Active multicellular animals require a specialized system to transport oxygen, whereas large plants do not have a specialized oxygen-transport system.
Which of the following statements, A to D, correctly explains this difference?
Plants have a smaller overall surface area to volume ratio than animals.
Plant cells have a lower metabolic rate, so their demand for oxygen is much lower.
Plants perform photosynthesis, which generates enough ATP to eliminate the need for respiration.
Plants can transport oxygen rapidly via active transport in the phloem.
