Question

Which of the following is the major adaptation for a plant to survive in the xerophytic conditions?

• A. Long tap root
• B. Lack of stomata
• C. Spines
• D. Stipular leaves

Answer 1

Answer: (C)

Spines

CactI are among the most drought-resistant plants on the planet, due to their absence of leaves, shallow root systems, ability to store water in their stem, spines for shade and waxy skin to seal in moisture. Xerophytes can have smaller leaves or fewer branches than other plants. An example of leaf surface reduction are the spines of a cactus. Spines also protect the plants from animals and collect moisture too.