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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 do annelid animals differ from arthropods?
What are the differences between animals belonging to the Aves group and those in the mammalia group?
How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?
Explain how animals in Vertebrata are classified into further subgroups.
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 |
Prepare a list of some animals that are found parasitic on human beings.
Write one difference between the following pair:
Invertebrates and Vertebrates
What is difference between bilateral symmetry and radial symmetry?
Write down four main characters of Annelida.
Write down four general characters of phylum Echinodermata.
Name the phylum in which ambulacral system is present. What is its function?
What are differences between the following:
Cartilaginous fishes and bony fishes
Write short note on protochordates.
Give one point of difference between notochord and nerve cord.
Distinguish between Nonchordata and Chordata.
What are the group names of the following categories of animals?
Animals with a hairy skin ___________
What are the group names of the following categories of animals?
Animals with three pairs of legs ___________
Give any one difference between the following :
Flatworm and Roundworm
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
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
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
Give the name of two animals that belong to phylum echinodermata.
Write the name of oviparous mammal.
Give two examples of each of the following: Arthropoda
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: Which of the following is not a helminth parasite?
Carolus Linnaeus is known as the Father of ______.
Assertion: Binomial name is the universal name and contains two names.
Reason: It was first introduced by Carolus Linnaeus
Write the binomial name of
- Human being
- Paddy
Write short notes on – Binomial Nomenclature.
Select the INCORRECT statement from the following.
Give scientific reasons.
Body temperature is not constant in amphibians.
