Animal Crossword

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Across
  1. 3. Hydraulic system found in echinoderms that functions in locomotion, feeding , restraint and waste removal using a network of fluid filled canals and tube feet
  2. 4. A type of egg that contains amnion a fluid filled membrane tat surrounds and protects the developing embryo allowing for development in a terrstal environment
  3. 5. An animal that lacks a backbone or spine
  4. 6. A temporary organ that develops in the uterus during pregnancy and provides nutrients, oxygen and protection to the growing fetus
  5. 10. Free swimming umbrella shaped gelatinous body form of certain cnidarians that is characterized by tentacles and is often associated with sexual reproduction
  6. 14. A gas filled organ in fish that helps control buoyancy allowing the to maintain depth in the water without sinking or floating
  7. 15. A tough, flexible connective that plays a crucial role in the musculoskeletal system
  8. 18. An animal whose body temperature fluctuates with the temperature its surroundings relying on external sources of heat rather internal mechanisms to regulate body temperature
  9. 19. A body plan where an organism can be divided into two halves along a single plane creating distinct left and right sides
  10. 20. Internal skeleton such as bony or cartilage skeleton of vertebrates
  11. 21. shed of old feathers, skin, har or old shell to make way for new growth
Down
  1. 1. Modified sweat glands that produce and secrete milk for lactation in mammals
  2. 2. An organism's body plan where parts are arranged symmetrically around a central axis
  3. 7. An organism that can maintain a constant body temperature through internal metabolic process also known as warm blooded
  4. 8. An organism that possesses both male and female reproductive organs and is capable of producing both male and female gamete
  5. 9. A sessile cylindrical body form found in cnidarians
  6. 11. external covering that provides support and protection for many invertebrate animals
  7. 12. A lack of symmetry or balance in the structure or form of an organism
  8. 13. An animal that has a backbone and skeleton
  9. 16. Anything associated with or occurring on the bottom of a body of water
  10. 17. A form of asexual reproduction where a new organism develops as an outgrowth or bud from the parent organism that eventually detach ad becomes independent