DP Biology (first assessment 2025)

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Question 23M.1A.HL.TZ1.39

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Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.1A.HL.TZ1.39
Level HL Paper 1A Time zone TZ1
Command term Question number 39 Adapted from N/A
39.
[Maximum mark: 1]
23M.1A.HL.TZ1.39

Merriam’s kangaroo rat (Dipodomys merriami) is a small mammal found in desert biomes in the southwestern USA and Mexico. What would help these kangaroo rats to conserve water in order to survive high temperatures in desert biomes?

A.  Increased sweating

B.  A long loop of Henle

C.  Decreased secretion of ADH

D.  Decreased reabsorption from the collecting duct

[1]

Markscheme

B

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