Invertebrates Flashcards
(24 cards)
Vertebrates
Have a backbone, less than 5%of all animal species.
Invertebrates
No backbone, more than 95% of all animal species.
Consumer
Organism that eats other organic or organic matter.
Ganglion
A mass of nerve cells.
Gut
a digestive tract
Coelom
a body cavity that contains internal organs
Bilateral Symmetry
the two sides of a body mirror each other: equal left and right sides
Radial Symmetry
body is organised around the center, like spokes of a wheel.
Asymmetry
its not equal and doesn’t have a center.
Sponges
they are asymmetry, it has water that flows into a body cavity in the body bringing in food and oxygen.
Cnidarians
they have radial symmetry, they sting and poison their prey. ellyfish
Flatworms
a parasitic worms.
Roundworms
a parasitic worm
Mollusks
all have complex ganglia that control breathing, movement, and digestion.
Open circulatory system
open circulatory systems pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells.
Closed circulatory system
closed circulatory systems have the blood closed at all times within vessels of different size and wall thickness.
Annelid worms
A large phylum that comprises the segmented worms. earthworms, lugworms, ragworms, and leeches
Segment
a part
Exoskeleton
a skeleton on the outside of the skin/armor
Compound eye
an eye consisting of an array of numerous small visual units (flies eye)
Antenna
a long thin sensory appendages on the heads of insects
Metamorphosis
the process of transformation from an immature form to an adult form in two or more distinct stages
Endoskeleton
an internal skeleton, such as the bony or cartilaginous skeleton of vertebrates
Water vascular system
a network of water vessels in the body
