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Jugar Test
1. 
Birds are...
A.
Homeotherms
B.
Poikilotherms
2. 
They are covered by...
A.
Denticles
B.
Scales
C.
Fur
D.
Feathers
3. 
They have...
A.
legs
B.
wings
C.
arms
4. 
With what do they chew their food?
A.
Teeth
B.
Horny beak
C.
Mouth
5. 
What is the gizzard for?
A.
eat
B.
store food
C.
digest food
6. 
What is the gullet/crop for?
A.
eat
B.
store food
C.
digest food
7. 
Their fertilization is...
A.
Internal
B.
External
8. 
They are....
A.
viviparous
B.
ovoviviparous
C.
oviparous
9. 
How are their bones?
A.
Solid
B.
Hollow
C.
Curved
D.
Straight
10. 
What are the air sacs?
A.
organs without air that are next to the lungs
B.
organs without air that are far from the lungs
C.
organs full of air that are next to the lungs
D.
organs full of air that are far from the lungs
11. 
birds with a long beak eat...
A.
worms
B.
seeds
C.
fish
D.
meat
12. 
birds with a short beak eat...
A.
worms
B.
seeds
C.
fish
D.
meat
13. 
birds with a strong beak eat...
A.
worms
B.
seeds
C.
fish
D.
meat
14. 
What is a scavenger?
A.
a bird or an animal that feeds on dead animals that it has killed itself
B.
a bird or an animal that feeds on dead animals that it has not killed itself
C.
a bird or an animal that feeds on living animals that it has not hunted itself
D.
a bird or an animal that feeds on living animals that it has hunted itself
15. 
Which of these is a scavenger?
A.
stork
B.
ostrich
C.
vultures