A Brief Account of Evolution
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BIOXII07:EVOLUTION

346282 We know much about fossil fishes, snails and corals but not much about ancient sea weeds. Why do you suppose this is the case?

1 A mass extinction wiped out the sea weeds but animals survived.
2 Plants moved onto land leaving only animals in the sea.
3 There were no sea weeds in the ancient oceans.
4 Sea weeds were too soft to fossilize well.
BIOXII07:EVOLUTION

346283 Match the column I with Column II
Column I
Column II
A
Mesozoic
P
First amphibians
B
Devonian
Q
300-250 mya
C
Palacocene
R
160 million years
D
Permian
S
Radiation of primitive mammals

1 \(\mathrm{A}-\mathrm{R}, \mathrm{B}-\mathrm{P}, \mathrm{C}-\mathrm{R}, \mathrm{D}-\mathrm{Q}\)
2 \(\mathrm{A}-\mathrm{R}, \mathrm{B}-\mathrm{P}, \mathrm{C}-\mathrm{S}, \mathrm{D}-\mathrm{Q}\)
3 \(\mathrm{A}-\mathrm{P}, \mathrm{B}-\mathrm{R}, \mathrm{C}-\mathrm{Q}, \mathrm{D}-\mathrm{S}\)
4 \(\mathrm{A}-\mathrm{Q}, \mathrm{B}-\mathrm{P}, \mathrm{C}-\mathrm{R}, \mathrm{D}-\mathrm{S}\)
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BIOXII07:EVOLUTION

346282 We know much about fossil fishes, snails and corals but not much about ancient sea weeds. Why do you suppose this is the case?

1 A mass extinction wiped out the sea weeds but animals survived.
2 Plants moved onto land leaving only animals in the sea.
3 There were no sea weeds in the ancient oceans.
4 Sea weeds were too soft to fossilize well.
BIOXII07:EVOLUTION

346283 Match the column I with Column II
Column I
Column II
A
Mesozoic
P
First amphibians
B
Devonian
Q
300-250 mya
C
Palacocene
R
160 million years
D
Permian
S
Radiation of primitive mammals

1 \(\mathrm{A}-\mathrm{R}, \mathrm{B}-\mathrm{P}, \mathrm{C}-\mathrm{R}, \mathrm{D}-\mathrm{Q}\)
2 \(\mathrm{A}-\mathrm{R}, \mathrm{B}-\mathrm{P}, \mathrm{C}-\mathrm{S}, \mathrm{D}-\mathrm{Q}\)
3 \(\mathrm{A}-\mathrm{P}, \mathrm{B}-\mathrm{R}, \mathrm{C}-\mathrm{Q}, \mathrm{D}-\mathrm{S}\)
4 \(\mathrm{A}-\mathrm{Q}, \mathrm{B}-\mathrm{P}, \mathrm{C}-\mathrm{R}, \mathrm{D}-\mathrm{S}\)
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