This is false-- Primary producers are near the base of the pyramid because they get their energy right from the sun.
I hope this helps :)
My answer may not be precise, but I believe if you changed your question to "The presence of these structures indicates that the student is looking at a cell of what organism", then I would safely say a plant, because plants, unlike animals, have cell walls in addition to cell membranes. :) Hope this helps!
Blood is referred as connective tissue
