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Animal Kingdom (Non-chordata)
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2 Animal Kingdom (Non- Chordata)
1
, Animal Kingdom
Animal Kingdom covers about 35 phyla, of which 11 are considered to be major phyla.
In major phyla, 10 are from non-chordates and 1 from the chordates.
2
,Animal Kingdom
3
, Animal Kingdom
HABITAT
The place on the earth, where an animal finds optimum conditions for food and
shelter is called its habitat. Habitat can be defined as the physical and
geometrical space where an organism lives.
The habitat may be water, soil or earth’s surface. On the basis of their habitat,
animals can be of following types:
1. Terrestrial habitat:
Animals which live on land or dry earth’s surface, are said to have terrestrial
habitats.
Terrestrial animals are adapted for following types of habitat modes:
a. Aerial or flying: These animals possess wings and therefore can fly. e.g.,
Birds, bats.
b. Arboreal: These animals mainly live on trees. e.g., Bat, Monkey.
c. Fussorial: These animals live in burrows or underground. e.g., Rabbits, rat,
earthworm etc.
d. Scansorial: These animals can climb on walls, rocks etc. e.g., Wall lizard, flying
squirrel.
e. Cursorial: These animals are adapted to run very fast.
e.g., Tiger, horse, dog etc.
2. Aquatic animals:
These animals live in water. They may be fresh water or marine water.
The aquatic animals may further be of following types:
a. Zooplanktons: The animals which flow passively, with water current, on the
surface of water, are called zooplanktons. e.g., many aquatic protozoans,
larvae, crustaceans etc.
b. Nektons: These animals can float actively in water body even against water
current. e.g., many fishes such as sharks, many skates and rays.
c. Benthos: These animals live at the bottom of the water body. e.g., Deep sea
fishes, many echinodermates, sponges and corals.
d. Pelagic: These animals usually live at the surface or water body. These include
both zooplanktons and Nektons.
3. Amphibian
These animals living on land as well as in water.
HABITS
Nature of living is called habit. Animals lead various types of life and on this
basis, they are of following types:
a. Solitary animals: Animals which have singly (not in groups). e.g., Taenia,
Earthworm etc.
b. colonial animals: Animals which live in groups and form colony. e.g., Volvox,
honeybee, termites, wasp etc.
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