Invertebrates - Nematoda (Roundworms)

nematoda

roundworm

body plan

bilateral

Protosome or deuterosome?

protosome

nematoda have a _________ digestive system

complete

what is the defining character of the nematoda?

cuticle exoskeleton that they molt (shed) their exoskelton to grow

free-living, parasitic, prey, or predator?

free living or parasitic

cephalization/

very primitive, with nerves

what systems do nematodas lack

circulatory, respiratory, or excretory; everything is exchanged through the epidermis

how is gas exchange performed

through epidermis, and metabolic waste is released in the epidermis

reproduction

monoecious, dioecious, parthenogenic

tissue types

triploblastic, pseudocoelomate

pseudocoelomate

An animal whose body cavity is lined by tissue derived from mesoderm and endoderm.

parthenogenic

Asexual form of reproduction found in females where growth and development of an embryo or seed occurs without fertilization by males