Assignment Chapter 6 - Essay Example

Chapter 6. Welcome to the Eukarya: Kingdoms Protista and Fungi Chapter Assignment – ification In Chapter 6, we discussed the kingdoms of Protista and Fungi. This exercise will help you remember the similarities and differences. Use Internet and other resources to supplement the information provided in this course.1. Complete the chart below comparing groups of Protista. The first examples are completed for you. GroupPrimary CharacteristicsExamplesHabitatPlant-LikeDiatomsAquatic, single cells surrounded by two silica shellsNaviculaFreshwater and MarineEuglenoidsSingle cellular, autotrophic, during night falls they become heterotrophic.

Some have flagella and light sensitive receptor called eye spot.EuglenaFresh water.DinoflagellatesUnicellular with flagella and are capable of glowing in dark. Outburst of population may turn the water red or brown.Pfiesteria piscicidaSalt waterChlorophytaGreen, unicellular plant like algae, a few are multicellular.Chlorella, Chlamydomonas, SpirogyraOn the surface of ocean and marine waters, below soil, rocks and tree barksRhodophytaPigmentation and chlorophyll abundance decides the appearance of the protist.

Cell wall contain agar that gives slimy appearance.EucheumaMost live in marine water while some live in fresh water.PhaeophytaColor varies from brown to golden depending upon the pigmentation. Multicellular.MacrocyctisMarine water, in cool temperature.Animal-LikeCiliatesSingle cell moved by many ciliaParameciumFreshwaterFlagellatesSingle cell moves by flagella, a whip like structureGiardia lambliaParasites, contaminate water bodies, river bankAmoebasSingle cell moves by pseudopodia (false foot)Entamoeba histolyticaMoist soil, fresh water and salt waterSporozoaIntracellular parasites lack locomotor organ.

Spore forming and pass from one to other host.PlasmodiumInside the organs of the host.Fungus-like Slime MoldFungus-like protista, under unfavorable condition it becomes multicellular.Stemonitis fuscaMoist soil, decaying plants and trees.2. Complete the following chart comparing the groups of Fungi.GroupPrimary CharacteristicsExamplesHabitatZygomycetesProduces single zygosporeRhizopusBread or other food.AscomycetesAscus or sac fungus produce asexual spores conidia with four or eight spores Yeast, Neurospora crassaOrganic matterBasidiomycetesSingle mycelium grow as basidia- smut, rust, fungi.

Mushroom, Puccinia graminisGrow on various plants and animalsLichens Symbiotic association of fungus with cyanobacteriaCladonia cirstatellaMoist places, tree bark3. Scientists are constantly reviewing the classification of living organisms. At one time, they divided all of life into plants (including fungi) and animals. After the advent of the microscope, they added a third group that included all the new life being discovered. Then it was realized that the microsopic organisms fell into two distinct groups (bacteria and protists), and that fungi could not be included in the plant category.

Finally, scientists divided the bacteria into two groups and created the Domain system. In this text you have learned the currently accepted classification of Protists. Recently, however, there have been some changes in the Protist classification. Using Internet resources and references in your text, see if you can find some information on the latest classification of Protists. Describe the newest scheme and the reasoning behind it. Provide at least three sources to support your answer.

Classification of Protists-A. Based on nutrition: Protists which are autotrophs are classified as plant-like, protists which are heterotrophs are classified as animal-like while protists which which procure food by external digestion are classified as fungus-like ("Protists").B. Based on the locomotion: Protists are also classified on the basis of organ for locomotion such as a. Amoeboids with fleeting pseudopodia: e.g. Amoebab. Ciliates with numerous small cilia: e.g. Parameciumc. Sporozoa spore forming organisms: e.g. Plasmodium.

("New World Encyclopedia"). Protists are polyphyletic in origin and therefore they are classified on the basis of their evolutionary relationships.The Modern Classification encompasses-A. Kingdom ArchaezoaB. Kingdom EuglenozoaC.Kingdom Alveolata: a. Dinoflagellates b. ApicomplexansD. Slime Molds ("Biology 110- Basic Concepts and Biodiversity").Work CitedAnswer 1"Protists Kingdom". Web. 6 Jun. 2012. .Answer 2"Fungi". Web. 6 Jun. 2012. .Answer 3"Protists". Web. 6 Jun. 2012. ."New World Encyclopedia". Web. 6 Jun 2012. ."Biology 110- Basic Concepts and Biodiversity".

Web 6 Jun. 2012. .