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QUESTION-TYPE BASED TESTS
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G.
The study discovered that the crocodiles’ metabolic engines function slowly, creating waste and
exhausting water and fat reserves. Waste is stored in the urine, becoming more and more concentrated.
Nevertheless, the concentration of waste products in blood doesn’t fluctuate much, allowing the crocodiles
to carry on their normal functions. Besides, even though the crocodiles lost water reserves and body weight
when underground, the losses were proportional; upon emerging, the aestivating animals had no dehydration
and displayed no other harmful effects such as a slowed-down growth rate. The two researchers reckon that
this capacity of crocodiles to get themselves through the harsh times and the long starvation periods is sure
to be the answer to the crocodilian line’s survival throughout history.
Questions 1-6
Complete the summary below. Choose
NO MORE THAN TWO WORDS
from the passage for each answer.
In many places inhabited by crocodilians, most types of crocodiles have evolved a successful scheme
to survive in the drought brought by a
1
……………..
. According to Kennett and Christian’s six-year study
of Australian freshwater crocodiles’ aestivation, they found aestivating crocodiles spent around
2
……………..
of the year and had no access to
3
……………..
The amount of water in the body declined
proportionately with
4
……………..
; thus there is no sign of
5
……………..
and other health-damaging
impact on the crocodiles even after an aestivation period. This super capacity helps crocodiles endure the
tough drought without slowing their speed of
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