Cambridge 19 IELTS Academic Listening Test 2 - Free Computer Based Mock Test

Part 4

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Questions

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Questions 31-40

Complete the notes below.

Write ONE WORD ONLY for each answer.

Tardigrades

– more than 1,000 species, 0.05–1.2 millimetres long

– also known as water ‘bears’ (due to how they 31 ) and ‘moss piglets’

Physical appearance

– a 32 round body and four pairs of legs

– claws or 33 for gripping

– absence of respiratory organs

– body filled with a liquid that carries both 34 and blood

– mouth shaped like a 35 with teeth called stylets

Habitat

– often found at the bottom of a lake or on plants

– very resilient and can exist in very low or high 36

Cryptobiosis

– In dry conditions, they roll into a ball called a ‘tun’.

– They stay alive with a much lower metabolism than usual.

– A type of 37 ensures their DNA is not damaged.

– Research is underway to find out how many days they can stay alive in 38

Feeding

– consume liquids, e.g., those found in moss or 39

– may eat other tardigrades

Conservation status

– They are not considered to be 40