Information and IdeasHardDetail: how the beetle collects water
Information and Ideas practice question
The Namib desert beetle survives in a place with almost no rain by harvesting fog. Its wing cases are covered with tiny bumps that attract water, set among waxy channels that repel it. When morning fog rolls in from the coast, droplets form on the bumps, grow until they are heavy enough to move, and then run down the channels to the beetle's mouth.
According to the text, what role do the waxy channels play in the beetle's water collection?
- A. They carry droplets from the bumps to the beetle's mouth.Correct
- B. They attract fog droplets.
- C. They store water for use in the dry season.
- D. They keep the beetle cool.
Answer: A. They carry droplets from the bumps to the beetle's mouth.
The channels repel water and route it to the mouth.
Why the other answers are wrong
- B. They attract fog droplets.
- The bumps attract; the channels repel.
- C. They store water for use in the dry season.
- No storage is mentioned.
- D. They keep the beetle cool.
- Temperature is not mentioned.
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