This essay Aquarium has a total of 455 words and 3 pages.
Organism 1,2,3,6,7,8,9 and 10 are from the phylum Chordata. All Chordates shared four major characteristics; a notochord, which provides a skeletal support, a dorsal hollow nerve cord, which develop into the central nerve system, pharyngeal slits, which are openings in the pharynx that develop into gills, and a post-anal tail.
Organism 2,7 and 8 are the phylum Mollusca. The animals in this category share many characteristics which are bilateral symmetry,two cell layers, tissues and organs, lack a cavity, posses a through gut with a mouth and anus monomeric and highly variable bodies, may posses shell and calcareous spicules, has a nervous system with a circum-oesophageal ring, ganglia and paired nerve chords, open circulatory systems with a heart and an aorta, has gaseous exchange organs called ctenidial gills, reproduce sexually, feed on a wide variety of materials and live in most environments.
Organism 4 is an Arthropoda. Arthropods have a body covered in chitinous cuticle that hardens into an exoskeleton, composed of somites (Metamerism), jointed appendages, ventral nerve cord with ganglia at each segment, open circulatory system and a bilateral symmetric body. Most Arthropods reproduce sexually; however some insects are parthenogenetic.
Organism 4 was Porifera. Poriferans are commonly sponges which are sedentary by nature, most of them are marine sponges, cylindrical, have radial symmetry, have a body wall called a diploblastic, their middle layer has various wandering amoebocytes, have many ostia on their body, feed on minute organisms and small organic particles which enter the body through the oscula, have exoskeletons, secrete mainly ammonia, and asexual reproduction takes place by budding or sexual reproduction take place through internal fertilization.
Organism 5 and 9 are Cnidaria. Cnidarian organisms are radially symmetrical, have bodies with internal cavity and a mouth, reproduction is sexual or asexual, has a simple net-like nervous system, has a distinct larval stage which planktonic, live in aquatic environments, mostly carnivores otherwise filter feeders, and have minimal skeleton of chiton or calcium carbonate.
Organism 6 is echinodermata. These organisms free living, exclusively marine forms, larvae are bilaterally symmetrical while the adults are radially symmetrical, have bodies represented by a central disc covered by ossicles with spines called pedicularia, disc may bear extensions called arms, have a complete digestive system, have a water vascular system, posses tube feet for locomotion and respiration as well as feeding, has a central nervous sytem ring with five radiating nerves, sexual reproduction, development is indirect, and posses an ability to regenerate.
For organism 3, the subphylum is Crustacea. Crustacea are primarily aquatic arthropods, but also include terrestrial forms, which have a cephalothorax covered by a carapace. They also have mandible mouthparts, gills for respiration, antennae, and biramous appendages.
EthologyEthology The biological study of animal behavior is called Ethology. All behavior is a reaction to a stimulus. John B. Watson influenced animal behavior in the twentieth century. He published a book in 1924 called Behaviorism. Jakob von Uexkull and O. Heinroth started a school that taught about animal behavior. There are two categories of animal behavior: genetically determined or environmentally determined. Animal behavior is the different ways that animals do different things, such as hunt
To What Extent Does Acid Precipitation Affect Annelids?To What Extent Does Acid Precipitation Affect Annelids? In order to truly understand acid rain and it's eventual effect on earthworms, it would be best to look at the causes of acid rain. How and why does altered acidity in precipitation have a devastating effect? Acid rain is charecterized as Precipitation that has a pH lower than about 5.0 (Allaby, Michael (1994) Ecology, Oxford Press,). Acid rain is created by many things, of which pollution from cars contributes the most. Ever since the In
The Spectacled BearThe Spectacled Bear The Spectacled Bear, or Tremarctos Ornatus, is an endangered species. This rare bear can only be found in a few elusive spots in the world. Many endangered species all over the world don?t deserve the respect and care that they need. That is why many endangered species often become extinct or remain on the endangered species list for the remainder of their survival on Earth. Today, as more species become endangered, more people become involved in their care. Many things are b
AFRO-005, Section 04 [3 Credit Hours], CRN 10015[1 AFRO-005, Section 04 [3 Credit Hours], CRN 10015 Introduction to Afro-American Studies I, Spring, 2010 Semester Tuesdays/Thursdays, Ernest Everett Just Hall (Biology) Auditorium, 9:40- 11:00 a.m.. Greg E. Carr, Ph.D., J.D., Associate Professor; Office: Founder's Library, Room 318 [202.806.7581, [email protected]] Office Hours: Tuesdays, 1-3 p.m.; Thursdays, 5:30-7:30 p.m.; By Appointment This course introduces and teaches students to apply major concepts and methods of the stand-alone a