Worms Flashcards
Define flatworms
Worms with flat and thin bodies
What type of symmetry do flatworms have?
Bilateral
What is the simplest animal to have bilateral symmetry ?
Flatworms
Define parasite
Organism that feed off another organism(host)
What are tapeworm characteristics?
Are parasites
Live in intestines
Use hosts digested food
Don’t have digestive system
What are the body parts of a planarian ?
Eyespots Mouth Simple brain Nerve cords Feeding tube
What are characteristics of planarians?
Not parasite
Scavenger
Feeds off decaying material
What type of digestive system do planarians have?
2 way digestive system one opening
Define worm
A organism with a long, slender body ,bilateral symmetry, tissue and organs
What do eye spots do?
Allow worms to see light
How do planarian reproduce?
Asexually and sexually
How do planaria reproduce asexually?
Regeneration
What is regeneration asexual reproduction ?
Growing from a piece of the organism
How do planaria reproduce sexually?
They are hermaphrodites
What’s a hermaphrodite?
a organism that produce both egg and sperm