animals

2. An animal whose body temperature relies on external environmental heat
6. A form of asexual reproduction where a new organism grows out of the body of a parent Hermaphrodite An organism that has both male and female reproductive organs
8. Arrangement of body parts around a central axis like a wheel
9. A strong, flexible connective tissue found in joints and skeletons
14. An organ that connects the developing fetus to the mother's uterine wall to supply nutrients
18. A hard external skeleton that supports and protects an animal's body
19. An internal skeleton made of bone or cartilage

1. A network of water-filled canals in echinoderms used for movement and feeding
3. An animal without a backbone
4. The free-swimming, bell-shaped stage of a cnidarian life cycle
5. Having no symmetry or balanced pattern
7. Having mirror-image left and right halves
10. Eggs with a protective shell and membranes that allow reptiles, birds, and mammals to reproduce on land Endothermic Able to regulate and maintain a constant internal body temperature using metabolic heat
11. An internal gas-filled organ that helps fish control buoyancy
12. Glands in female mammals that produce milk to feed young
13. An animal with a backbone or spinal column
15. Living at the bottom of a body of water
16. The sessile, cylindrical stage of a cnidarian life cycle
17. To shed an old outer covering or exoskeleton for growth