Chapter 2 Flashcards
Invertebrates
Animals without a backbone
Bilateral Symmetry
When two halves of the animals body is a mirror image to each other
Radial Symmetry
A body plan in whips has the parts of the body are arrange in a circle around a central point
Asymmetrical
Without Symmetry
Ganglia
Groups of nerve cells
Gut
The pouch where food is digested in animals
Ceolum
A. Amity in the body of some animals where the gut and organs are located
Open circulatory system
A circulatory system consisting of a heart that pumps blood through spaces called sinues
Closed circulatory system
A circulatory system in which a heart circulates blood through a network of vessels that forms a closed loop
Segment
One of many identical or almost identical repeating body parts
Exoskeleton
An external skeleton made of protein and chitin
Compound eye
An eye made of many identical light sensitive cells that work together
Antennae
Feelers on an arthropods head that responds to touch, taste, or smell
Mandible
A jaw found on some arthropods
Metamorphosis
The process in which an insect or other animal changes form as it develops from an embryo or larva to an adult
