Standard Science Primary 6 Interactions

Which of the following is a structural adaptation of a desert plant like a cactus to reduce water loss?

A Having deep roots to reach underground water
B Having needle-like leaves (spines)
C Opening stomata during the day
D Having thick, fleshy stems to store water
Show Worked Solution

Worked Solution

Step 1: Water loss (transpiration) occurs through the surface of leaves. Step [2-9]: Spines have a very small surface area. Step [2-9]: Reducing leaf surface area significantly reduces the rate of water loss.

Correct answer: Having needle-like leaves (spines)

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free