Question

tell me correct answer​

Answer 1

Explanation:

2) colour of blood is red due to presence of hemoglobin in which haem is iron part and globin is protein part.

1) heart is covered by pericardium

Answer 2

Answer:

1. The heart is enclosed in a double walled sac called pericardium
2. .The RBCs impart red colour to the blood due to presence of respiratory pigment hemoglobin.

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