Across
- 1. one of two principal body forms occurring in members of the animal phylum Cnidaria. T
- 6. long, hair-like structures that protrude from certain cells and are primarily used for locomotion
- 8. a genus of small, tube-shaped calcareous sponges belonging to the family Sycettidae
- 9. small openings or pores in the body of an animal or in an organ within the body
- 10. the central cavity of a sponge's body
- 13. having both male and female reproductive organs in the same individual.
- 14. the large opening on a sponge through which water exits the body
- 17. small, hard, needle-like structures that form the skeletal components of various marine and freshwater invertebrates, such as sponges
- 18. a free-swimming, larval stage in the life cycle of many cnidarian species, like jellyfish, corals, and sea anemones.
- 19. relating to or occurring at the bottom of a body of water,
- 21. a form of asexual reproduction where a new organism develops from a small outgrowth or "bud" on the body of a parent organism
Down
- 2. An organism is considered plankton if it is carried by tides and currents, and cannot swim well enough to move against these forces.
- 3. organisms that have both male and female reproductive organs, and can produce both male and female gametes.
- 4. the condition of an animal being either male or female.
- 5. the immature stage of an animal that occurs between the egg and adult stages
- 7. a type of sponge with a simple body plan and a distinct water circulatory system
- 8. does not move
- 11. a type of sponge with a complex structure that includes a thick body wall and a highly branched canal system
- 12. organisms that eat by filtering small food particles from water
- 15. a free-swimming, bell-shaped stage of the Cnidaria phylum of invertebrates, and is the typical form of a jellyfish
- 16. a flexible material that makes up the fibrous skeleton of most sponges, and is a modified type of collagen protein:
- 20. the contraction of the heart muscle