class aves

Question 1

It is believed that both birds and
mammals have evolved from__along different lines.

Answer 1

reptiles

Question 2

The earliest known bird fossil is that
of __

Answer 2

archaeopteryx,

Question 3

with exception of feathers archaeopteryx showed resemblance to ___

Answer 3

Dinosaur

Question 4

In __ both
ovaries and
oviducts are
functional.

Answer 4

eagles

Question 5

Archaeopteryx was size of __

Answer 5

crow

Question 6

Birds are _ blooded

Answer 6

warm-blooded (homeothermic).

Question 7

In birds The fore-limbs are modified into ___ and hind limbs for ___

Answer 7

wings
perching

Question 8

the heart of aves is __ chambered only __ aorta

Answer 8

4
right

Question 9

organ of voice in birds called __

Answer 9

syrinx

Question 10

Only __
ovary and oviduct is functional.
in birds

Answer 10

1
except eagles

Question 11

__ is used instead of teeth for crushing food in birds

Answer 11

gizzard