Flatworms Flat and thin bodies Bilateral symmetry Most are parasitic Phylum Platyhelminthes Flatworms include planarians, flukes, and tapeworms 20,000 species of flatworms
Miscellaneous Information- Flatworms Movement- use of moving bodies of water or damp soil, or larger animals transporting them Nutrition- parasitic; the flatworm will take in food through same opening it eliminates waste Circulatory system- Gastrovascular cavity with one opening Digestion and excretion occur through same opening
Reproduction- flatworm splits in two forming a new flatworm Tapeworms Information Can get tapeworm infection by ingestion of food or water contaminated with tapeworm eggs or larvae
Can cause intestinal infections Symptoms- poor appetite, diarrhea, weakness, gastrointestinal discomfort Phylum Nematoda Roundworms
Ex. Pinworms and hookworms 90,000 species of nematodes Bilateral Symmetry Live in wet soil or water Eat dead leaves and other materials Some eat insects that
destroy plant roots Some destroy plant roots Flatworm Head Head holds attachment hooks for host attachment 2 eyespots to help detect light
Also contains brain called 2 simple brains called ganglia- simple bundles of nerves Phylum Nematoda Some roundworms can live in
humans and make them sick Roundworms have a complete digestive tract with 2 openings Nervous System of Roundworms Two nerve cords that transmit impulses in the
roundworm Miscellaneous Information- Roundworms Reproduction- sexually, eggs deposited in soil after fertilization Bilateral symmetry No formal respiration, circulation, skeletal systems
Phylum Nematoda Phylum Annelida Annelids are segmented worms Bodies are divided into many sections or segments Live in moist soil, freshwater, or saltwater 15,000+ species of annelids Examples: earthworms and leeches
Phylum Annelida Earthworms Have bristlelike Setae on each segment- helps in movement Tunnel through soil to eat small pieces of food Tunnels will loosen the soil and allow air to enter which helps plants to grow
Leeches and Us Used in medicinal treatment Abscesses, painful joints, glaucoma, myasthenia, and to heal venous diseases and thrombosis Phylum Annelida Miscellaneous Information- Segmented
Worms Nervous system- ganglia nerve centers in each segment that are connected by nerve cords to brain Closed circulatory system- like humans Gas exchange through skin- need for worm to live near water Digestion- complete internal digestive tract that runs length of body Gizzard- muscular sac and hard particles help grind soil and food
before they pass into intestine Nephridia- collect/remove waste from each segment Pg. 731 is a good reference for earthworm body Miscellaneous Information- Segmented Worms Reproduction- Hermaphrodites Produce both eggs and sperm
Phylum Annelida Leeches Eat small invertebrates Can attach to skin of vertebrates and feed on its blood Anesthetics in chemicals of bite to prevent pain Leech secretes chemical so blood does not clot Bilateral Symmetry and Body Plans
All bilaterally symmetrical animals developed from 3 embryonic cell layers: Ectoderm Endoderm Mesoderm 3 types- Acoelomates, Pseudocoelomates, Coelomates
Acoelomates Develop from the 3 layers but have no body cavities Digestive tract extends throughout body May have been first group of animals to evolve Ex. Flatworms Acoelomates
Pseudocoelomates Develop from the 3 layers BUT also has a space that develops between the endoderm and mesoderm- called a pseudocoelom (difference between flatworm and roundworm) Pseudocoelomates
Coelomates Body cavities form from Coelom (fluid filled space that is completely surrounded by mesoderm where specialized organs and organ systems, serves to cushion and protect organs) Humans, insects, fishes Example: Earthworm
Greatest diversity among animals Coelomates Earthworm Compare and Contrast Flatworm and Earthworm digestive tracts One opening to flatworms digestive tract (pharynx)
Earthworms digestive tract has 2 openings (mouth and anus) 3 types of worms Segmented Worms Roundworms Flatworms
All sonnets are 14 lines long. Sonnets in English are written in iambic pentameter, which means that each line has 10 syllables, alternating in an unstressed/stressed pattern. Sonnets follow a predetermined rhyme scheme; the rhyme pattern determines if the sonnet...
Monocotyledons and Dicotyledons Lesson Bundle. Dendrochronology, Tree Ring Dating Lesson Bundle. Plant Hormones Lesson Bundle. Botany Unit Crossword Puzzle. Leaf Identification Lesson Bundle. Botany Unit Review Game. Plant Life Cycles, Flowers, Fruits Lesson Bundle. Plant Life Cycles, Flowers, Fruits Review...
Crude oil Treatment process ... sodium Decompose in reactor and deactivate catalyst Cannot be removed by regeneration Lead poisoning effect on catalyst activity Arsenic poisoning effect on catalyst activity Sodium poisoning effect on catalyst activity Ease of hydroprocessing reactions PROCESS...
Aiming for interim report to Magnetic Fusion Program Leaders by Spring 2014 Road Map Study Group Members Dale Meade Chair Steve Zinkle Materials Chuck Kessel Power Plant Studies, FNSPA Andrea Garofalo Toroidal Physics Neil Morley Blanket Technology Jerry Navratil University...
Bagan distribusi kerja b. Bagan organisasi Teknik pengembangan sistem: 1. Teknik manajemen proyek, spt CPM dan PERT utk penjadwalan proyek. 2. Teknik menemukan fakta, spt wawancara, observsi, daftar pertanyaan, dan pengumpulan sampel. 3. Teknik analisis biaya/manfaat 4. Teknik utk menjalankan...
At night, the stars appear to move across the sky. As Earth rotates, the part of the sky that you see changes. The shape of the constellation does not change, but their place in the sky does. This is different...
Suzy Belonga, Instructional Technologist at the time, conducted trainings with PECRT on how to integrate tech into the PE classroom. Approx. $8,750. Fitnessgram - Year 2. ... Leah Mason, Engadine Consolidated Schools. Greg Chromy, JKL Bahweting. Briana KangasOtten, Pickford Area...
Ready to download the document? Go ahead and hit continue!