Briefly explain how the presence of Pisaster (sea star) is able to maintain a high diversity of invertebrate animals in our intertidal community?
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animals in our intertidal community?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff0a8738e-b1c7-4de6-8b62-88416b1c0252%2F87991988-77f3-456b-90a0-f10ca163502f%2F1grotf_processed.jpeg&w=3840&q=75)
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- Provide a detailed summary of spatial distribution of Epigeic earthworms. Also include distribution of this species/individuals at various scales, within population and WHY this spatial pattern may have developed or evolved?Outline the features that suggest the Cnidaria and Ctenophora share. Outline the features that distinguish these two phyla. Be sure to discuss (at a minimum) the nervous system, muscle tissue, and cells used for prey capture. Discuss which of these may be convergent adaptations for a pelagic lifestyle.In a tide pool, a student encounters an organism with: a hard outer covering that contains calcium carbonate, an open circulatory system, and gills. The organism could potentially be a crustacean or a bivalve. Which structure listed below would allow for the most certain identification? A)the presence of a mantle B)the presence of a coelom C)the presence of a heart D)none of these options could be used for identification E)the presence of a complete digestive tract
- Name three disadvantages of sexual reproduction (relative to the asexual alternative). Name one advantage. Diagram the life cycles of a typical scyphozoan (e.g. Aurelia), a trematode, and a monogonontan rotifer, then compare and contrast the features of these life cycles. Be sure to emphasize where and how sexual reproduction, asexual reproduction and dispersal take place. Relate where sex and asex occur in the life cycle to the first part of the question.Identify what are described:1. The type of pseudopod exhibited by amoebozoans.2. The leading area for pseudopod movement in amoeba.3. The terminal region in amoeba responsible for exocytosis. 4. Causative agent of reptilian amoebiasis.5. Mass of naked multinucleate cytoplasm that serves as feeding stage in slimemolds.6. Aggregation of individual cells in cellular slime mold occur during thissituation.7. The feeding form of Entamoeba histolytica.8. Primary function of slime molds in the environment.9. Mode of nutrition among slime molds.10. This is another term for the pseudoplasmodium.Can organisms in the class Cephalopoda successfully compete versus humans? Is there a possibility that the species may go extinct as a result of humans utilization of the organism as a resource?
- What is the life style of this organism (gooseneck barnacles)? (Select all that apply) Pelagic, nektonic Benthic, epifaunal Sessile Benthic, infaunal Vagrant Pelagic, planktonicIn which of the following taxa would you find tidal ventilaiton of the respiratory medium? A) Hagfish B) Chodrichthyes C) Lampreys D) Aves E) Both A and DDiscuss the phrase “Sponges work well with so little.” In what particular instance would this be applicable in the life of a sponge? Cite specific examples ( 3) and explain briefly. Discuss the potential use of sponges as monitors of chemical pollutant stress in marine and freshwater ecosystems. Use concepts learned in Ecology. Most sponge species are of leuconoid construction, is this type of sponge construction an advantage or disadvantage?
- What is the lifestyle of the organism (ammonite) in the photo? (Select all that apply)(Hint: Ammonites are cephalopods which have a structure called a siphuncle which is capable of regulating buoyancy of their shell by removing water from or flooding chambers in the shell. Ammonites also had tentacles like modern squid.) Pelagic, planktonic Vagrant Sessile Benthic, infaunal Pelagic, nektonic Benthic, epifaunalWhat animals are Omnivores in the Epipelagic ZoneWhat is the difference between commensal and parasitic associations? Give an example of a marine commensal association/relationship that has the potential to become parasitic.