'Flame cells' diaporamas de présentation

Chapter 25

Chapter 25. Worms & Mollusks. 25-1 Flatworms. Flatworms. Phylum Platyhelminthes Acoelomates Thin, solid bodies Bilateral symmetry Found in marine, freshwater, and moist habitats on land Examples: tapeworms, flukes, and planarians. Feeding and Digestion in Planarians.

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EXCRETORY SYSTEM

EXCRETORY SYSTEM. Excretory System. Metabolic wastes of the chemical reactions in the cell are removed from the body. This process is called EXCRETION . Function of Excretory System. Filtration and excretion of metabolic wastes The regulation of blood content. The regulation of blood pH.

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Platyhelminthes

Platyhelminthes. Flatworms. Simplest animals to have bilateral symmetry. Have 3 cell layers. Have a gut but no body cavity. Have only one opening to the gut. Respire by diffusion so they have to be flat so that all cells will have access to oxygen. Have definite organs.

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Kingdom Animalia

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Phylum Platyhelminthes and other Acoelomate Animals, Chapter 8, Zoology

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How are worms different?

How are worms different?. 3 KINDS OF WORMS. Some free living and some parasites in every group. ALL WORMS ARE:. INVERTEBRATES no backbone PROTOSTOMES blastopore becomes MOUTH. COELOMS: Flatworms = acoelomates Round worms = Pseudocoelomates Segmented worms = Eucoelomates. FLATWORMS.

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The WORMS

The WORMS. Kingdom Animalia Various Phyla Platyhelminthes (Flatworms) Nematodes (Roundworms) Annelid (Earthworms) . THE FLATWORMS. Platyhelminthes. FLATWORMS. Body Plan. Levels of Organization: Specialized Cells, Tissues, and Organs Body Symmetry: Bilateral Germ Layers: Three

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PHYLUM PLATYHELMINTHES

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Bell work

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Worms #2

Worms #2. REVIEW. JEOPARDY. S2C06 Jeopardy Review. Body systems. Picture ID. Worms. Earthworm Body parts . Parasites . 100. 100. 100. 100. 100. 200. 200. 200. 200. 200. 300. 300. 300. 300. 300. 400. 400. 400. 400. 400. 500. 500. 500. 500. 500.

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The Worms

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Phylum Platyhelminthes

Phylum Platyhelminthes. Flatworms. Flatworms: The Platyhelminthes. Acoelomates: no coelom Bilateral symmetry Cephalization: with simple nervous system in the form of ganglia knotted at head and extending the body as a nerve cord.

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WORMS

WORMS. Phylum Annelida (Segmented Worms). 15,000 Annelid species Bilaterally symmetrical coelomates Coelomes divided into partitions by septa Inhabit marine, fresh water, & moist environments Has complex digestive system Has closed circulatory system

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Invertebrates

Invertebrates. Anatomy and Physiology in Invertebrates. Support and Movement. Almost all animals have muscle-like tissue for movement Three types of skeletons: Hydrostatic skeleton Exoskeleton Endoskeleton. Hydrostatic Skeleton. Muscles supported by a water-filled body cavity

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Kingdom Animmalia

Kingdom Animmalia. By Kendall Reyes Diana Ramirez Itcelia Segoviano. Porifera. They feed through pores on their outer walls. Porifera are unidirectional driven by flagella. They have cellular level organization Different cells perform different functions.

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Kingdom Animmalia

Kingdom Animmalia. By Kendall Reyes Diana Ramirez Itcelia Segoviano. Porifera. They feed through pores on their outer walls. Porifera are unidirectional driven by flagella. They have cellular level organization Different cells perform different functions.

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EXCRETORY SYSTEMS

EXCRETORY SYSTEMS. Excretion is the process by which metabolic wastes and excess substances are removed from the organism. The process of excretion also removes excess heat from the body, thus helping to keep the temperature of the body constant.

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KINGDOM ANIMALIA

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Phylum Platyhelmithes

Ken Knezick. Phylum Platyhelmithes. The flatworms. Flatworms have an incomplete gut! Pharynx : Single opening in their digestive system Flatworms also have a excretory system

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