The specimen that we have dissected so far that seems most like humans is the crayfish. A crayfish has antenna and antennules that is like humans' hair. A crayfish has walking legs like humans' but the crayfish has more legs than human. The crayfish swimmerets, sternum, uropod, and telson are like humans' feet and arms because humans uses their feet and arms to swim in water. The most obvious thing that a crayfish has that is like the human are the mouth and eyes. The crayfish abdomen are like humans' body or legs.
One biome is the freshwater biome. Freshwater is defined as having a low salt concentration — usually less than 1%. Plants and animals in freshwater regions are adjusted to the low salt content and would not be able to survive in areas of high salt concentration (i.e., ocean). These ponds and lakes range in size from just a few square meters to thousands of square kilometers.
The most interesting thing about this week's dissection was learning the internal and external anatomy of each different organisms. Learning the internal anatomy of different organisms had taught me many new things such as the life of each organisms and what they eat. It has also taught how small and big each organisms brain's are and many other things inside the organisms. The external anatomy of each organisms had also taught me many new things too. For example, you can find the age of a clam by counting the dark lines on the external of the clam. Another thing is I learned is how detailed each organism actually is. For example, the fish scales were very detailed. It had a lot more lines then you can see without a microscope.
There were several things that surpised me from the worm's dissection. One thing was that I did not expect the worm was going to be that long. I though that the worm was going to be like an inch long. Another thing I was surprised was the worm's head which including the brain, was pretty interesting to see. Another thing is I did not expect the dirt in the worm to still be inside it. I thought it was diggested already. All the parts in the worms head was very interesting to see. Overall the worm dissection was pretty interesting to do because I got to discover the parts of a worm.
