Why do arthropods molt?
So they can grow
What five characteristics set arachnids apart from other arthropods?
- 4 pairs of walking legs
- a cephalothorax instead of a separate head and thorax
- usually have 4 pairs of simple eyes
- no antenna
- respiration done through organs
What four characteristics set insects apart from other arthropods ?
- 3 pairs of walking legs
- usually have wings at some point
- one pair of antennae
- three segments, head, thorax and abdomen
What are the stages of incomplete metamorphosis?
egg, nymph, adult
What takes the place of a respiratory system in insects?
Tracheas runs throughout the body providing oxygen to all tissues.
If an insect has horny wings that protect membranous wings to what order does it belong?
Coleoptera - The Beetles
If an insect has leather-like wings that protect membranous wings to what order does it belong?
Orthoptera - Grasshopper and Crickets
Exoskeleton
A body covering, typically made of chitin, that provides support and protection
Simple eye
An eye with only one lens
Open circulatory system
A circulatory system that allows the blood to flow out of the blood vessels and into various body cavities so that the cells are in direct contact with the blood
Statocyst
The organ of balance in a crustacean
Gonad
A general term for the organ that produces gametes
