animal crossword

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Across
  1. 2. the 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
  2. 4. animal with a backbone
  3. 6. ectothermic-any so-called cold-blooded animal
  4. 8. snake molts its skin
  5. 10. Eggs-eggs that are encased by extra-embryonic membranes
  6. 11. internal skeleton, such as the bony or cartilaginous skeleton of vertebrates.
  7. 13. an animal) dependent on or capable of the internal generation of heat.
  8. 14. Symmetry- the property of being divisible into symmetrical halves on either side of a unique plane.
  9. 16. rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection.
  10. 18. Symmetry-symmetry around a central axis, as in a starfish or a tulip flower.
  11. 19. Glands-the milk-producing gland of women or other female mammals.
Down
  1. 1. vascular (supplied with blood vessels) organ in most mammals that unites the fetus to the uterus of the mother
  2. 3. free-swimming sexual form of a coelenterate such as a jellyfish, typically having an umbrella-shaped body with stinging tentacles around the edge. In some species, medusae are a phase in the life cycle which alternates with a polypoid phase
  3. 5. associated with or occurring on the bottom of a body of water
  4. 7. or developing buds
  5. 9. Vascular System-hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration.
  6. 10. of proportion between the parts of a thing. especially: want of bilateral symmetry. asymmetry in the development of the two sides of the brain.
  7. 12. 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. In some species, polyps are a phase in the life cycle which alternates with a medusoid phase
  8. 15. invertebrate is a cold-blooded animal with no backbone
  9. 17. Bladder-flexible-walled, gas-filled sac located in the dorsal portion of body cavity
  10. 20. an animal) shed old feathers, hair, or skin, or an old shell, to make way for a new growth.