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Roundworms

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by

Samira Noel

on 16 June 2014

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Transcript of Roundworms

Respiration
Roundworms do not have a respiratory system. Oxygen goes into the roundworms and then CO2 exits the cell by diffusion through their body
Roundworms
Movement
Aquatic roundworms move like snakes through the water, while soil/land dwelling roundworms push through by thrashing around
Feeding Techniques
Roundworms feed by using their grasping mouth parts and spines to catch and eat other small animals
Reproduction
Roundworms reproduce sexually with others roundworms
Symmetry
Roundworms have bilateral symmetry
Body Temperature Control
Roundworms are warm-blooded creatures that's body temperature stay the same
Nervous System
Roundworms have two nerve cords that transmit impulses through the body. Its a simple nervous system with a main cord running along the ventral side
Circulation
A roundworm has no heart or formal blood vessels.
Excretion
Roundworms excrete metabolic waste through their body walls
Unique Structures
Roundworms are unsegmented worms and have both a mouth and an anus
Habitats
Roundworms live in a variety of places including soil, salt flats, aquatic sediments, water from the polar regions to the tropics
Symbiosis Relationship
Roundworms can be part of a parasitic relationship and a commensalism relationship
Roundworms
By: Samira Noel
Examples
Hookworms
Ascarids
Guinea Worms
Questions
What type of Symmetry is roundworms?
Do roundworms have circulation?
How do roundworms reproduce?
How do roundworms excrete waste?
Are Roundworms warm-blooded or cold-blooded?
Answers
Bilateral
No
Sexually
Through body walls
Warm-blooded
Cite Page
Prentice hall; Biology Textbook By: Miller-Levine 2006
Full transcript