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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?
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उत्तर
For the classification of living organisms, common fundamental characteristics are considered.
- 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.
- 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.
- It will be difficult to establish mutual relationships between living beings.
- Other animal species cannot be developed.
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संबंधित प्रश्न
How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?
Match the following:
| Column I | Column II | ||
| (a) | Operculum | (i) | Ctenophora |
| (b) | Parapodia | (ii) | Mollusca |
| (c) | Scales | (iii) | Porifera |
| (d) | Comb plates | (iv) | Reptilia |
| (e) | Radula | (v) | Annelida |
| (f) | Hairs | (vi) | Cyclostomata and Chondrichthyes |
| (g) | Choanocytes | (vii) | Mammalia |
| (h) | Gill slits | (viii) | Osteichthyes |
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 down four characteristics of Ctenophora and give two examples.
Write down four main characters of Platyhelminthes. Give two examples.
Main characteristics of Nematoda:
What do you mean by the term coelomate animals? Give two examples.
Name the phylum in which ambulacral system is present. What is its function?
Write down four characters of Chondrichtyes. Give two examples.
Describe some flight adaptations of the birds.
Write short note on protochordates.
How do animals of Porifera differ from animals of Cnidaria?
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Explain general characteristics of phylum Platyhelminthes and Nematoda. Give two examples of each.
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.
Grasshopper-Wings, trachea, proboscis
Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Bat - Aves, Mammalia, Chordata
Match the names of animal groups in Column I with the names of animals in column II.
|
Column I (Group) |
Column II (Animals) |
|
Annelida |
Pigeon |
|
Porifera |
Snake |
|
Mollusca |
Earthworm |
|
Reptilia |
Sponge |
|
Amphibia |
Octopus |
|
Pisces |
Trout |
|
Mammal |
Rabbit |
Which names are left out that do not match and why?
Give four important characters of mammals.
Write two main characters of the following animal and name the phylum it belongs to: Jelly fish
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Name any two animals which possess compound eyes.
Write name of any poikilothermic animal.
Give two examples of each of the following: Nemathelminthes
Fill in the blanks:
Dog fish belongs to phylum ______.
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Choose the correct answer: Whittaker is famous
Choose the correct answer: Binomial Nomenclature was proposed by
True (or) False. If false write the correct answer.
True nucleus is seen in prokaryotic cell.
Write the binomial name of
- Human being
- Paddy
Write short notes on – Binomial Nomenclature.
Assertion (A): Reptiles are warm-blooded animals.
Reason (R): They have scales.
Kingdom Animalia is characterized by
