Assertion (A): The blood of annelids is red in colour
Reason (R): The blood of annelids possess haemoglobin in red blood cells.
Correct option: (c)Assertion(A) is true and reason(R) is false.
∙ In annelids, the blood is red in colour due to the presence of haemoglobin.
∙ Haemoglobin is mostly extracellular, that is, dissolved in the blood plasma.
∙ So, the correct option is (c).