Question
1. Complete the grid below.
What does this organism's heart
system have in common with
a human heart?
Whale
whales heart has four chamber just
like a human does
Octopus
Just like humans, octopuses have a
closed circulatory system
Giraffe
Both giraffes and humans have two
circulatory systems.
Frog
our hearts are four-chambered, while
a frog has a three-chambered heart.
What is unique about this
organism's heart?
Has 2 aortic arches
Has 2 aortic arches and
humans have 4
Giraffes have two aortic arches
Answer
Giraffes have two aortic arches, which is unique compared to humans who have four.