This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
ScanSolve AI Answer
Step 1: Identify the levels of biological organization from largest to smallest. Organism (man) contains organ systems. Organ systems (cardiovascular system) contain organs. Organs (heart) contain cells. Cells (red blood cell) are the smallest unit here. Step 2: Correct order: man, cardiovascular system, heart, red blood cell. Step 3: Evaluate options. Option A: man, heart, red blood cell → Incorrect (skips cardiovascular system). Option B: cardiovascular system, heart, red blood cell → Incorrect (misses man/organism). Option C: man, cardiovascular system, heart, red blood cell → Correct (matches order). Option D: cardiovascular system, heart, man → Incorrect (wrong order). C C