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Invertebrates

Connor Adams
Biology II
Across
A way to classify animals
Feeders that gather their food through water
Animal whose blastopore develops into its mouth
Body divided into individual segments
Stage in animal development where 3 germ layers develop
Lower side of animal
System in which blood moves through the body entirely enclosed in vessels
Egg's are fertilized outside the female's body
Taking in oxygen; giving off carbon dioxide
No tissues or organs
Hard covering on the outside of some animals
An organism that depends on another organism for food
Animal whose blastopore develops into its anus
Animal whose body cavity is fully lined with mesoderm
Down
The periodic shedding of an old exoskeleton
Used by cnidarians to capture food
In insects, a series of chemically-controlled changes in body structure from juvenile to adult
Water animals, feed off the ocean floor, and spiny skin
System where blood moves through vessels into open spaces around organs
Upper side of animal
Eggs are fertilized inside the female's body
Cnidarian body form that is umbrella-shaped with tentacles
Body parts arranged around a central point
A young organism different from the adult
An organism's ability to replace body parts
Arrangement of body structures
Most have shells for protection, soft body, and a muscular foot
The phylum given to sponges
Cnidarian body form that is tube-shaped with mouth surrounded by tentacles
Organism that is permanently attached to a surface