Similarities Between Horseshoe Crab And Trilobite

Mutualism is when two organisms have a relationship in which both of them benefit.An example of mutualism is algae and the spider crab.Since spider crabs spend most of their time in shallow water they can be seen by predators.Algae will make the spider crabs back their home.Now with the algae on their back, the spider crab is able to disguise itself from predators.If the spider crab did not have the algae it would be eaten by predators,if the algae didn't have the spider crab it would not have a home.

Yeti’s are mythical monsters, who live in southeastern Asia, and are related to bigfoot and yowie. However, there is an even bigger monster who lurks in the shadows of the arctic ocean. The recently discovered yeti crab. This hairy, blind crab is part of the three known species of the yeti crab(Elizabeth Palermo). The crabs live in the South Ocean in Antarctica, “About 8,500 feet down lives Kiwa tyleri the newest member of the yeti crab family” (Jessica Halel). The scientific name for it is Kiwa tyleri. According to Elizabeth Palermo,author of Yeti' Crab's Strange Body Suits Its Hellish Habitat, “for the first time, K. tyleri is the only species of yeti crab known to reside in the Southern Ocean, off Antarctica”. The crabs gather only a few

The Callinectes sapidus also known commonly as the Maryland Blue Crab, is a crustacean found in the Chesapeake Bay. The blue crab is found in aquatic environments, most often in estuaries. It characterized by it’s blue claws. The blue crabs undergo a life cycle of: zoeae, megalop, juvenile, and adulthood. The blue crab’s hard shells serve as a protective barrier for external dangers. The Callinectes sapidus comes from the order of Decapods, whereby it’s carapace has now evolved to be better suited for swimming. Of interest is the blue crab’s mating

In my comparative anatomy class I was able to distinguish the difference and the similarities between a earthworm, crayfish, and a chordate. The earthworm and the crayfish are both divided into parts. The earthworm is divided internally and externally into defined segments. These segments may also be divided as well. The crayfish is divided into two main parts.

Horseshoe crabs are an important part of the wetland ecosystem, however they are going extinct. Due to harvesting, pollution, and other animals consuming their offspring their numbers are dwindling. They play an important part in the ecosystem and need to be protected so they do not become extinct. The Delaware bay has decided to protect them for their future uses in medicine and to keep them as an important role in the ecosystem.

Evidence to support this theory is that there is that there have been fossils found on both sides of the Atlantic Ocean of land animals which gives us the idea that they must have been together originally. There is also climate evidence for

The worm, crayfish, and the frog have many of the same distinct features as well as some that are not. Throughout the dissection days, i’ve observed many things that relate to the human body system like the digestive system, respiratory, reproduction, etc. But, there are also many things that don’t match with one another. There are many things I can talk about the similarities and differences between all these animals to the human system, but i'll keep this short so it won’t be a whole 7 page essay. I will be talking about mostly about the similar and differences to each one that is compared to the human body system or mostly compared to one another.

Doyle reveals that all living organisms are related because they all have hearts. He begins by listing everything that has a heart, “Mammals and birds have hearts with four chambers. Reptiles and turtles have hearts with three chambers.

Birds are closely related to crocodiles because they share the same ancestry with the dinosaurs. To compare the crocodile and lizard, one would think the lizard is closely related to crocodiles, as we read in our text, "similar structures don't always reveal common ancestry." Crocodiles and birds evolved having the same common ancestry as the dinosaur. Lizards, on the other hand, do not share a close common ancestor with crocodiles or dinosaurs, their common ancestry is more distant.

All primates have a common ancestor, from millions of years ago. Go further back, and you will find a common ancestor for all mammals. Then a common ancestor for all vertebrates, then animals, then all life on earth. How closely two organisms are related can be deduced by looking for homologous structures, structures that look similar and have a similar function. This proves that the organisms descended from a common ancestor. Station 1 contained multiple vertebrate skeletons. They all had homologous structures, including a vertebral column and a rib cage. This shows that all vertebrates are related and come from a common ancestor with a

Humans and fish are not closely related on the outside appearance. Most people would not see how we can share the same features with fish, but scientists do know that these two species share homologous features. Homologous is being in similar structures, and having similar genes indicate species are from a common ancestor, but does not have indicated that these features will work exactly the same. Humans and fish are related in the lineage of chordate because human shared homologous features to fish. Homologous features shared by human and fish enlighten the evolutionary pathway from the earliest vertebrate by sharing similar structures of the hands and fins, the development of teeth that diversified into features that showed up from the

Embryological Evidence – similarities in early embryos can indicate they came from a common ancestor.

When society thinks about crayfish and earthworms they become extremely curious about how their bodies operate because of how they are made up. I will give a brief synopsis of both animals before going into major detail about them. According to the online website named dictionary.com, it says that an earthworm is a burrowing annelid worm that lives in the soil. Earthworms play an important role in aerating and draining the soil and in burying organic matter (Dictionary). Crayfish are nocturnal freshwater crustacean that resembles a small lobster and inhabits in streams and rivers (Dictionary). Crayfish and earthworms are some very interesting animals that possess some exclusive qualities both similar and different.

During this lab period, the safety procedures that should be followed are wearing your lab coat, safety glasses, gloves and use proper tools for dissection.

Human and fish are not closely related on the outside. Most people would not see how we can share same features with fishes, but scientists do know that these two species share homologous features. These features imply that human and fish are related in the lineage of chordate because human shared homologous features with fish. Homologous features shared by human and fish lighten up the evolutionary pathway from the earliest vertebrate by sharing similar structures of the hands and fins. The development of teeth that diversified into features that showed up from the skin, and down to the instruction that made us who we are. The similar bone structures and genetic made up are just modification that we have and they are modification of what