Listening Test 1 – Part 4

Computer-based IELTS practice · free

  • •Part 4: questions 31–40. Time allowed: 10 minutes.
  • •Each recording is played ONCE only. Read the questions before you press play.
  • •Write your answers while you listen. Spelling counts.
  • •Use the question numbers at the bottom to move between questions. Flag questions to review later.
  • •Put on your headphones and turn up the volume.
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IB
10:00

Part 4

Listen and answer questions 31–40.

Situation: You will hear part of a lecture about bioluminescence in the ocean.

Questions 31–40

Complete the notes below. Write ONE WORD ONLY for each answer.

Bioluminescence in the ocean

Introduction
On land, the best-known example is the
About 76% of open-ocean animals can produce light
How light is produced
Luciferin reacts with
An controls the reaction
Most ocean light is because it travels furthest in water
Functions
Defence: shrimp release a glowing cloud to confuse a
Squid remove their own using counter-illumination
Hunting: the anglerfish uses a glowing
Communication: flashes help animals find a
Research and uses
Nets damage the animals' bodies, so researchers use vehicles with special
A protein from a jellyfish is now used in