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86. Chordates: CrashCourse Biology #24
Test Description: ScienceStudyGames.com
Instructions: Answer all questions to get your test result.
1) Phylum chordata accounts for 52,000__________of vertebrates and some invertebrates on earth.
A
colonies
B
members
C
species
D
mammals
2) Through evolution, the first “bones” arrived when __________came to be.
A
sharks
B
frogs
C
fish
D
tadpoles
3) With the evolution of Tetrapods, fins were replaced with limbs and a whole new body was formed.
A
False
B
True
4) The first tetrapods were_______________.
A
humans
B
dogs
C
reptiles
D
frogs
5) Frogs were the first species to develop a __________chambered heart.
A
2
B
3
C
6
D
4
6) The amniotic egg made it possible for life exclusively on land. The egg is encased in a ________________.
A
slimy shell
B
Floating shell
C
hard shell
D
soft shell
7) This new group living exclusively on land includes reptiles, birds, frogs and mammals.
A
True
B
False
8) Reptiles live only on land.
A
False
B
True
9) Reptiles are cold-blooded, meaning they get their heat from___________.
A
the sun
B
rocks
C
each other
D
the moon
10) Birds are endotherms, meaning they __________their own heat.
A
absorb
B
make
11) Birds are the first species with a four chambered heart.
A
False
B
True
*select an answer for all questions
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