Aves

Question 1

What does Aves mean?

Answer 1

bird

Question 2

What is the body like?

Answer 2

fusiform w/ long neck for balancing & gathering food

Question 3

What are the limbs like? what are adapted for perching, walking, & swimming

Answer 3

-paired limbs
-forelimbs adapted for flying
-posterior pair adapted for perching

Question 4

What glands do they have at the root of their tail to take care of their feather? feather?

Answer 4

-all have feathers
-oil/preen glands
-no sweat glands

Question 5

What is the skeleton like?

Answer 5

-hollow skeleton and sternum w/ keel or reduced w/ no keel

Question 6

What kind of birds don’t have a keel?

Answer 6

flightless birds

Question 7

What is the circulatory system like?

Answer 7

4 chambered heart

Question 8

How do they manage their temperature?

Answer 8

Endothermic

Question 9

What is the respiration like?

Answer 9

by slightly expansible lungs

Question 10

Do they have a bladder & what is urine like?

Answer 10

-no bladder
-semisolid urine

Question 11

What is the sex ?

Answer 11

-sexes seperat
-female w/ left ovary & oviduct only

Question 12

What is fertilization like?

Answer 12

-internal fertilization
-amniotic egg

Question 13

What is fertilization like?

Answer 13

-internal fertilization w/ direct development
-amniotic egg

Question 14

What is incubation like?

Answer 14

external incubation

Question 15

What is precocial

Answer 15

young active at hatching

Question 16

What is altricial

Answer 16

young helpless or naked

Question 17

what is the word for when the young is active at hatching

Answer 17

precocial

Question 18

What is the word for when the young helpless or naked?

Answer 18

altricial

Question 19

What reproductive organs do females lack?

Answer 19

ovary