Invertebrates Terms Crossword

In aquatic animals, this structure allows fish to breathe
animal with no backbone
organism with more than one cell. The cells work together
skeleton on the interior of the organisms body
skeleton on the exterior of the body
basic need of all living things
flattened organism with a digestive system and only one opening
Round, cylinder body with two openings
animal with joints on their appendages and legs and a jointed exoskeleton
An organism that filters the water for food; Think Patrick's best friend
organism that lives in or on another organism
animal with a soft body and no skeleton
the action or process of regenerating or being regenerated, in particular the formation of new animal tissue
cnidarians have stinging cells called _______________.
heart that circulates blood that forms a closed loop
when the end of an organism contains all nerve tissues and sensory organs
nearer the front, especially situated in the front of the body or nearer to the head
irregular in shape; containing no symmetry
body cavity that contains organs
relating to the upper side or back of an animal or organ
appendage that makes some invertebrates mobile
organism can be split into two equal halves and no more
___________ is a carbohydrate that forms part of the exoskeleton of arthropods.
body part of crustaceans made of the head and thorax
half of the crushing organ in an arthropod's mouthparts
an outer or enclosing layer of tissue
what happens between the caterpillar and butterfly stage
shedding an old shell, to make way for a new growth.
nerve cells are linked to one another in a web
a cartilaginous skeletal rod supporting the body in invertebrates
further back in position; of or nearer the rear or hind end
body plan where all parts are centered around a circular axis
back part of the body of an arthropod; part of an insect's body behind the thorax
the major cord of nerve fibers running the length of an animal's body
false body cavity
arachnid with 8 legs
these never go away in the summer; are considered a nuisance
tube where invertebrates get rid of waste
both digestive and circulatory cavity
a marine echinoderm with five or more radiating arms