describe the circulatory system of sponge, hydra and planarian. what advantage of having none circulatory system
Living things must be capable of transporting nutrients, wastes and gases to and from cells. Single-celled organisms use their cell surface as a point of exchange with the outside environment. Multicellular organisms have developed transport and circulatory systems to deliver oxygen and food to cells and remove carbon dioxide and metabolic wastes.
Sponges are the simplest animals, yet even they have a transport system. Seawater is the medium of transport and is propelled in and out of the sponge by ciliary action. Simple animals, such as the hydra and planaria, lack specialized organs such as hearts and blood vessels, instead using their skin as an exchange point for materials. This, however, limits the size an animal can attain. To become larger, they need specialized organs and organ systems.
describe the circulatory system of sponge, hydra and planarian. what advantage of having none circulatory system
TABLE 19.1 Summary Table of Animal Characteristics Tissue Type of Digestive Symmetry Organization Body Cavity Openings Animal Circulatory System Habitat Respiratory Organs Sponge Hydra Planarian Clamworm earthworm Roundworm Crayfish Grasshopper Sea star Lancelet
pata, Hydra Sketch the Hydra Label tentacles, mouth Answer Questions 1. What type of symmetry do Hydra exhibit 2. What body form does the hydra have 3. Name the stinging cells on the surface of the tentacles. B. Data, Planaria (Dugesia) Sketch the Planaria Label the eyespots, pharynx Questions Answer 1. How do planarians move? Place a piece of white paper half way under the petri dish, leaving the other half over the black table. Wait for several minutes. 2....
Exercise 1. Comparative Anato Animal Type of Circulatory Outstanding System Advantages/ Disadvantages Features Hydra Earthworm Grasshopper Fish Frog Crocodile Turtle Bird Dog Human
Name Section Exercise 1. Comparative Anatomy Animal Hydra Type of Circulatory System Outstanding Features Advantages Disadvantages Earthworm Grasshopper Fish Frog Crocodile Turtle Bird Dog Human
The larval form of a sponge is motile using flagellated cells. what is an advantage for a sessile adult sponge to have a motile larval form? please help thank you!
What is the evolutionary advantage of closed circulatory system over system? A. Open system are subject to contamination form the environment. B. Blood pressure is higher in open systems. C. Blood in closed system can be shunted where it is needed. D. Blood loss is greater in open systems. E. A and D only. Leaves are broad and thin to minimize their absorption of oxygen. Xylem may transport water and materials in either direction depending on where the source and...
What major differences are there between Scypha and Hydra body
forms? List and describe them.
scussion questions: 7. What major differences are there between Scypha and Hydra body forms? List and describe them.
LAB TOPIC 8 Vertebrate Anatomy II: The Circulatory and Respirato Discussion 1. What is the advantage of the circuit of fetal blood flow through the ductus arteriosus? 2. What is the advantage of fetal blood flow through the foramen ovale?
List two external features that are common to all arthropods Describe the circulatory system of an arthropod What is the one unique anatomical feature of the echinoderms? How do the body plans of echinoderm larva and the adults differ? List the four features all chordates share at some point in their development.
Platyhelminthes Planaria Nematoda Ascaris Features Cnidaria Hydra Musculature (layers present and how arranged) None Ialiated lepithelum LAB REPORT (cincalar wracles Digestive tract and digestion Excretion Nervous system Sense organs Reproduction, sexual Reproduction, asexual