Question

write two features of each of the following pisces aves and mammalia​

Answer 1

Aves: 1. their body is covered with feathers

2. through laying eggs they produced new generation

Answer 2

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⊕Pisces :

• The animals of this group are found in both sea and fresh water .
• These animals body structure like streamlined body[Body like structure].
• These animals body of skin covered by scales.
• Gills are found for Respiratory organ.
• These animals are poikilothermic means cold blooded animal .
• These animals heart has two chamber - one auricle and one ventricle.
• Example : Dogfish , Rohu etc

⊕Aves :

• All the birds have been placed in the class .
• In birds the forelimbs are modified into wings and the body is covered with feathers.
• Lungs is the respiratory organ of this group.
• These animals are homeothermic means Warm blooded animal.
• These animals have four chamber of heart - Two auricle and two ventricle.
• These animals lays eggs so it's called Oviparous
• Example : Peacock , Ostrich etc .

⊕Mammalia :

• The animals of this class are found in all types of environment .
• These animals of heart have four chamber - two auricle and two ventricle .
• These animals are homeothermic means warm blooded animals .
• Mammalia group have  most of animals lay young ones {baby} but some exceptions - echidina lays eggs and Kangaroo gives birth {viviparous]
• In these animals have mamary gland present .
• Example : Kangaroo , Bat , etc