16Hit1600
Expression of IdeasEasy–MediumEmphasising a difference in scale

Expression of Ideas practice question

While researching a topic, a student has taken the following notes: - A hummingbird's heart beats up to 1,260 times a minute in flight. - A resting human heart beats about 70 times a minute. - Hummingbirds must eat roughly their own weight in nectar each day. - At night some hummingbirds enter torpor, slowing their heart to about 50 beats a minute.

The student wants to emphasise how fast a hummingbird's heart beats in flight. Which choice most effectively uses relevant information from the notes to accomplish this goal?

  1. A. In flight a hummingbird's heart beats up to 1,260 times a minute, roughly eighteen times the rate of a resting human heart.Correct
  2. B. Hummingbirds eat their own weight in nectar daily.
  3. C. A resting human heart beats about 70 times a minute.
  4. D. Some hummingbirds enter torpor at night.

Answer: A. In flight a hummingbird's heart beats up to 1,260 times a minute, roughly eighteen times the rate of a resting human heart.

The figure and a comparison that makes it vivid.

Why the other answers are wrong

B. Hummingbirds eat their own weight in nectar daily.
Diet, not heart rate.
C. A resting human heart beats about 70 times a minute.
The human figure alone.
D. Some hummingbirds enter torpor at night.
About slowing, not speed.

More Expression of Ideas questions

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