00:01
This question deals with animals and their body plans.
00:15
There are a lot of variations within the body contents of animals, but there are four main features.
00:23
That is the symmetry, the structure of the body cavity, segmentation, external appendages.
01:01
So what are used for sensing, chewing, locomotion.
01:06
This can affect how animals move and interact with their environment.
01:22
So those are our key features.
01:28
So we think about the symmetry of the body.
01:32
We're talking about the general structure of the body.
01:37
So in our body plans, we talk about the general structure.
01:41
That can include the symmetry, the segmentation, and then it includes all of the arrangements of the organ systems and the integrated functioning of the parts.
02:25
So the body plan is not necessarily just how it looks...