Which group of organisms will have a gizzard that will help mechanically grind up food?
a. Humans
b. Cattle
c. Hawks
d. Fish
e. Anemone
c
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What is the closest parallel in animal structural levels of complexity to the branches, buds, flowers, seeds, and fruits of flowering plants?
A. Subcellular, specialized organelles. B. Bone cells, muscle cells, skin cells, nerve cells. C. Muscle tissue, connective tissue, nervous tissue, epithelial tissue. D. Heart, lungs, stomach, kidney, reproductive organs. E. Digestive system, reproductive system, skeletal system.
Behavioral traits are useful in differentiating species because behaviors ____
a. are never genetically determined b. related to mating may create prezygotic isolation c. of fossilized specimens are easy to infer d. are independent of morphological characteristics e. are always learned
Why is an estuary considered an intermediate biome?
A) It is the transition zone between freshwater and saltwater biomes. B) It is intermediate in size, smaller than the largest biomes but larger than the smallest biomes. C) It will seasonally dry up and cease to be a biome. D) It is only a biome during high tide.
What evolutionary role is served by the redundancy of the genetic code? What will be an ideal response?