intro 1. List 2 challenges of living in the pelagic environment. 2. Why are phytoplankton important? 3. Compare the general body plan of diatoms & dinoflagellates. What are their shells are composed of? 4. Compare the oceanic conditions that diatoms and dinoflagellates each thrive in. 5. Describe how diatoms reproduce and why this allows them to bloom so quickly. 6. Which plankton are responsible for red tides/harmful algal blooms? 7. Define: net plankton
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The evolutionary relationships among cyanobacteria‚ red algae‚ brown algae‚ green algae‚ and flowering plants‚ observed from the results their photosynthetic pigment patterns using thin layer chromatography technique Introduction Endosymbiosis is a process where unicellular organisms engulf other cells resulting a life form that one or both cells are dependent on each other (Campbell et al.‚ 2008). Strong evidence suggests that different types of photosynthetic cyanobacteria underwent endosymbiosis
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Phytoplankton From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search Diatoms are one of the most common types of phytoplankton. Phytoplankton are the autotrophic component of the plankton community. The name comes from the Greek words φυτόν (phyton)‚ meaning "plant"‚ and πλαγκτός (planktos)‚ meaning "wanderer" or "drifter".[1] Most phytoplankton are too small to be individually seen with the unaided eye. However‚ when present in high enough numbers‚ they may appear as a green discoloration
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floating organisms that cannot swim against the current. *Taxonomy: size‚ function‚ autotrophs-producers‚ heterotrophs-consumers/decomposers‚ mixotrophs‚ complex‚ symbiotic/parasitic *Small to big: femtoplankton (viruses)‚ pico (bacteria)‚ nano (diatoms‚ dinoflagellates)‚ micro(sameasnano+protozoa)‚ meso(mostly zooplankton)‚ macroplankton *Grazing food chain: Phyto->zooplk->fish *Sinking flux: dead fall to deeper ocean POM: Particulate organic material DOM: dissolved organic material *Microbial
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ECOLOGICAL AND ECONOMICAL IMPORTANCE OF ALGAE Introduction..........................................................................................................2 Physical and ecological features of algae.............................................................4 Size range and diversity of structure.............................................................4 Distribution and abundance...........................................................................5 Photosynthesis and light-absorbing
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1. BIOLOGICAL CLASSIFICATION Aristotle’s classification - Aristotle was the earliest to attempt a more scientific basis for classification of organisms. - He classified plants into trees‚ shrubs & herbs and animals into two groups‚ those which had red blood and those that did not. Two-kingdom classification - In Linnaeus’ time Two Kingdom classification (Kingdom Plantae & Kingdom Animalia) was developed. Drawbacks of 2-kingdom classification Prokaryotes (Bacteria‚ cyanobacteria) and eukaryotes
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ALGAE Algae are eukaryotic organisms that have no roots‚ stems‚ or leaves but do have chlorophyll and other pigments for carrying outphotosynthesis. Algae can be multicellular or unicellular. Unicellular algae occur most frequently in water‚ especially in plankton. Algae are eukaryotic organisms that have no roots‚ stems‚ or leaves but do have chlorophyll and other pigments for carrying out photosynthesis. Algae can be multicellular or unicellular. Unicellular algae occur most frequently in water
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Clint Casey Planarians I. Diet: Planarians are carnivorous and eat other smaller animals. They also eat detritus‚ diatoms‚ dead animals‚ and decaying organic matter. (1) II. Predators: Larger carnivores eat planarians. Some fish such as the Crossocheilus siamensis (Siamese Algae Eater) have been studied to remove planarians from fish tanks. (3) III. Range: Most planarians live in fresh-water bodies. They also live in all oceans‚ and in moist terrestrial habitats. (5) IV. Microhabitat:
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differences between males and females in one lineage are not always predictive of differences in another. Male/female dimorphism between organisms or reproductive organs of different sexes is not limited to animals; male gametes are produced by chytrids‚ diatoms and land plants‚ among others. In land plants‚ female and male designate not only the female and male gamete-producing organisms and structures but also the structures of the sporophytes that give rise to male and female
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[3][6] Algae constitute a paraphyletic and polyphyletic group‚[3] as they do not include all the descendants of the last universal ancestor nor do they all descend from a common algal ancestor‚ although their plastids seem to have a single origin.[1] Diatoms are also examples of algae. Algae exhibit a wide range of reproductive strategies‚ from simple‚ asexual cell division to complex forms of sexual reproduction.[7] Algae lack the various structures that characterize land plants‚ such as the leaf-like
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