Which of the following reduces the rate of transpiration by adaptations in xerophytes?
Correct answer: C. Thick waxy cuticle
- A. Large surface area of leaves
- B. Increase number of stomata
- C. Thick waxy cuticle
- D. Excessive loss of water
- E. Stomata on both sides of leaves
Explanation
Xerophytes are plants that have adaptations to survive in dry habitats with very little water. One of the adaptations is the presence of a thick waxy cuticle on the leaves, which reduces the rate of water loss by transpiration. This cuticle acts as a barrier to water loss and helps to retain water in the plant tissues. The other options, A) large surface area of leaves, B) increased number of stomata, D) excessive loss of water, and E) stomata on both sides of leaves, all lead to increased water loss by transpiration and are not adaptations for reducing water loss in xerophytes.
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Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
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