Advertisements
Advertisements
Question
What are the difficulties that you would face in classification of animals, if common fundamental features are not taken into account?
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
How do annelid animals differ from arthropods?
What are the differences between animals belonging to the Aves group and those in the mammalia group?
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 main characters of Platyhelminthes. Give two examples.
Give four general characters of phylum Mollusca. Write down two examples.
Write down four general characters of phylum Echinodermata. Give two examples.
What are differences between the following :
(a) Cartilaginous fishes and bony fishes ;
(b) Amphibia and Reptilia ;
(c) Aves and mammals.
Describe some flight adaptations of the birds.
Write short note on protochordates.
Describe general characteristics of phylum Annelida. Give one example each class of Annelida.
Explain the general characters of phylum Arthropoda. Give one example of following classes
(i) Crustacea;
(ii) Myriapoda;
(iii) Insecta;
(iv) Arachnida.
Describe the important characters of mammals and birds. Give two examples of each.
What are the group names of the following categories of animals?
Animals with a hairy skin ___________
Give any one difference between the following :
Insecta and Arachnida
Name three animals (belonging to different classes) which breathe by means of lungs but have no external ears (pinnae).
Write down a flow chart showing subdivisions of kingdom Animalia.
Give four important characters of mammals.
Write name of any poikilothermic animal.
Give two examples of each of the following: Echinodermata
Give two examples of each of the following: Nemathelminthes
Fill in the blanks:
The excretory organs of platyhelminthes are ______.
Fill in the blanks:
Nephridia are the excretory organs of ______.
Choose the correct answer: Mosquito is included in insects because
Choose the correct answer: Jelly-fish is classified in the phylum
Choose the correct answer: Which of the following is not a helminth parasite?
Choose the correct answer: 'Systema naturae' has been written by
True (or) False. If false write the correct answer.
True nucleus is seen in prokaryotic cell.
Assertion: Binomial name is the universal name and contains two names.
Reason: It was first introduced by Carolus Linnaeus
What is binomial nomenclature?
Write the binomial name of
- Human being
- Paddy
Select the INCORRECT statement from the following.
Bilaterally symmetrical and acoelomate animal are exemplified by:
Give scientific reasons.
Body temperature is not constant in amphibians.
Consider the following statements:
- Annelids are true coelomates
- Poriferans are pseudocoelomates
- Aschelminthes are acoelomates
- Platyhelminthes are pseudocoelomates
Choose the correct answer from the options given below:
