PLATYHELMINTHES About Platyhelminthes Platyhelminthes are an ancient phylum and there is little information into how it evolved. Their evolutionary history remains unknown because soft-bodied organisms do not fossilize well. Scientists believe that the first flatworm began to evolve 550 years ago. Platyhelminthes otherwise known as “flatworms” have a wide variety of species within the phylum and have positive and negative effects on those who interact with them. Some examples of Platyhelminthes
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Platyhelminthes Platyhelminthes is a Flatworm. The meaning of Platy is flat‚ and the meaning of helminthes is a worm. So it`s very straight forward what the meaning Platyhelminthes is. Flatworms are very simple animals with bilateral symmetry. Flatworms are only a few mm. thick‚ but can be up to 20 m. long! They have one or more pairs of eyes and sensitive organs called ocelli. The eyes don`t see objects‚ but instead they detect light or darkness to they`re environment. A typical environment for
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the roundworms. However‚ every kind belongs to different phylum‚ so they are not closely related to each other. Flatworms ( phylum Platyhelminthes) and roundworms ( phylum Nematoda)‚ but there are many similarities and differences between these two types of organisms. Similarity: • There are many similarities between the two groups of worms‚ Platyhelminthes and Nematoda. There are true animals and have all characteristic that Classified as Eumetazoa .Both flatworms and roundworms have bilateral symmetry
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Animalia-Protostomes Match the following characteristics with the phylum that they describe; 1. First phyla of animals in which the digestive system is complete. NEMATODA 2. Acoelomate. Platyhelminthes 3. Pseudocoelomate. NEMATODA 4. First phyla of animals with cephalization. Platyhelminthes 5. First phyla of animals that is triploblastic. Platyhelminthes Define the following: 6. Cephalization= Animals with a concentration of nerves and sense organs in the anterior (primitive head-brain)‚ and with a
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The protostome grouping consists of Nematoda‚ Onychophora‚ Arthropoda‚ Platyhelminthes‚ Brachiopoda‚ Mollusca‚ and Annelida. Nematoda‚ Onychophora‚ and Arthropoda are classified and the Ecdysozoa group. Platyhelminthes‚ Brachiopoda‚ Mollusca‚ and Annelida are classified as the Lophotrochozoans. Possessing the traits of a psuedocoelomate and thrashing‚ was Nematoda. Although classified low on the cladogram‚ Nematoda are highly diverse and complex metazoans (Paul De Ley). Onychophora
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(S3K2P6[B]) [Pick the date] | Practical Class Lecturer: Pn Suria Tutorial Class Lecturer: Miss Lock Shu Ping Table of contents Phylum Porifera…………………………………………………..3 Phylum Coelentrata…………………………………………….4 Phylum Platyhelminthes……………………………………..5 Phylum Nematoda………………………………………………6 Phylum Annelida………………………………………………….7 Phylum Mollusca…………………………………………………..8 Phylum Arthropoda…………………………………………….9 Class Crustacea……………………………………………..9 Class Chilopoda…………………………………………….10 Class Diplopoda……………………………………………
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and C above ___C__ 5. Which of the following combinations of phylum and desription is (are) incorrect? a. Nematoda-roundworms‚ pseudocoelomate. b. Echinodermata- bilateral and radial symmetry; coelom from archenteron. c. Porifera- gastrovascular cavity; coelom present. d. Cnidaria- radial symmetry; polyp and medusal body forms. e. Platyhelminthes- flatworms‚ gastrovascular cavity‚ acoelomate. ___A__ 6. The cockroach belongs in the __________while the grasshopper
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biol Unit 5 Individual Project Name: Bradlee Melton Date: 4/27/2013 Part 1. There are 9 animals in nine different Phyla. Be sure to look at every page. | |Animal |Phylum |Dichotomous Key (steps) |Classification | |1 |[pic][pic] |Cnidarian |1b‚ 2a. 3b |Class
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AP Biology Reading Guide Fred and Theresa Holtzclaw Chapter 33: Invertebrates Name _______________________ Period ___________ Chapter 33: Invertebrates Chapters 31‚ 32‚ and 33 should be considered as a single unit‚ and you should try to put all of them together in a single conceptual framework. Due to the scope of our course‚ you are likely to see more general questions on individual phyla. For each of the phyla that we highlight in the questions that follow‚ try to know the characters that are
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Disscusion In this experiment‚ we are required to observe‚ explain‚ identify and recognize the phylum under Kingdom Animalia. The phylum that we need to identify was Phylum Porifera‚ Phylum Cnidaria‚ Phylum platyhelminthes‚ Phylum Nematoda‚ Phylum Rotifera‚ Phylum Mollusca‚ Phylum Arthropoda‚ Phylum Echinodermata‚ Subphylum Cephalochordata and Subphylum Vertebrata (Fishes). Phylum Porifera The characteristic of members of Phylum porifera include asymmetrical or radial symmetry body plan. There
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