Waec Model Questions Vol1 2021 Biology Question 45

Practice objective / multiple choice question 45 from the 2021 Waec Model Questions Vol1 Biology examination.

Waec Model Questions Vol1 2021 Biology Objective / Multiple Choice Medium Difficulty
Question 45 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • objective

The labelled diagram of the human respiratory system shows that each alveolus has an average internal surface area of 0.07 mm² and that the lungs contain approximately 480 million alveoli. Estimate the total internal surface area of all alveoli in square metres.

Answer Options

Correct Answer A. 33.6 m²
B. 3.36 m²
C. 336 m²
D. 0.336 m²
Correct Answer
A
Correct Option:
33.6 m²

About This Question

This is Waec Model Questions Vol1 2021 Biology Question 45. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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