Question

Give 8 reasons in point forms on why four chamber heart are strongly selected for in birds than in other reptilian species

Answer 1

As the heart develops in the unborn child, it takes on several distinct appearances, each resembling other animal hearts and each a step higher on the evolutionary ladder. At first, the tube-like heart is much like a fish heart. When it divides into two chambers, it is similar to a frog heart; with three chambers, a snake or turtle heart. Finally, with four chambers, the fully formed heart looks like what it is: the heart of a human being, the most highly evolved mammal.

Our sophisticated ticker allows us to process energy more efficiently and, therefore, move further from our energy source. We can do lots of work in between looking for food, while a fish has to live in its energy source, eating all the time.

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