Describe a flatworm
WebFlatworm classification related to their digestive system. Flatworms have three undeveloped tissue layers that offer ascent to surfaces that spread over the tissues (from ectoderm), inside tissues (from mesoderm), and line the stomach framework (from endoderm). The epidermal matter is a self-contained coating cell or a sheet of joint cells ... WebMar 17, 2015 · Causal Agent: Dracunculiasis (guinea worm disease) is caused by the nematode (roundworm) Dracunculus medinensis. Life Cycle: Humans become infected by drinking unfiltered water containing …
Describe a flatworm
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WebFree-living flatworms are mostly predators, and live in water or in shaded, humid terrestrial environments, such as leaf litter. Cestodes (tapeworms) and trematodes (flukes) have complex life-cycles, with … WebAug 26, 2010 · The flatworms are acoelomate, so their bodies contain no cavities or spaces between the outer surface and the inner digestive tract. Physiological Processes of …
WebTheir cells, once specialized as muscle, bone, or cartilage, lose the characteristics by which they are normally identified (dedifferentiation); they then begin to migrate toward, and accumulate beneath, the wound epidermis, forming a rounded bud (blastema) that bulges out from the stump. WebFlame cell. A flame cell is a specialized excretory cell found in the simplest freshwater invertebrates, including flatworms, rotifers and nemerteans; these are the simplest animals to have a dedicated excretory system. Flame cells function like a kidney, removing waste materials. Bundles of flame cells are called protonephridia.
WebLike all flatworms, planaria belong to the Kingdom Animalia, and the Phylum Platyhelminthes. This phylum also contains parasitic flatworms, like the tapeworm and the liver fluke. Free-living flatworms like the planaria are grouped into the Class Turbellaria. The most common species studied in the lab is the brown planaria, Dugesia. The animal ... WebNov 6, 2024 · Biologists are keen to understand how a type of flatworm known as a planarian uses powerful stem cells to regenerate an entire body from a headless sliver of itself.
WebFigure 22.10. In the excretory system of the (a) planaria, cilia of flame cells propel waste through a tubule formed by a tube cell. Tubules are connected into branched structures that lead to pores located all along the sides of the body. The filtrate is secreted through these pores. In (b) annelids such as earthworms, nephridia filter fluid ...
WebAug 26, 2010 · The flatworms are acoelomate, so their bodies contain no cavities or spaces between the outer surface and the inner digestive tract. Physiological Processes of Flatworms Free-living species of flatworms … photo chocolat lindtWebFlatworms of the phylum Platyhelminthes have both a central nervous system (CNS), made up of a small “brain” and two nerve cords, and a peripheral nervous system (PNS) containing a system of nerves that … how does chris afton look in real lifephoto chocolate boxWebJan 24, 2024 · Flatworms are hermaphrodites, which means they have both male and female organs in one body. They have a primitive ladder-like nervous system. They are capable of both asexual and sexual... how does chris angel tricks workWebGeneral Characteristics of Flatworms (Platyhelminthes) Flatworms are bilaterally symmetrical organisms with multicellular bodies that display organ grade organization. Triploblastic organisms with three … photo christelle mackeWebSep 23, 2024 · The flatworms are acoelomate, so their bodies contain no cavities or spaces between the outer surface and the inner digestive tract. Physiological Processes of … how does chris impress jay twistleWebJun 1, 2010 · It’s March 1960, and James V. McConnell, an assistant professor of psychology at the University of Michigan, is convinced that planarians — common flatworms — hold the key to unraveling the mystery of memory. He has decided to condition them to scrunch when a bright light is flashed. how does chrisley make money