This study source was downloaded by 100000824559107 from CourseHero com on 07 03 2022 06 54 10 GMT 05 00 https www coursehero com file 74207756 CaluttongEvangelineV AssignmentNo3docx Name Caluttong Evangeline V Course Yr Sec BSENTREP 1 13 Date Oct 01 2019I Directions 1 1Write A if the first statement is true B if the second statement is true C if both A and B are true D if both A and B are false 1 2 Justify your answer If either the first or the second statement or both of these statements are false underline the word that made the statement s false then write the correct word to make it true 2pts C 1 A Coral reefs grow only in waters with fairly stable salinity B Periphytons are free floating microscopic chlorophyll containing organisms found in the ocean A 2 A The shallowest waters along the lake shore where rooted aquatic plants may grow is called the limnetic zone B The wetland at the edge of an estuary or ocean where water meets the land is called the pelagic zone Intertidal Zone C 3 A Diatoms green algae and dinoflagellates belongs to zooplanktons B The pelagic zone supports communities dominated by highly motile animals such as fishes squids and marine mammals C 4 A Intertidal zones vary from the mudflats and salt marshes of estuaries to wave splashed rocky or sandy beaches B The photic zone is a relatively small portion of ocean water and bottom into which light penetrates and in which photosynthesis occurs B 5 A Well mixed lakes of low biological production which are called euthrophic are nearly always oxygenated Eutrophic B Purse seining is done when the net is dragged over the seabed by two long warps extending from the towing vessels A 6 A Depending on the depth and light penetration the benthic community consists of attached algae fungi bacteria sponges burrowing worms clams and crabs B During warm season below the thermocline are the cold dark waters of the epilimnion Hypolimion This study source was downloaded by 100000824559107 from CourseHero com on 07 03 2022 06 54 10 GMT 05 00 https www coursehero com file 74207756 CaluttongEvangelineV AssignmentNo3docx B 7 A Nitrogen and phosphorus are the nutrients that usually limit the amount of neustons growth in a lake or pond Neutrons B At the great depths of the ocean is the pelagic zone wherein organisms rely on a continous rain of organic matter from the euphotic zone B 8 A Lake Superior is the seventh largest and the deepest lake in the world Lake Baikal B In lentic systems most of the photosyntheis is done by plants attached to the substrate A 9 A Lentic ecosystem exhibits vertical gradients in light temperature and dissolved gases B Planktons serves as primary secondary and tertiary consumers in the aquatic ecosystem Tertiary B 10 A Photosynthetic bacteria live near the hydrothermal vents due to large amounts of hydrogen sulfide Chemosynthetic B The prop roots of red mangroves provide a complex habitat for a high diversity of marine fish and invertebrates II Answer the following questions 5pts each item 1 Explain the transformation of corral reefs from fringing to barrier and finally to atoll reef Coral reefs begin to form when free swimming coral larvae attach to submerged rocks or otherhard surfaces along the edges of islands or continents Fringing reefs which are the most common projectseaward directly from the shore forming borders along the shoreline and surrounding islands Barrierreefs also border shorelines but at a greater distance They are separated from their adjacent land massby a lagoon of open often deep water If a fringing reef forms around a volcanic island that subsidescompletely below sea level while the coral continues to grow upward an atoll forms Atolls are usuallycircular or oval with a central lagoon Parts of the reef platform may emerge as one or more islands andgaps in the reef provide access to the central lagoon 2 Differentiate authocthonous and allochthonous energy sources Allochthonous is buried or found in a place remote from the site of formation whileautochthonous is buried in place especially of a fossil preserved in its life position without disturbance ordisarticulation As adjectives the difference between allochthonous and autochthonous is thatallochthonous is originating in a place other than where it is found while autochthonous is native to theplace where found indigenous 3 Describe the five groups of organisms found in any aquatic ecosystem Lotic Ecosystems They mainly refer to the rapidly flowing waters that move in a unidirectional way including the rivers and streams These environments harbor numerous species of insects such asbeetles mayflies stoneflies and several species of fishes including trout eel minnow etc Apart from This study source was downloaded by 100000824559107 from CourseHero com on 07 03 2022 06 54 10 GMT 05 00 https www coursehero com file 74207756 CaluttongEvangelineV AssignmentNo3docx these aquatic species these ecosystems also include various mammals such as beavers river dolphins andotters Lentic Ecosystems They include all standing water habitats Lakes and ponds are the main examples of Lentic Ecosystem The word lentic mainly refers to stationary or relatively still water Theseecosystems are home to algae crabs shrimps amphibians such as frogs and salamanders for both rootedand floating leaved plants and reptiles including alligators and other water snakes are also found here Wetlands Wetlands are marshy areas and are sometimes covered in water which has a wide diversity of plants and animals Swamps marshes bogs black spruce and water lilies are some examples in the plantspecies found in the wetlands The animal life of this ecosystem consists of dragonflies and damselflies birds such as Green Heron and fishes such as Northern Pike Ocean Ecosystems Our planet earth is gifted with the five major oceans namely Pacific Indian Arctic and the Atlantic Ocean Among all these fiveoceans the Pacific and the Atlantic are the largest and deepest ocean These oceans serve as a home tomore than five lakh aquatic species Few creatures of these ecosystems include shellfish shark tubeworms crab small and large ocean fishes turtles crustaceans blue whale reptiles marine mammals seabirds plankton corals and other ocean plants Coastal Systems They are the open systems of land and water which are joined together to form the coastal ecosystems The coastal ecosystems have adifferent structure and diversity A wide variety of species of aquatic plants and algae are found at