The group of organisms belonging to one or more related orders are assigned to

Different organisms belonging to different orders are placed in a single class due to the fact that

Different organisms belonging to different orders are placed in a single class due to the fact that

What is the difference between the food habits of organisms belonging to the first and the third trophic levels ? Give one example each of the organisms belonging to these two trophic levels.

Which of the following taxonomic categories includes one or more related orders ?

Which of the following taxonomic categories includes one or more related orders ?

Which of the following taxonomic categories includes one or more related orders ?

Which one single organisms or the pair of organisms is correctly? assigned to its or their named taxonomic group?

Which of the following group of organisms belongs to class phaeophyceae ?