Which of the following statements with reference to 'blood' is/are correct?
1. Blood is composed of plasma and different types of cells.
2. The presence of haemoglobin makes blood appear red. Select the correct answer from the code given below:
- AOnly 1
- BBoth 1 and 2
- CNeither 1 nor 2
- DOnly 2
Show answer and explanation
Correct answer: (b) Both 1 and 2
Explanation
Blood is made of plasma (~55% liquid) and formed elements – RBCs, WBCs and platelets – so statement 1 is correct.
Haemoglobin in RBCs contains iron, which gives blood its red colour, so statement 2 is correct.
Both statements are true.