Which of the following is not a characteristic that is used to classify the different types of algae (protist autotrophs) in the ocean? a. type of energy storage product b. presence and type of flagella c. rate of primary productivity d. type of photosynthetic pigment

         The answer right here is option C. Rate of primary productivity.

         Different types of algae are classified differenly according to the options in the question. But letter C doesn't match because think about it, how are we going to check a species just by its production of oxygen and energy rate? it's not possible, you need to check other patterns, for example, the type of photosynthetic pigment, in this way, we can check the difference because of the color difference. But talking about the production rate, the only information we can grab here is the amount of energy and oxygen it produces to the earth, and the question doesn't ask about this matter. Always pay attention to what the question is asking you, by doing this, your rate of success will increase a lot. Take care!!