following pair:  

Arthropoda and Mollusca.

Short answer questions | Q 4.3

Write one difference between the following pair: 

Invertebrates and Vertebrates  

Short answer questions | Q 4.4

Write one difference between the following pair: 

Platyheminthes and Nematoda  

Short answer questions | Q 5

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
Short answer questions | Q 6

Write the characteristics of class Aves with reference to their body covering and jaws.  

Short answer questions | Q 7

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 Class 7 ICSE Chapter 3 Classification of Animals Exercise Practice questions, Practice questions

Practice questions | Q 1

Fill in the blank.  

.................. do not have a backbone, while vertebrates have it. 

Practice questions | Q 2

Fill in the blank. 

Cnidarians have ................ symmetrical body.

Practice questions | Q 3

Fill in the blank. 

..................... and liver fluke live in the intestines of human beings and cattle.

Practice questions | Q 4

Fill in the blank. 

........................... are considered as farmers’ friend of farmers.

Practice questions | Q 5

Fill in the blank.

Annelids have special organs of excretion called ..............

Practice questions | Q 6

Fill in the blank. 

...................... live in the digestive tract of many vertebrates including human beings.

Practice questions | Q 7

Fill in the blank. 

Most arthropods have a tough outer body covering called ..........................

Selina solutions for Concise Biology Class 7 ICSE Chapter 3 Classification of Animals Exercise Practice questions

Practice questions | Q 1

Fill in the blank. 

................. have three pairs of jointed legs.

Practice questions | Q 2

Fill in the blank. 

Some .....................have two pairs of legs per segment.

Practice questions | Q 3

Fill in the blank.

A ................. has an external coiled shell.

Practice questions | Q 4

Fill in the blank. 

................. is an example of a crustacean.

Selina solutions for Concise Biology Class 7 ICSE Chapter 3 Classification of Animals Exercise Exercises

Exercises | Q 1

Select the most appropriate answer.  

The finger-like structures present around the mouth of cnidarians are called

  • pseudopodia

  • tentacles

  • spines

  • bristles

Exercises | Q 2

Select the most appropriate answer. 

 Organs of excretion in annelids are

  • gills

  • nephridia

  • suckers

  • lungs

Exercises | Q 3

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.

Exercises | Q 4

Select the most appropriate answer. 

Scorpions and spiders are

  • crustaceans

  • arachnids

  • myriapods

  • insects

Exercises | Q 5

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. 

Exercises | Q 6

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

Exercises | Q 7

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 Class 7 ICSE Chapter 3 Classification of Animals Exercise, Exercises

Exercise | Q 1

Fill in the blank. 

The animals without a backbone whose body is soft and often covered by a hard shell are .................

Exercises | Q 2

Fill in the blank. 

Invertebrates with jointed legs belong to ....................

Exercises | Q 3

Fill in the blank. 

The backbone of vertebrates is made up of a number of small bones called .....................

Exercises | Q 4

Fill in the blank. 

Fishes obtain oxygen from water through ......................

Exercises | Q 5

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 Class 7 ICSE Chapter 3 Classification of Animals Exercise Exercises

Exercises | Q 1

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 Class 7 ICSE Chapter 3 Classification of Animals Exercise Exercises

Exercises | Q 1

Differentiate between 

flatworms and roundworms   

Exercises | Q 2

Differentiate between 

insects and crustaceans  

Exercises | Q 3

Differentiate between 

amphibians and Pisces 

Exercises | Q 4

Differentiate between 

aves and mammals  

Exercises | Q 5

Differentiate between 

radially symmetrical and bilaterally symmetrical body 

Exercises | Q 6

Differentiate between 

warm-blooded and cold-blooded animals.

Selina solutions for Concise Biology Class 7 ICSE Chapter 3 Classification of Animals Exercise Exercises

Exercises | Q 1

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

Exercises | Q 2

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

Exercises | Q 3

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

Exercises | Q 4

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

Exercises | Q 5

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 Class 7 ICSE Chapter 3 Classification of Animals Exercise Exercises

Exercises | Q 1

Find the odd one out. Give reason. 

ant, cockroach, spider, dragonfly  

Exercises | Q 2

Find the odd one out. Give reason. 

frog, shark, seahorse, carp 

Exercises | Q 3

Find the odd one out. Give reason. 

snail, oyster, earthworm, octopus 

Exercises | Q 4

Find the odd one out. Give reason. 

snake, alligator, eel, turtle 

Exercises | Q 5

Find the odd one out. Give reason. 

sea urchin, starfish, brittle star, jellyfish

Exercises | Q 6

Find the odd one out. Give reason. 

jellyfish, hydra, sea anemone, butterfly 

Selina solutions for Concise Biology Class 7 ICSE Chapter 3 Classification of Animals Exercise Exercises

Exercises | Q 1

Write a short answer.

What are invertebrates ?

Exercises | Q 2.1

Write a short answer.

What do you mean by the radially symmetrical body?

Exercises | Q 2.2

Write a short answer.

Give two examples of Platyhelminthes.

Exercises | Q 3

Write a short answer.

Name the special organs of excretion in annelids?

Exercises | Q 4

Write a short answer.

What is an exoskeleton? How is it different from a backbone?

Exercises | Q 5

Write a short answer.

Write two examples of myriapods.

Exercises | Q 6

Write a short answer.

How are the bones of birds different from those of other vertebrates?

Selina solutions for Concise Biology Class 7 ICSE Chapter 3 Classification of Animals Exercise Exercises

Exercises | Q 1

Answer in detail.

Write a short note on annelids.

Exercises | Q 2

Answer in detail.

Name the different classes of arthropods. Write one characteristic feature of each class.

Exercises | Q 3.1

Answer in detail.

Write two characteristics of birds.

Exercises | Q 3.2

Answer in detail.

Write two characteristics of amphibians.

Exercises | Q 3.3

Answer in detail.

Write two characteristics of the reptiles.

Exercises | Q 3.4

Answer in detail.

Write two characteristics of mammals

Exercises | Q 4

Answer in detail.

List two notable characteristic of birds which is not found in any other group of animals?

Exercises | Q 5

Answer in detail.

Why are mammals regarded as the most advanced animals?

Exercises | Q 6

Answer in detail.

How will you classify animals according to the food they eat?

Exercises | Q 7

Answer in detail.

List four characteristics of reptiles.

Exercises | Q 8

Answer in detail.

How do fish exchange gases?

Exercises | Q 9

Answer in detail.

How are the bones of birds different from those of other vertebrates?

Exercises | Q 10

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.

Exercises | Q 11

Answer in detail.

How do warm-blooded and cold-blooded animals differ?

Selina solutions for Concise Biology Class 7 ICSE Chapter 3 Classification of Animals Exercise Exercises

Exercises | Q 1

Classify the given animals into different categories indicated. 

Jellyfish, liver fluke, pinworm, Ascaris, tapeworm, Hydra, sea anemone into cnidarians, Platyhelminthes, and Nemathelminthes.

Exercises | Q 2

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 Class 7 ICSE Chapter 3 Classification of Animals Exercise Exercises

Exercises | Q 1

Give reason for the following.

What happens to the body temperature of a fish when the temperature of water drops?

Exercises | Q 2

Give a reason for the following.

Why do adult amphibians tend to stay near water?

Selina solutions for Concise Biology Class 7 ICSE Chapter 3 Classification of Animals Exercise Exercises

Exercises | Q 1

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  

Chapter 3: Classification of Animals

Review questionsShort answer questionsPractice questionsPractice questionsExercisesExercise
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Concise Biology Class 7 ICSE - Shaalaa.com

Selina solutions for Concise Biology Class 7 ICSE chapter 3 - Classification of Animals

Selina solutions for Concise Biology Class 7 ICSE chapter 3 (Classification of Animals) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Biology Class 7 ICSE solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Concise Biology Class 7 ICSE chapter 3 Classification of Animals are Concept of Animalia, Concept of Vertebrates, Invertebrates - Phyla, Porifera, Cnidaria, Coelenterata, Platyhelminthes, Nematoda, Annelida, Arthropoda, Mollusca, Echinodermata, Phylum.

Using Selina Class 7 solutions Classification of Animals exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 7 prefer Selina Textbook Solutions to score more in exam.

Get the free view of chapter 3 Classification of Animals Class 7 extra questions for Concise Biology Class 7 ICSE and can use Shaalaa.com to keep it handy for your exam preparation

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