Answer:
Differences
between Pisces, Amphibia, reptilian, Aves and Mammals are as follows.
Character
Pisces
Amphibia
Reptilia
Aves
18.
Mammals
1.
Habitat
Aquatic
Terrestrial
and aquatic
Terrestrial
Arboreal
Terrestrial,
aquatic and arboreal
2.
Exoskeleton
Slimy
scales
Absent
Dry
and scaly
Feathers,
claws
Hair,
nails, etc.
3.
Respiratory organs
Gills
Gills,
lungs and skin
Lungs
Lungs
Lungs
4.
Body temperature
Cold-
blooded
Cold-blooded
Cold-
blooded
Warm-
blooded
Warm-
blooded
5.
Heart
2-chambered
3-chambered
4-chambered
4-chambered
4-chambered
6.
Locomotary organs
Fins
Limbs
Limbs;
but absent in snakes.
Wings
and Limbs
Limbs
7.
Others
Body
is streamlined. They are oviparous.
They
have webbed feet. Eggs are laid in water and larvae are aquatic.
They
are oviparous and some are viviparous, e.g., lizard and snake. Development is
external.
Body
is covered by feathers and forelimbs are modified into wings. Their bones are
hollow.
Presence
of mammary glands. There are hairs on the body and external pinna is also
present. They are viviparous.
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