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What are the difficulties that you would face in classification of animals, if common fundamental features are not taken into account?

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प्रश्न

What are the difficulties that you would face in classification of animals, if common fundamental features are not taken into account?

संक्षेप में उत्तर
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उत्तर

For the classification of living organisms, common fundamental characteristics are considered.

  1. If we consider specific characteristics, then each organism will be placed in a separate group, and the entire objective of classification would not be achieved.
  2. The classification of animals is also important in comparing different organisms and judging their individual evolutionary significance. If only a single characteristic is considered, then this objective would not be achieved.
  3. It will be difficult to establish mutual relationships between living beings.
  4. Other animal species cannot be developed.
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अध्याय 4: Animal Kingdom - EXERCISES [पृष्ठ ५३]

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एनसीईआरटी Biology [English] Class 11
अध्याय 4 Animal Kingdom
EXERCISES | Q 1. | पृष्ठ ५३

वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

How do annelid animals differ from arthropods?


What are the differences between animals belonging to the Aves group and those in the mammalia group?


Prepare a list of some animals that are found parasitic on human beings.


Tick (✓) the appropriate answer: 

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Write one difference between the following pair: 

Invertebrates and Vertebrates  


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

What is difference between bilateral symmetry and radial symmetry?


Write down four characteristics of Ctenophora and give two examples.


Write down four main characters of Annelida.


Define the term hermaphrodite. Give two examples.


What do you mean by the term coelomate animals? Give two examples.


Write down four general characters of phylum Arthropoda. Give two examples.


What are adaptations in fishes due to which they are aquatic?


Describe some flight adaptations of the birds.


Write short note on protochordates.


Distinguish between Nonchordata and Chordata.


Explain general characteristics of phylum Platyhelminthes and Nematoda. Give two examples of each.


Explain the general characters of phylum Arthropoda. Give one example of following classes

(i) Crustacea;

(ii) Myriapoda;

(iii) Insecta;

(iv) Arachnida.


What are pisces? Classify and explain two different kinds of fishes by the help of suitable examples.


The animals (Kingdom Animalia) are mainly grouped under two categories


What are the group names of the following categories of animals?

Animals with a backbone _____________


Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.

Earthworm - Invertebrata, Annelida, Insecta


Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.

Butterfly- Insecta, Invertebrata, Mollusca


Name three animals (belonging to different classes) which breathe by means of lungs but have no external ears (pinnae).


TYRANNOSAURUS

(One of the extinct animals which lived on the Earth about 100,000,000 years ago) Tyrannosaurus was about six meters long and it preyed upon other animals.

What do you think about its classification-was it an amphibian, a reptile or a mammal?

Can you call it a relative of Kangaroo? Yes/No. Give reason


Write two main characters of the following animal and name the phylum it belongs to: Whale


Fill in the blanks:

The excretory organs of platyhelminthes are ______.


Fill in the blanks:

Bath sponge belongs to phylum ______.


Fill in the blanks:

Dog fish belongs to phylum ______.


Choose the correct answer: The animal of phylum mollusca is


Choose the correct answer: The animal of class pisces is


Choose the correct answer: 'Systema naturae' has been written by


Choose the correct answer: Binomial Nomenclature was proposed by


The binomial name of onion is ______.


Select the INCORRECT statement from the following.


Assertion (A): All vertebrates are chordates but all chordates are not vertebrate.

Reason (R): The members of subphylum vertebrata possess notochord, during the embryonic period, the notochord is replaced by a cartilaginous or bony vertebral column in adults.

In the light of the above statements, choose the correct answer from the options given below:


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