Georgia State Biology 1104k Test 3 Questions with Complete Solutions What defines a vertebrate? - Correct Answers ✅Possess a supportive vertebral column, in which protects dorsal hollow nerve cord, and is more supportive than notochord. Cartlilage or bone replaces notochord in adults.Do humans possess a notochord? - Correct Answers ✅Yes.Only during embryonic development.Early fish? - Correct Answers ✅Were jawless.Cartilaginous fish - Correct Answers ✅Sharks, rays, and skates.Ray-finned fish - Correct Answers ✅Possess body skeletons, body rays support fins,and swim bladders.Lobe-finned fish - Correct Answers ✅Possess a swimbladder, jointed bones and fins rather than body rays, and thick, jointed limb bones an important step toward weight-bearing legs.What factors contribute to the challenges to life on land? - Correct Answers ✅Air is not supportive, as gravity pulls down on the body and gills collapse outside of water. Air contains little water, thus water is constantly lost across body surfaces, gills, and lungs. 1 / 2
Georgia State Biology 1104k Test 3 Questions with Complete Solutions Class Amphibia - Correct Answers ✅First tetrapods (4- footed animals). Use both lungs and skin to respire. Yet, almost exclusively confined to moist environments. Their skin is very thin and gas-permeable, and eggs are surrounded by a thin membrane as well. They are highly sensitive to environmental changes because larvae must develope in water. Examples include wormlike caecilians, frogs and toads, and salamanders.What adaptations give reptiles and mammals greater independence from water? - Correct Answers ✅1. Amniotic egg, in whichresista water loss but allows gas exchange and stores energy as yolk.
- Thickened skin prevents water loss covered with hair,
- Fertilization occurs inside the female body rather than in
- Excretory systems capable of conserving water.
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scales, or feathers.
water.
Class Reptilia - Correct Answers ✅Possess scales and shelled eggs containing a small pond for embryonic developement. Examples include lizards, snakes, turtles, and birds.Birds - Correct Answers ✅Are a subgroup of reptiles adapted to flight. Their wings are modiflied forelimbs, wing