Summarize Written Text Examples Practice Test 7

Read the passage below and summarize it using one sentence. You have 10 minutes to finish this task.

Summarize Written Text Examples Practice Test 7 - Electric Eels

Summarize Written Text Examples

The first time I read Von Humboldt’s tale, I thought it was completely bizarre, Catania says. Why would the eels attack the horses instead of swimming away? But then he observed the same behaviour by accident as he transferred the eels in his lab from one tank to another using a metal-rimmed net. Instead of swimming away, larger eels attacked the net by leaping out of the water.

Catania tracked the strength of the eels electric shock by attaching a voltmeter to an aluminium plate, or conductive metal strips to predator objects such as a crocodile head replica. The zap a submerged eel distributes through the water is relatively weak when it reaches the target. But when an eel touches it with its electricity-generating chin, the current travels directly to the target and has to travel through its body before it gets back to the water, Catania reported in Proceedings of the National Academy of Sciences.

This allows the eels to deliver shocks with a maximum amount of power to partially submerged land animals that invade their territory, Catania explains. It also allows them to electrify a much larger portion of the invader’s body. Catania found the eels leapt to attack, rather than receded, more often when the water in the aquarium was lower. He argues the attack lets electric eels better defend themselves during the Amazon dry season. When they’re cornered in small pools, and make easy prey.

Answer - Eels attacks by touching its electricity generating chin which delivers shock directly through the body of the invader resulting in electrifying larger portion and partially submerged land animals receive the maximum amount of shock. 

PTE Summarize Written Text Practice Test 2

Read the passage below and summarize it using one sentence. You have 10 minutes to finish this task.

PTE Summarize Written Text Practice

Summarize Written Text PTE

Summarize Written Text Question 2 - Nurse Sharks

Nurse sharks are nocturnal animals, spending the day in large inactive groups of up to 40 individuals. Hidden under submerged ledges or in crevices within the reef, the Nurse sharks seem to prefer specific resting sites and will return to them each day after the nights hunting. By night, the sharks are largely solitary. Nurse sharks spend most of their time foraging through the bottom sediments in search of food. Their diet consists primarily of crustaceans, molluscs, tunicates and other fish such as spiny lobsters, crabs, shrimps, sea urchins, octopuses, squid, marine snails and bivalves and in particularly, stingrays.

Nurse sharks are thought to take advantage of dormant fish which would otherwise be too fast for the sharks to catch, although their small mouths limit the size of prey items, the sharks have large throat cavities which are used as a sort of bellows valve. In this way, Nurse sharks are able to suck in their prey. Nurse sharks are also known to graze algae and coral.  Nurse sharks have been observed resting on the bottom with their bodies supported on their fins, possibly providing a false shelter for crustaceans which they then ambush and eat.

Answer - Nurse Sharks, spend most of the time either foraging through the bottom to find food or resting at specific sites, hunts at night and spends the day in large inactive groups.