Questions 1-10

D is wrong because scientists do now understand the 
three life stages of the scyphozoa. 
Questions 37–40 
37  C
1
st
 paragraph. We are told that during the 20
th
 century, 
massive nets and mechanical winches often damaged 
jellyfish specimens. But now in Norway and the 
Arctic scientists have ‘discovered that sound bounces 
harmlessly off jellyfish’ and for this reason scientists ‘are 
using sonar to monitor jellyfish’.
38  E
2
nd
 paragraph. ‘numerous additional species of jellyfish 
unknown to science only a few years ago’ = there are 
more types of jellyfish than previously realised
39  A
4
th
 paragraph. ‘they shut down their bodies and rest in 
much the same way that humans do at night’ = it was 
wrong to assume that jellyfish do not sleep
40  D
6
th
 paragraph. ‘certain jellyfish are able to revert to an 
earlier physical state, leading to the assertion that they 
are immortal’ = it has been claimed that one particular 
type of jellyfish may be able to live forever