16A (bio)

• Hydroskeleton has collagen which is an essential part of skin, muscle, bones. jellyfish use water enviroment to fill the cavity inside them
• Jellyfish require a watery environment to fill the cavity inside their bodies
• Animals need a way to exchange gases to continue life-sustaining cell processes & organs
• Animals need to exhale carbon dioxide in their bodies to get nutrients
• Reproduction


  Mostly sexual, requiring gametes to form diploid zygote, some asexual, some both
• Circulation


  Primarily transport food & materials
• Body plan is the arrangement of physical features that contribute to structure
• Animals have locomotion using limbs, appendages for support
• Most animals have some form of support to hold their weight
• Animals may become sessile or fixed in one place, detached, or exhibit suspension feeding
• Endotherms derive most of their body heat from metabolism
• Most vertebrates have a backbone
• 97% of all animals are invertebrates
• Endotherms have complex internal mechanisms to regulate body temperature
• Endotherms are not always at the same temperature as their environment
• Ecotherms use behaviors to regulate their body temperature instead of internal mechanisms
• Ectotherms often have body temperatures near to their environment
• Ectotherms use behaviors to regulate their body temperature
• Torpor is used by both endothermic and ecothermic animals to escape extreme temperatures by slowing life processes and dropping temperature
• bilateral symmetry is divided by a plane through the center to form mirror images of the body
• radial symmetry is divided by a plane in several places, no left or right sides (ex: starfish)
• no symmetry are animals who has bodies that are asymmetrical
• When sperm reaches an egg, it forms a zygote
• Germ layers


  Layers of cells, most animals typically have three. They influence how an animal's body takes shape, enabling it to get nourishment, dispose of wastes, and respond to changes in its environment, maintaining homeostasis