Questions 1 - 10:
Complete the notes below. Write NO MORE THAN TWO WORDS for each answer.
Importance of sleep in animals
• Compared to those without food, animals without sleep are more likely to suffer from 1
• Sleep is necessary for all animals, whether they are reptiles, 2 or fish.
Differences in animals’ sleep and reasons for their ways of resting
♦ Dolphins
• swim to the surface when sleeping, because they need to 3
♦ Birds
• are constantly 4 in the presence of numerous predators.
♦ Horses
• do most of their sleeping standing up.
• do occasionally take short naps lying down. Lying in one position for a long time could well injure a horse, because their 5 are delicate.
Potential problems encountering
• Animals can also have 6, the same as humans.
Importance of sleep in humans
• It helps us to organise our 7 of the day.
• It plays a key role in 8
e.g.
• Because of the similar sleeping pattern to that in humans, 9 are studied in order to increase our knowledge of human physiology.
• Scientists choose to study the 10 of the fruit fly in order to know the function of the human gene and understand developmental processes in humans.