question_answer

Which combination of statements is correct?

i. Our heart is enclosed in a tough flexible membrane called pericardium.

ii. A fluid is found between pericardium and heart which reduces the friction produced during heartbeat.

iii. Our heart is divided into chambers in order to prevent mixing of oxygenated blood with deoxygenated blood.

iv. Amphibians heart is not divided into chambers.

v. Fish has two chambered heart.

A) ii, iii, iv and v

B) i,ii,iv and v

C) i, iv and v

D)  i, ii, iii and v

E)  None of these