Practice question

Answer: B) Medulla. For Excretory System, once you lock onto the key mechanism or definition, Medulla is the clear fit. If you restate the concept in your own words, location matters here: Medulla is the structure or site that matches the description. So Medulla is the clean, accurate selection. If a similar stem appears later, start from the same core fact and you will land on the same kind of answer. In class notes, highlight this same phrase next to the related diagram so the wording and the picture reinforce each other. When you practise, cover the choices first, write Medulla from memory, then reveal the letter — that habit builds real recall for Excretory System.