Answer
All of the aerobic algae do the same things with carbon dioxide and oxygen: they take up carbon dioxide and, using the energy of sunlight, turn in into carbohydrates; They use oxygen, which is a byproduct of photosynthesis, in cellular respiration to extract energy from organic molecules.
Work Step by Step
This question is asking you to see that all green, photosynthetic eukaryotes share the same basic metabolic processes for photosynthesis ad cellular respiration.