Across
- 2. Regulation of hormones; either positive or negative
- 5. The study of animal and plant tissues
- 8. Process of maintaining the internal environment
- 11. hair; cats and rats
- 12. organ system; Hypothalamus and pituitary gland
- 14. Tiny bean structure found in the lymphatic system
- 15. Flesh-eating animals
- 17. Animals who hunt and kill
- 19. Plant-eating animals
- 21. The food intake and the process of food conversion is called _________.
- 23. Characteristic that allows animals to obtain food and find a mate.
- 24. A hydra reproduces through _______ means.
- 25. Scientist that studies animals
Down
- 1. Animals who are hunted and killed by other animals
- 3. Capability of skin to blend into surroundings
- 4. The act of taking in oxygen into the lungs and releasing carbon dioxide from the lungs
- 6. Instrument used to cut tissues into ultra-thin sections
- 7. Hard external covering of corals, mollusks, and insects
- 9. Makes food move along the digestive system
- 10. System that consists of the brain and neurons
- 13. Type of tissue; blood cells
- 16. Body segments; earthworms have this
- 18. Structures in animals
- 20. Outer covering of an animal's body
- 22. A firm framework