Multiple choice

Which of the following plants shows ridges and grooves, sunken stomata and chlorenchyma in the stem?

  1. Opuntia

  2. Casuarina

  3. Calotropis

  4. Nerium

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

Casuarina exhibits classic xerophytic adaptations including ridges and grooves that increase surface area, sunken stomata to reduce water loss, and chlorenchyma (photosynthetic tissue) in the stem. These adaptations allow it to survive in arid conditions by conserving water while maintaining photosynthesis.