Ncert Exercises & Solutions

37. Answer the following

(a) name the major site where RBCs are formed.

(b) which part of heart is responsible for initating and maintaining its rhythmic activity?

(a) Bone marrow

(b) SA Node (Sino Atrial Node)

(c) Reptile have 3 chambered heart with an exception of crocodile which possess 4 chambered heart, due to the partial division of ventricle through a septum.

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