Across
- 2. accompanied by or requiring the absorption of heat
- 4. The benthic zone is the ecological region
- 5. an animal of a large group distinguished by the possession
- 11. to shed hair
- 12. having or developing buds
- 13. The type of egg produced by reptiles
- 15. is a network of water vessels in the body,
- 17. symmetry around a central axis
- 18. Abnormal tissue growth on a mucous membrane.
- 19. flexible connective tissue found in various
Down
- 1. An ectotherm is an organism in which internal physiological sources
- 3. Glandular organ located on the chest
- 4. is the property of being divisible
- 6. is a rigid external covering for the body
- 7. a gas-filled sac present in the body of many bony fishes
- 8. an animal lacking a backbone
- 9. is a free-swimming sexual form of a coelenterate
- 10. a flattened circular organ in the uterus of pregnant eutherian mammals
- 14. lack of equality
- 16. an internal skeleton