Question

Write about the phylum "Aves". Mention their characters.

Answer 1

Aves:

• All types of birds are included in this class

• Body is streamlined

• Body is devided into head, neck, trunk, tail

• Neck is long and flexible

• They are feathered bipids

• Featers are derivative of strange corneum

• Skin is dry and without gland except the Preen gland which is found in Uropygium

• A three chambered cloaca is present

• Uncinate process are present in ribs

• Kidneys are metanephric

• They are unísexuał

• Eggs are Megalecithal, large and cleiodic

Ex:-Peacock, Crow, Ostrich, Penguin