Classification of Animals — BIOLOGY STD 6 — Question

a. Their body is covered with feathers.
b. Forelimbs are modified into wings to fly.
c. They have a homy beak with no teeth.
d. They lay eggs.
e. They have mammary glands i.e. they suckle their babies.
f. They have hollow bones.
Mammals :
a. They have hair on their body.
b. Forelimbs exist as hand, paw or hooves.
c. They have a mouth with teeth.
d. They give birth to young ones.
e. They don’t have mammary glands.
f. They have solid bones.
g. e.g. Crow, parrot. & e.g. Humans, dog.