Multiple choice

Tropical plants can be kept warm during the winters in special enclosures called ________.

  1. nurseries

  2. gardens

  3. orchards

  4. greenhouses

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Heat can be trapped by glass. Hence, the temperature inside a glass enclosure will be much higher than that in the surroundings. This phenomenon was used to create an enclosure where tropical plants could be kept warm during the winters in colder climates. Such enclosures are called greenhouses.