Câu hỏi và đáp án bài nghe Tardigrades - IELTS Cambridge 19 - Test 2 part 4
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PART 4 Questions 31-40
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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 ..................................
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Part 4, Questions 31-40
31 move
32 short
33 discs
34 oxygen
35 tube
36 temperatures
37 protein
38 space
39 seaweed
40 endagnered