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BIO 101 Organism Physiology Paper

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Organism Physiology Paper
Organism Physiology Paper
BIO 101
Organism Physiology
There are many different types of organisms that could have been
chosen for this assignment. Organisms are any living thing such as
fungus, animals, plants, or micro-organism. It is a body made up of
organs, organelles, or other parts that will work together to carry on the
various process of life. The organism I chose for this assignment is
jellyfish. The name “Jellyfish” is a term that refers to the enormous
variety of creatures that live in the sea. Some jellyfish live in fresh water.
Jellyfish is an animal that belongs to phylum cnidarians, that is included
in the class of scyphozoan. They are members of two groups that float
freely or swim. The two groups are cnidarians and ctenophores. The
type of jellyfish in the diagram is the scyphozoan medusa. They are the
jellyfish that is commonly found washed up on seashore (Buiding Bodus
of Jelly-Jellyfish, 2012).
Jellyfish has two major body forms. The first body form is the polyp
stage. This stage is characterized by the non-moving stalk that will catch
food floating by. The second major body form is called the medusa
stage. This form is characterized by the round body with hanging
tentacles that will catch food (Hernandez, 2012). This form is more
familiar to most people. The jellyfish feeds off of small fish and
zooplankton that has been caught in their tentacles. They also have an
incomplete digestive system, this means that both food intake and waste
expulsion according to (Hernandez, 2012). The tentacles and oral arms
are moved by its muscles. The jellyfish uses its oral arms and/or
tentacles to move food to the mouth. Once the food is in the jellyfish’s
stomach it is digested into broth within 6 hours. The liquid is transported
around the animal by the circulatory system. Part of the waste are

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carried out through the mouth of the jellyfish. The canals of the jellyfish
and stomach makes up the gastroendodermal system. The jellyfish do
not have an anus to release waste like humans and most animals
according to (Buiding Bodus of Jelly-Jellyfish, 2012).
In the jellyfish, it has cells that are grouped together into tissues which is
also grouped into organs that all work together as an organ system. The
cells, tissues, and organs along with tentacles make up the jellyfish. The
tentacles and other parts of the jellyfish are armed with the stinging cells
that are called nematocysts. The nematocysts are well grouped into the
stinging batteries. When each cell is triggered by a touch of the potential
prey or predator that discharges a tiny thread that small harpoons will
impail the victim and inject venom. A prey will be injected with dozens of
harpoons. Harpoons are the tiny threads in a jellyfish that has poisonous
venom. These harpoons are located in the tentacles according to
(Buiding Bodus of Jelly-Jellyfish, 2012). Jellyfish has different types of
nematocyst that are found in coelenterates. An individual must know
which type of species in order to know what type of nematocyst it has.
Different types of jellyfish species will determine how many tentacles it
will have and if it has an oral arm. These arms are surrounded by the
mouth of the jellyfish. According to (Hernandez, 2012) some jellyfish are
not dangerous to humans but they are highly toxic. Some jellyfish does
not have these arms. Jellyfish perform the functions of life through
regulating the jellyfish’s internal environment. These parts of the jellyfish
will allow the organs to still be evolving and become suited to its
environment of today.
In conclusion jellyfish are sea creatures who rely on their environment
for all of life living. Jellyfish are unique sea creatures that have two major
body forms to help them catch food. The jellyfish uses their tentacles to
protect themselves and to catch food. The many different types of
organism there are jellyfish was the most interesting. Jellyfish is an odd
creature that most individuals try to stay away from because of their toxic
stinging cells called nematocysts. These stinging cells are located in the
tentacles. Jellyfish has a complex life cycle that takes on a number of
different forms.

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