Term
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Definition
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Term
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Definition
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Term
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Definition
| worms are more complex; they have mesoderm as well as endoderm and ectoderm |
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Term
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Definition
| Their mesoderm is a solid mass of tissue with no internal cavity surrounded by mesoderm. |
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Term
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Definition
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Term
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Definition
| fluid-filled space between the body wall and digestive tract |
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Term
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Definition
| major organs suspended in a coelmic cavity |
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Term
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Definition
| to have three embryonic layers |
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Term
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Definition
| worms have these, made of interdependent tissue |
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Term
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Definition
| both male and female sex organs |
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Term
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Definition
| sensory organs on the head |
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Term
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Definition
| in between the mouth and the gastrovascular cavity on the Dugesia. |
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Term
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Definition
| parasites inside their hosts |
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Term
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Definition
| parasites on the surface of their hosts |
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Term
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Definition
| acellular but metabolically active, trematiode have this instead of an epidermis |
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Term
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Definition
| and organism harboring immature stages of a parasite |
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Term
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Definition
| contains sexually mature, egg-laying stages of the life cycle. |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| follows the neck, series of segments |
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Term
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Definition
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Term
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Definition
| covers nematodes, flexible and chemically complex |
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Term
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Definition
| fluid-filled space between the body wall and the digestive tract |
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Term
| complete digestive tracts |
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Definition
| having a mouth and an anus |
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Term
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Definition
| Phylum Mollusca; Phylum Annelida |
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Term
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Definition
| phyla molusca annelida and arthropoda. Have well developed nervous, circulatory, excretory, reproductive, and digestive systems |
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Term
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Definition
| echinodermata, hemichordata, chordata |
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Term
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Definition
| Specialized layer of epidermal cells called a mantle that secrets a shell |
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Term
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Definition
| have a few large vessels and a heart but no smaller vessels and capillaries |
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Term
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Definition
| organ systems ( digestion, excretion, and reproduction) |
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Term
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Definition
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Term
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Definition
| horny-toothed organ in the mouth, scrapes food from rocks |
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Term
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Definition
| where the mantles of the left and right valves join posteriorly. |
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Term
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Definition
| where the mantles of the left and right valves join to form a dorsal excurrent siphon |
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Term
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Definition
| the space between the mantle and the visceral mass |
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Term
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Definition
| body of an annelid is divided into repetitive segments arranged on a longitudinal axis and divided by septa |
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Term
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Definition
| small, bristlelike appendages oftem occurring in pairs on lateral and ventral surfaces. |
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Term
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Definition
| on each segment of Nereis, they are fleshy appendages |
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Term
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Definition
| fleshy lobe that precedes the mouth |
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Term
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Definition
| posterior to the mouth, (around mouth) |
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Term
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Definition
| series of swollen segments at the anterior the the third body |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| where sperm enter the other worm |
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Term
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Definition
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Term
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Definition
| aftern the eggs are fertilized in the mucous band , the worm releases it as a cocoon. |
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Term
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Definition
| for suction and ingestion of food |
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Term
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Definition
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Term
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Definition
| maceration or crushing of food |
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Term
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Definition
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Term
| brain; ventral nerve cord |
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Definition
| rudimentary; just anterior and dorsal to the pharyns and is continuous with the vernral nerve cord |
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Term
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Definition
| occure on each segments; paired |
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Term
| nephrostomes; nephridiopores |
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Definition
| funnel-shaped; on the ends of the nephridia gather waste products that are relase through external pores called nephridiopores |
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Term
| Dorsal and Ventral Blood Vessels |
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Definition
| main vessels of the closed circulatory system |
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Term
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Definition
| connect dorsal nad ventral blood vessels, five of them. |
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Term
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Definition
| internal folds of tissue arise from dorsal wall |
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Term
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Definition
| packet of sperm (leech sexual reproduction) inserted into the female gonopore |
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