Answered: The following groups of protists will…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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The following groups of protists will be covered in lecture: Amoebazoa, Excavate-euglena,

Alveolata: ciliates, dinoflagellates, apicomplexan;

Stramenopiles: diatoms and brown algae, and

Plantae: chlorophytes.

How do these organisms compare in their

-general type of nutrition (autotroph, heterotroph),

-ecological roles (parasites, decomposers, importance in

food chains)

-general structures (cell walls, structures that help them

move and feed, single vs multicellular)

-reproduction (asexual, sexual)

-presence or absence of alternation of generations, -

degree of complexity of life cycles

-habitats that they are found in

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

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