SCI 02-19

Which would NOT be an adaptation of the fishhook barrel cactus that helps it live in the harsh desert environment?

• Flexible leafstalks that follow the Sun

• Sharp spines that keep predators away

• A thick waxy covering that holds in water

• Widely spreading roots that absorb water

Which of the following adaptations would most effectively support a large tree's survival in a forest ecosystem?

• A. A slender trunk that enhances flexibility against strong winds.

• B. Short roots optimized for capturing surface moisture.

• C. A waxy coating on leaves designed to shed excess water.

• D. Extensive deep roots that anchor the tree and provide stability.

What is one reason why plants in dry environments might have thick leaves?

• To store water.

• To attract insects.

• To grow faster.

• To produce more flowers.

Which of the following is a benefit of having deep roots for trees in dry areas?

• They help the tree grow taller.

• They allow the tree to access water deep underground.

• They make the tree more attractive.

• They help the tree produce more leaves.

Fill in the blank: Waxy leaves help plants by ______.

• Increasing water loss

• Reducing water loss

• Attracting herbivores

• Providing instability

Which adaptation helps deter herbivores from feeding on plants?

• Waxy leaves

• Thorns

• Spines

• Roots