define Animalia and its classification
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Animalia is the 5th Kingdom in the 5 kingdom classification given by R.H. Whittaker.
Kingdom Animalia consist of organisms which are multicellular, mainly heterotrophic(feeding on other organisms). They don't have a cell wall. Their cells generally have a central nucleus and small vacuoles.
1. On basis of Level of organization, they are classified as:
i) Cellular level.
ii) Tissue level.
iii) Organ level.
iv) Organ system level.
2. On basis of Symmetry, they are classified as:
i) Asymmetric-having no symmetry.
ii) Bilaterally symmetrical-symmetrical in one plane.
iii) Radially symmetrical-symmetrical in any plane.
THE KINGDOM ANIMALIA IS CLASSIFIED INTO 11 PHYLUMS:-
1. Porifera- Body with pores and canals in walls.
2. Coelenterata- Special cells named Cnidoblast are present used for anchorage, defence or to capture the prey.
3. Ctenophora- Comb plates for locomotion are present.
4. Platyhelminthes- Have flat body, many are parasites.
5. Aschelminthes- Rounded elongated bodied worms.
6. Annelida- Body is segmented.
7. Arthropoda- Tough exoskeleton is present. Legs are jointed.
8. Mollusca- Marine, external skeleton of shell is present.
9. Echinodermata- Marine with spiny body. Water vascular system is present which helps in locomotion and respiration.
10. Hemichordata- Worm like organisms with collar and trunk.
11. Chordata- Having notochord. Having gill slits in at least one stage of life.
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Kingdom Animalia consist of organisms which are multicellular, mainly heterotrophic(feeding on other organisms). They don't have a cell wall. Their cells generally have a central nucleus and small vacuoles.
1. On basis of Level of organization, they are classified as:
i) Cellular level.
ii) Tissue level.
iii) Organ level.
iv) Organ system level.
2. On basis of Symmetry, they are classified as:
i) Asymmetric-having no symmetry.
ii) Bilaterally symmetrical-symmetrical in one plane.
iii) Radially symmetrical-symmetrical in any plane.
THE KINGDOM ANIMALIA IS CLASSIFIED INTO 11 PHYLUMS:-
1. Porifera- Body with pores and canals in walls.
2. Coelenterata- Special cells named Cnidoblast are present used for anchorage, defence or to capture the prey.
3. Ctenophora- Comb plates for locomotion are present.
4. Platyhelminthes- Have flat body, many are parasites.
5. Aschelminthes- Rounded elongated bodied worms.
6. Annelida- Body is segmented.
7. Arthropoda- Tough exoskeleton is present. Legs are jointed.
8. Mollusca- Marine, external skeleton of shell is present.
9. Echinodermata- Marine with spiny body. Water vascular system is present which helps in locomotion and respiration.
10. Hemichordata- Worm like organisms with collar and trunk.
11. Chordata- Having notochord. Having gill slits in at least one stage of life.
You are free to ask anything related in the comments for more info. If you find this answer helpful then be sure to rate it as the brainliest answer!
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