Refer to the given flow chart and select the correct option regarding it.
A I could be undigested food in the form of faeces; II could be toxic waste like urine and
III could be carbon dioxide rich air.
B Food pipe and windpipe are parts of organ
system P, nose and lungs are parts of organ
system R whereas intestine and kidneys
are parts of organ system S.
C Heart and blood vessels are parts of organ
system Q which is the main transporting
system of human body.
D Both A and C