class aves Flashcards
1
Q
It is believed that both birds and
mammals have evolved from__along different lines.
A
reptiles
2
Q
The earliest known bird fossil is that
of __
A
archaeopteryx,
3
Q
with exception of feathers archaeopteryx showed resemblance to ___
A
Dinosaur
4
Q
In __ both
ovaries and
oviducts are
functional.
A
eagles
5
Q
Archaeopteryx was size of __
A
crow
6
Q
Birds are _ blooded
A
warm-blooded (homeothermic).
7
Q
In birds The fore-limbs are modified into ___ and hind limbs for ___
A
wings
perching
8
Q
the heart of aves is __ chambered only __ aorta
A
4
right
9
Q
organ of voice in birds called __
A
syrinx
10
Q
Only __
ovary and oviduct is functional.
in birds
A
1
except eagles
11
Q
__ is used instead of teeth for crushing food in birds
A
gizzard
