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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
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 |
Tick (✓) the appropriate answer:
Scientist who introduced binomial nomenclature is
Write down four general characters of phylum Echinodermata. Give two examples.
Name the phylum in which ambulacral system is present. What is its function?
What are adaptations in fishes due to which they are aquatic?
Write down four characters of Chondrichtyes. Give two examples.
Write down four characters of Osteichtyes and give two examples.
Give one point of difference between notochord and nerve cord.
Distinguish between polyp and medusa.
Explain the general charaters of phylum Mollusca. Give one example of following classes of Mollusca;
(i) Gastropoda;
(ii) Pelecypoda;
(iii) Cephalopoda.
Explain the general characters of phylum Arthropoda. Give one example of following classes
(i) Crustacea;
(ii) Myriapoda;
(iii) Insecta;
(iv) Arachnida.
The animals (Kingdom Animalia) are mainly grouped under two categories
Rewrite the following scientific names correctly.
ficus religiosa (peepal), zea Mays (maize) and Bombyx Mori (silk moth).
What are the group names of the following categories of animals?
Animals with three pairs of legs ___________
Name three animals (belonging to different classes) which breathe by means of lungs but have no external ears (pinnae).
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?
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 two examples of each of the following: Echinodermata
Give two examples of each of the following: Platyhelminthes
Give two examples of each of the following: Annelida
Fill in the blanks:
Nephridia are the excretory organs of ______.
Fill in the blanks:
Bath sponge belongs to phylum ______.
Choose the correct answer: The animal of phylum protozoa is
Choose the correct answer: Whittaker is famous
Choose the correct answer: Protista is the link between
Choose the correct answer: Multicellular producers are
Choose the correct answer: Binomial Nomenclature was proposed by
The binomial name of onion is ______.
What is binomial nomenclature?
Write the binomial name of
- Human being
- Paddy
Assertion (A): Reptiles are warm-blooded animals.
Reason (R): They have scales.
Give scientific reasons.
Body temperature is not constant in amphibians.
