ICSE Class 7CISCE
Share
Notifications

View all notifications

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

Selina Concise Biology - Middle School for Class 7 (2018-19 Session)

Login
Create free account


      Forgot password?

Chapters

Selina Selina Concise Biology - Middle School Class 7 (2018-19 Session)

Selina Concise Biology - Middle School for Class 7 (2018-19 Session) - Shaalaa.com

Chapter 3: Classification of Animals

Chapter 3: Classification of Animals solutions [Page 0]

Tick  the appropriate answer:   

Identify the aquatic animal with scaly skin which breathe with gills 

(a) Rohu
(b) Tortoise
(c) Sparrow
(d) Rat 

Tick (✓) the appropriate answer: 

The unicellular organism causing malaria  

(a) Amoeba
(b) Paramecium
(c) Euglena
(d) Plasmodium 

Tick (✓) the appropriate answer: 

Identify the animal which is not an Arthropoda —
(a) Prawn
(b) Butterfly
(c) Earthwonn
(d) Spider 

Tick (✓) the appropriate answer: 

Scientist who introduced binomial nomenclature is 
(a) Charles Darwin
(b) Carolus Linnaeus
(c) Robert Hooke
(d) Gregor Mendel 

Chapter 3: Classification of Animals solutions [Page 0]

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: 

Chapter 3: Classification of Animals solutions [Page 0]

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

Chapter 3: Classification of Animals solutions [Page 0]

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

Fixed animals with a pore-bearing body: 

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

 Star-shaped body: 

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

Can live in water as well as on land:

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

Has a flattened ribbon-like body:  

Chapter 3: Classification of Animals solutions [Page 0]

Write one difference each between the following pairs:  

Porifera and Coelenterata. 

Write one difference each between the following pairs:  

Arthropoda and mollusca.  

Write one difference each between the following pairs: 

Invertebrates and Vertebrates  

Write one difference each between the following pairs: 

Platyheminthes and Nematoda  

Chapter 3: Classification of Animals solutions [Page 0]

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 Echindermata 
4 Toad  d Mollusca
5 Lizard  e Arthropoda
6 Starfish  f Porifera

Chapter 3: Classification of Animals solutions [Page 0]

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

Chapter 3: Classification of Animals solutions [Page 0]

Categorise 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  Ampihbians  Reptiles 
Birds  Mammals       

Chapter 3: Classification of Animals solutions [Page 0]

Fill in the blanks.  

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

Fill in the blanks. 

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

Fill in the blanks. 

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

 Fill in the blanks. 

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

Fill in the blanks.

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

Fill in the blanks. 

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

Fill in the blanks. 

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

Chapter 3: Classification of Animals solutions [Page 0]

 Fill in the blanks 

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

Fill in the blanks 

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

Fill in the blanks  

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

Fill in the blanks 

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

Chapter 3: Classification of Animals solutions [Page 0]

Select the most appropriate answer.  

The finger-like structures present around the mouth of cnidarians are called
a. pseudopodia.
b. tentacles.
c. spines.
d. bristles. 

Chapter 3: Classification of Animals solutions [Page 0]

Select the most appropriate answer. 

 Organs of excretion in annelids are 

a. gills.
b. nephridia.
c. suckers
d. lungs. 

Select the most appropriate answer. 

Annelids have a
a. soft, unsegmented, bilaterally symmetrical body.
b. soft, cylindrical, segmented, bilaterally symmetrical body.
c. soft, segmented, bilaterally symmetrical body.
d. soft, segmented, laterally symmetrical body.

Select the most appropriate answer. 

Scorpions and spiders are
a. crustaceans.
b. arachnids,
c. myriapods.
d. insects.  

 Select the most appropriate answer. 

The body temperature of warm-blooded animals
a. keeps fluctuating.
b. changes according to the temperature of the
environment.
c. does not change with the change in the temperature of the environment.
d. decreases when the temperature of the envionment increases. 

Select the most appropriate answer. 

Bones with large air cavities are present in
a. cnidarians.
b. fish.
c. annelids.
d. birds. 

Select the most appropriate answer. 

 Milk in the body of mammals is produced by
a. sweat glands.
b. salivary glands,
c. mammary lands.
d. none of these  

Chapter 3: Classification of Animals solutions [Page 0]

 Fill in the blanks. 

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

Fill in the blanks. 

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

 Fill in the blanks. 

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

Fill in the blanks. 

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

Fill in the blanks. 

Vertebrates which spend a part of their life on land but reproduce in water are called .................. 

Chapter 3: Classification of Animals solutions [Page 0]

Match the following. 

  Group     Characteristics
1. Molluscs  a. Feed milk to young ones,warm-blooded 
2. Spongers  b. bag-like body with tentales around the opening 
3. Flatworms  c. fins, gills and cold- blooded 
4. mammals  d. body with large opening aaand many small pores all over 
5. Fish  e. jointed legs, exoskeleton 
6. cnidarrians  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

Chapter 3: Classification of Animals solutions [Page 0]

Differentiate between 

flatworms and roundworms   

Differentiate between 

insects and crustaceans  

Differentiate between 

 amphibians and pisces 

Differentiate between 

 aves and mammals  

Differentiate between radially symmertical and bilaterally symmetrical body 

Differentiate between warm-blooded and cold-blooded animals.   

Chapter 3: Classification of Animals solutions [Page 0]

State if the following statements are true or false. Correct the statement if it is false.

A tapeworm is a flatworm that lives in the human intestine. 

State if the following statements are true or false. Correct the statement if it is false. 

Arthropods have a soft, outer covering called endoskeleton. 

State if the following statements are true or false. Correct the statement if it is false. 

Insects belong to the amphibian group of animals.  

State if the following statements are true or false. Correct the statement if it is false. 

Fish have fins, scales and they breathe through gills. 

State if the following statements are 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. 

Chapter 3: Classification of Animals solutions [Page 0]

Find the odd one out. Give reasons. 

 ant, cockroach, spider, dragonfly  

Find the odd one out. Give reasons. 

frog, shark, seahorse, carp  

Find the odd one out. Give reasons. 

snail, oyster, earthworm, octopus  

Find the odd one out. Give reasons. 

snake, alligator, eel, turtle  

Find the odd one out. Give reasons. 

sea urchin, starfish, brittle star, jellyfish  

Find the odd one out. Give reasons. 

 jellyfish, Hydra, sea anemone, butterfly  

Chapter 3: Classification of Animals solutions [Page 0]

What are invertebrates ? 

 

 What do you mean by radially symmetrical body ?  

Give two examples of Platyhelminthes. 

Name the special organs of excretion in annelids ? 

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

Write two examples of myriapods. 

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

Chapter 3: Classification of Animals solutions [Page 0]

Write a short note on annelids. 

 

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

Write two characteristics each of birds.

Write two characteristics each of amphibians . 

Write two characteristics each of  reptiles .


Write two characteristics each of mammals 

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

Why are mammals regarded as the most advanced animals ?

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

List four characteristics of reptiles.

How do fish exchange gases ? 

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

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.

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

Chapter 3: Classification of Animals solutions [Page 0]

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.  

Chapter 3: Classification of Animals solutions [Page 0]

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

Why do adult amphibians tend to stay near water ? 

Chapter 3: Classification of Animals solutions [Page 0]

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, sccaly 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

Selina Selina Concise Biology - Middle School Class 7 (2018-19 Session)

Selina Concise Biology - Middle School for Class 7 (2018-19 Session) - Shaalaa.com

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

Selina solutions for Class 7 Biology 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 Selina Concise Biology - Middle School for Class 7 (2018-19 Session) solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com are providing 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 Class 7 Biology 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 Biology and can use Shaalaa.com to keep it handy for your exam preparation

S
View in app×