Question

Why does respiration become more challenging for organisms as they become larger (in other words which of the following is/are true about respiratory demand)?

I. total metabolic demand increases in proportion to body mass (volume)

II. a higher surface area to volume ratio decreases the effectiveness of using diffusion alone

III. a lower surface area to volume ratio decreases the effectiveness of using diffusion alone

III only

I and III

I and II

II only

I only

Answer 1

ELUUN, Answer → Option I and II is the correct answer. [ I + Toteu metabolic demand increases in proportion to body mass C volume) 1 → a lower surface area to volume ratio decreases the effectiveness of using diffusion alone. I ( Large Puertae objects have small surface area as compared to volume)