<p>Biodiversity Study Guide</p><p>Define the following:</p><p>Natural Selection - </p><p>Selective Breeding – </p><p>Adaptations – </p><p>Sexual Selection – </p><p>1) ______– variety of life in an ecosystem; measured by number of species in area </p><p>2) How would a deer population be affected if a wolf population began to drastically decline due to a new disease?</p><p>3) Male beetles with large mandibles are best at guarding their burrows where females have laid eggs. Males whose mandibles are absent are best at digging alternate entrances to a guarded burrow to reach females. The table below shows the number of male stag beetles with different mandible types in one population. </p><p>Which two mandible types will probably become more common in the population over time?</p><p>3) The table below shows the percentage of individuals in a population of insects that is resistant to certain types of insecticides. Which two populations would be most affected by a widespread use of insecticide 3? 4) ______– # 1 reason for reduced biodiversity (ex. deforestation)</p><p>5) Large sea urchin populations can eat so much kelp (a kind of seaweed) that the seafloor becomes bare. Otters eat sea urchins. What is the most likely consequence of a decline in the sea urchin population due to an increase in the otter population?</p><p>6) ______crowd out native species, introduced by humans</p><p>7) We need to maintain biodiversity because every species plays an important part in complex ______.</p><p>8) Bees play an important part in ______plants and crops.</p><p>9) What is the most common measure of biodiversity?</p><p>10) As you move toward equator biodiversity increases. Why?</p><p>11) ______of fossils can be determined by their location in rock layers.</p><p>12) Label the following fossils found in lake sediment below from youngest to oldest.</p><p>13) Two fossils are believed to be approximately the same age. What evidence might suggest this?</p><p>14) Two geologic columns are shown below. Which layers were most likely deposited at the same time? 15) Why are some organisms brightly colored?</p><p>16) What are 3 adaptations of desert plants?</p><p>17) What are adaptations of water plants?</p><p>18) Why would a certain plant species evolve to smell like a rotting carcass? </p><p>19) Draw or describe the feet of a bird that has to swim to find food.</p><p>20) What are some adaptations of animals found in the Arctic tundra?</p><p>21) Why would a plant species evolve to have small needle like leaves that stay green year round?</p><p>22) What are 3 adaptations of plants found in grasslands?</p>