🪱 Annelids and Arthropods sql Copy Edit

What are characteristics of annelids?

Segmented body, bilateral symmetry, true coelom, closed circulatory system, hydrostatic skeleton

Give examples of annelids.

Earthworms, leeches, marine worms

What are errantians?

Mostly mobile annelids with many bristles and parapodia

What are sedentarians?

Less mobile annelids including earthworms and leeches

What are characteristics of arthropods?

Segmented body, exoskeleton of chitin, jointed appendages, open circulatory system, molts to grow

Give examples of arthropods.

Insects, spiders, crustaceans, centipedes

What is a cephalothorax?

Fused head and thorax, found in spiders and crustaceans

How is a cephalothorax different from a head and thorax?

Head and thorax are separate regions, found in insects

How do millipedes and centipedes differ?

Millipedes have two pairs of legs per segment; centipedes have one pair per segment