animal crozzword

2. a gas-filled sac present in the body of many bony fishes, used to maintain and control buoyancy.
4. an internal skeleton, such as the bony or cartilaginous skeleton of vertebrates.
6. anything associated with, or occurring on, the bottom of a body of water, including the organisms that live there
9. an animal or plant having both male and female reproductive organs, structures, or tissue
11. the property of being divisible into symmetrical halves on either side of a unique plane.
14. a unique hydraulic system found in echinoderms (like starfish and sea urchins) that functions in locomotion, feeding, respiration, and waste transportation, using a network of fluid-filled canals and tube feet
16. a highly evolved and specialized organ developing on each side of the anterior chest wall
17. a solitary or colonial sedentary form of a coelenterate such as a sea anemone, typically having a columnar body with the mouth uppermost surrounded by a ring of tentacles.
18. one whose body temperature is largely determined by its surroundings, meaning it relies on external sources of heat rather than internal metabolic processes to regulate its temperature
19. an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.
20. lack of equality or equivalence between parts or aspects of something; lack of symmetry.

1. having or developing buds.
3. an egg with extra membranes that surround and protect the embryo
5. a rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection.
7. firm, whitish, flexible connective tissue found in various forms in the larynx and respiratory tract, in structures such as the external ear, and in the articulating surfaces of joints
8. shed old feathers, hair, or skin, or an old shell, to make way for a new growth.
10. an animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate,
12. a free-swimming sexual form of a coelenterate such as a jellyfish, typically having an umbrella-shaped body with stinging tentacles around the edge.
13. something being equally symmetrical around a central point, typically divided in a wedge similar to a fan blade
15. dependent on or capable of the internal generation of heat.
17. an organ that forms in the womb, also called the uterus, during pregnancy