Answer:
Amphibians
(i) They possess
dual life as they can live in aquatic as well as terrestrial habitat. They are ectothermic
(cold blooded).
(ii) They
are tetrapods (4 limbs) which facilitate movement land.
(iii) Their
limbs are evolved from the pectoral and pelvic fins.
(iv) Skin is
thin, covered by mucus and mostly remain moist, also serves as an accessory source
oxygen.
(v) They are
both gill and lung breathers; usually gills appear in the larval stage,
replaced by lungs in the adults stage.
(vi)They
possess three chambered heart with two atria and one ventricle.
(vii) The fertilization
is mostly external, females are oviparous.
(viii) Larva
is a tadpole, which metamorphosis into adult thus shaving metamorphosis.
e.g.,
Ranafrog, Nectureus (mud puppy), Salamandera (salamander).
Reptiles
(i) In
reptiles, creeping and crawling mode of locomotion is found.
(ii) They are
mostly terrestrial animals and their body is covered by dry, and cornified
skin, epidermal scales or scutes.
(iii) Lungs
are well developed and present in all stages of life.
(iv) Toes
possess claws.
(v) Appendages
are well adapted for the movement on land.
(vi) Heart
possesses a partially divided ventricle and 2 atria.
(vii) They
lay amniotic eggs which are incubate on land.
(viii) They
are poikilothermic or cold blooded animals. Temperature is regulated mechanically
and not metabolically by moving in and out; heat source is usually the sun.
(ix) fertilization
is internal They are oviparous and development of young ones is direct.
e.g., Chelone
(turtle), Naja (cobra), Crocodicus (crocodile).
You need to login to perform this action.
You will be redirected in
3 sec