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JAMB Biology 2023 Objective — Question 3

Question 3 of 40 from the Joint Admissions and Matriculation Board (JAMB) Biology 2023 Objective paper, with the correct answer and a full explanation.

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Which of the following is an adaptation for water conservation?

  • A. prominent stomata in leaves
  • B. spiny leavesCorrect
  • C. spongy mesophyll
  • D. broad leaves

Explanation

The larger the surface area of leaves, the higher the transpirational water loss; spiny (reduced) leaves minimize this loss to the barest minimum, while broad leaves would allow much greater water loss.

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