Crustacean & Annelid Flashcards
Scrap the features of a copepod
They are microscopic, the small legs on the head, on the head, and they have a single eye
Describe the features of a barnacle
They have no symmetry, lives in a non jointed she’ll, no head, feeds with legs
Describe the features of shrimp
They have 10 functional legs, airhead and thorax are fused together (cephalothorax), swimmerets (plepods)
Describe the features of an amphipod
And flattened laterally, they have 14 legs on the thorax, swimmerets (plepods)
Describe the features of a lobster
They have 10 functional legs, head and thorax are fused together, swimmerets
Describe the features of krill
Legs are “ice rakes” and are gathered at the front, 6 filtering legs and 5 swimmerets
Describe the features of crabs
10 functional legs, head and thorax are fused together, abdomen folded under the cephalothorax
What are the characteristics of arthropods
1) jointed legs
2) exoskeleton
3) bilateral symmetry
4) complete digestion
5) segmented body
What are some character tics all crustaceans share
1) nauplius larval form
2) 2 pairs of antenna
3) Mostly marine
4) Reproduce after molding
Which crustaceans have swimmerets? And why?
Lobsters, krill, and shrimp. Used for swimming instead of crawling
Characteristics that make the barnacle unique
1) sessile as adults
2) don’t have a head
3) filter feed
What do all organisms in class Malacostraca have in common?
20 body segments, 1 pair of legs per segment
What do all organisms in class maxillapoda have in common?
1) mostly small
2) fewer appendages
3) Feed with maxillae
What characteristics do all Annelids have in common
1) bilateral symmetry
2) body segmentation
3) closed circulatory system
4) complete digestion
5) body cavity
6) no skeleton
What are the marine classes of Annelids and what are their characteristics
Class Polychaeta- parapodia with setae, some produce and live in tubes
