Question

The most highly advanced character in crocodiles is the

• A. Presence of four chambered heart
• B. Capacity to come on the land
• C. Capacity to lay hard-shelled eggs
• D. Presence of powerful jaw muscles

Answer 1

The correct option is A Presence of four chambered heart

Like mammals and aves, crocodiles also have a four-chambered heart. Similar to mammals, one side of their heart pumps oxygenated blood to the rest of the body and the other side collects deoxygenated blood from the body and transports it to the heart. They also have one extra part that neither mammals nor aves possess. This organ happens to be a valve that the animal can close voluntarily in order to stop the blood from flowing into the lungs.

So, the correct answer is 'Presence of four chambered heart'.