Question

Human heart contains $4$ chambers, whereas cockroach has a heart with.

• A. $13$ chambers
• B. $8$ chambers
• C. $12$ chambers
• D. $2$ chambers

Answer 1

The correct option is A $13$ chambers

Human heart contains 4 chambers. Whereas cockroach's heart contains 13 chambers. Due to so many chambers, failure of any one chamber is not life-threatening for it. These chambers are funnel-shaped with tiny holes called ostia. Blood enters through ostia.

Thus, the correct answer is option A.