Across
- 2. A phylum of diverse animals which includes both animals with backbones and those without.
- 5. The phylum of invertebrate animals with specialized stinging cells such as jellyfish, corals and anemones.
- 8. Animals such as clams, oysters and scallops which have two shells are often called _______.
- 10. Animals that have backbones. Fish, sea mammals and humans are vertebrate animals.
- 11. Numerous small, water-filled fleshy tubes used by sea stars and in other echinoderms for locomotion, feeding, breathing and, in some cases, seeing.
- 13. The end part of a leg or the muscular disc that a snail or slug moves on.
- 16. The physical place where an organism lives.
- 17. An accumulation of decayed organic material (plant or animal).
- 19. The phylum of soft-bodied animals that includes snails, slugs, clams, oysters and octopi.
- 20. Animals that have no backbone. Insects, crabs and lobsters, snails, clams, octopi, starfish, sea urchins and worms are all _____________.
- 24. The removal or expulsion of internal organs. Sea cucumbers __________ in response to stress.
- 25. Usually microscopic plants and animals that float or drift in the sea or freshwater. They are the base of most marine food chains.
- 26. The part of the beach covered with water when the tide is in and uncovered when the tide is out.
- 28. The phylum of invertebrate animals with jointed limbs such as crabs, shrimp or barnacles.
- 30. A special characteristic of a living thing which helps it to survive in its environment.
- 32. A tubelike organ used by clams, octopi and other mollusks for drawing water in and out of their bodies. The clam's neck is its ______.
Down
- 1. Animals that capture and eat other animals are _________.
- 3. Long, slender, flexible growths that may be used in feeding, locomotion or various sensory activities. Anemones have _________ around their mouths.
- 4. A fundamental biological division; a sub-division of genus. A scientific name has two parts, genus and _______. The species name is always written in lowercase and underlined or italicized.
- 6. Animals that are eaten by other animals are called ____.
- 7. A colour, shape or behaviour that helps hide an animal.
- 8. Living on the bottom. Plants and animals that live on the bottom of the ocean are called _______ animals.
- 9. Hard outer covering such as found on clams, snails and oysters.
- 12. A process of development of species or organisms from early primitive form to their present state, usually involving adaptations for better survival in their environment.
- 14. The alternate rise and all of the surface of the oceans and seas caused by the attraction of the moon and sun.
- 15. Marine slugs.
- 18. To escape or get away. Prey try to _____ predators.
- 21. The phylum of invertebrate animals with spiny skin such as sea stars, sea cucumbers and sea urchins.
- 22. A barbed, threadlike stinger found in anemones, jellyfish and other cnidarian animals.
- 23. The shedding of the exoskeleton. Crabs must ____ their shell in order to grow.
- 27. A classification of plants and animals with common distinguishing characteristics. _____ is the first part of a two-part scientific name which each kind of organism carries. It is always capitalized and underlined or italicized.
- 29. A system of classifying living things into groups which are related.
- 31. One of the broad, principal divisions of the plant or animal kingdom. The ______ is based on body plan.