Question

What characteristics did these plants have at high altitude?

A) They were smaller in size and had thicker leaves.
B) They were larger in size and had broader leaves.
C) They had a unique blue coloration.
D) They produced more flowers than plants at lower altitudes.

Answer 1

High-altitude plants typically have adaptations such as being smaller in size and having thicker leaves to conserve water and withstand colder temperatures. Therefore, the correct answer is A) They were smaller in size and had thicker leaves.

Step-by-step explanation:

Plants that grow at high altitudes, such as above 2,500 meters, have particular adaptations that enable them to survive in challenging conditions such as lower temperatures, higher UV radiation, and reduced air pressure. These adaptations often include being smaller in size and having thicker leaves. This helps to minimize water loss and reduce the risk of freezing. The smaller size also reduces the exposure to harsh wind and cold temperatures. Conversely, plants in lower altitudes or tropical rainforests are adapted to maximize sun absorption, with larger surface areas for their leaves.

Therefore, the correct answer to the question about the characteristics of high altitude plants is A) They were smaller in size and had thicker leaves. This answer is supported by an understanding of plant adaptations to various environmental conditions, including those found in high-altitude ecosystems.