Neco Model Questions Vol1 2022 Biology Question 33

Practice objective / multiple choice question 33 from the 2022 Neco Model Questions Vol1 Biology examination.

Neco Model Questions Vol1 2022 Biology Objective / Multiple Choice Medium Difficulty
Question 33 NECO_MODEL_QUESTIONS_VOL1 • 2022 • BIOLOGY • objective

A person steps into a room where the temperature is \(5^{\circ}\text{C}\). The body responds in three ways: (i) cutaneous blood vessels constrict within seconds, (ii) shivering begins after a few minutes, and (iii) thyroid hormone secretion rises after several hours. Which of these responses contributes most to the immediate maintenance of core body temperature, and why?

Answer Options

A. Thyroid hormone secretion (response iii) because it acts within seconds, the fastest of the three mechanisms.
Correct Answer B. Cutaneous vasoconstriction (response i) because it acts within seconds, the fastest of the three mechanisms.
C. Shivering (response ii) because it acts within seconds, the fastest of the three mechanisms.
D. Cutaneous vasoconstriction (response i) because it generates heat directly, the fastest of the three mechanisms.
Correct Answer
B
Correct Option:
Cutaneous vasoconstriction (response i) because it acts within seconds, the fastest of the three mechanisms.

About This Question

This is Neco Model Questions Vol1 2022 Biology Question 33. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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