Question

1
3. Assertion (A): Ventricles have thicker muscular walls than atria.
Reason (R) : Ventricles have to pump blood into various organs.
(a) Both A and R are true, and R is correct explanation of the assertion.
(b) Both A and Rare true, but Ris not the correct explanation of the assertion.
(c) A is true, but R is false.
(d) A is false, but R is true.​

Answer 1

Answer:

A

Explanation:

while the atria has to pump the collected blood to the ventricle the ventricle has to pump the blood till the brain also the LV > RV

hope it helps

Answer 2

Answer:

A option is the correct

Explanation:

Since ventricles have to pump blood into various organs, they have thicker muscular walls than atria do. The lining of alimentary canal has muscles that contract rhythmically in order to push the food forward.