IB Biology HL 1.1.12 Heat generation Question Bank

Practise IB Biology HL 1.1.12 by applying heat generation concepts to exam-style questions.

Exam points

identify the relevant biological structure, process or evidence
apply the correct biological mechanism to the question
evaluate the result using data, adaptation or ecological reasoning

[Maximum number: 4]

Common bottlenose dolphins, Tursiops truncatus, are marine mammals of temperate and tropical oceans throughout the world, where they feed on fish, squid and crustaceans.

Research has been carried out on a population of these dolphins in Sarasota Bay, Florida. The table shows the mean sea surface temperature in Sarasota Bay and catch per unit effort (CPUE) in winter and summer. A large CPUE indicates it would take little effort for the dolphin to catch a lot of prey.

Table for Question C1.1.12 (HL)—Heat generation question 1 — IB Biology HL

(a)

Explain the differences in BMR between desert and polar mammals up to a mass of $10^{3} \mathrm{~g}$ .

[ 2 ]

(b)

Above a body mass of 10 kg , there is little difference in BMR between desert and polar mammals. Suggest reasons for this.

[ 2 ]

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C1.1.12 (HL)—Heat generation question 1

Question (a)

Question (b)