6/2/2010 1 Examples of Autotrophic Protists Euglena and Laminaria Euglena sp. (Euglenids) • Unicellular! • One or two flagella that emerge from a pock...
BOT 3015L (Outlaw/Sherdan/Aghoram); Page 1 of 6 Chapter 10 Overview of Autotrophic and Heterotrophic Protists Objectives Protista. Establish familiarity with the
BOT 3015L (Sherdan/Outlaw/Aghoram); Page 1 of 9 Chapter 9 Overview of Autotrophic and Heterotrophic Protists Objectives . Protista. Establish familiarity with the
The Protists - Eukaryotic Organisms Kingdom Protista. Single-celled, eukaryotic organisms are called protists. They are grouped together in. Kingdom Protista. Those protists that ... heterotrophic organisms that occupy marine, freshwater and terrestr
Protists - Euglena Euglena Euglena are unicellular organisms classified into the Kingdom Protista, and the ... Define autotrophic. 6
Protists include many different types of organisms, such as algae, kelp, and paramecium ... great examples of a protist that uses photosynthesis to eat
Oceanic Protists By Barry F. Sherr ... Figure 1 shows representative examples of marine protists, and of methods used ... tion rates of heterotrophic protists are
Performance Data HCD-120 Pressure Limitations The chart at the right shows conservative pressure limitations based on a maximum blade deflection of w/360
Microbiology Bacteria, Protists, and Fungi Ex 23 ... Examples are thermophiles, halophiles, etc ... Autotrophic b. Classified by
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Liebe Gitarristin, lieber Gitarrist, willkommen zur heutigen Lektion: Gitarre zupfen lernen für Anfänger. Zu dieser Lektion habe ich dir ein Video aufgenommen und
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Protist outline-- CHAPTER 20 PROTISTS ... not considered truly autotrophic because nearly all become heterotrophic in the absence ... EXAMPLES - DIATOMS PROTISTS
Know the meaning and examples of the vocabulary highlighted in bold. 2. Understand the composition of the Kingdom Protista. ... Heterotrophic Protists
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Bacteria, Protists & Fungi I. Prokaryotes: ... - examples are amoebas, paramecium, euglena, even some diseases like malaria, sleeping sickness and giardia
6/2/2010
Examples of Autotrophic Protists Euglena and Laminaria
Euglena sp. (Euglenids) • Unicellular! • One or two flagella that emerge from a pocket at one end of the cell
Figure 28.8!! Long flagellum
Eyespot Light shield so only specific light hits the detector
Nucleus Euglena (LM)
5 µm
Light detector
Contractile vacuole Osmoregulation
Plasma membrane Chloroplast Pellicle Protein bands that provide strength and flexibility
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Nutrition, Movement and Regulation • Mixotrophs – Lose chlorophyll in dark (become absorptive)
• Movement: Flagellar or euglenoid (shape change) – Positive phototaxis (due to light detector)
• Osmoregulation Os o egu at o – Euglena are hypertonic to their environment (have more solutes and particles) – Contractile vacuole
Brown Algae (Laminaria sp.) • • • •
Largest and most complex algae (“Seaweed”) Multicellular (not a plant! Has “plant‐like” parts) Marine environments Kelp: Giant seaweed! p
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Human Uses of Seaweeds • Foods, thickeners (gel like), lubricants
Terms needed to understand Laminaria life cycle • • • •
Haploid (n): containing one set of chromosomes Diploid (2n): containing two sets of chromosomes Gamete: a haploid reproductive cell (ie: egg and sperm) Zygote: the diploid product of the union of gametes (ie: fertilized egg) fertilized egg)
• Sporophyte: Multicellular diploid structure, produces haploid spores • Spore (zoospores): haploid cell with flagella, can make a multicellular haploid structure • Gametophyte: multicellular haploid structure, produces gametes
Alternation of Generations • Alternate between two multicellular forms: 1. Sporophyte (“seaweed”) – Diploid (2n) individual – Produces haploid (n) P d h l id ( ) spores (zoospores!) ( !)
2. Gametophyte – Haploid (n) individual – Produces gametes that fuse together (fertilization) to form a diploid zygote
Summary • Euglena – Major components, nutrition, movement (+phototaxis), osmoregulation
• Laminaria a a a ((Brown Algae) o gae) – Multicellular, marine, kelp, parts: blade, stipe, holdfast
• Human uses of seaweed • Alteration of generations – Haploid / diploid parts of figure, structures (note: do not have to know “sporangia” that is labeled in the book)
