1. Genetic variation
2. By the female protecting the eggs from predators
3. Birds preferred the striped snails
4. Abiotic environmental
5. Helpful mutation
6. The survivors were likely collected from the dark gray areas on the map. Those from other regions could not adapt.
7. The influence of human beings on nature
8. When the prey population peaks, the predator population is decreasing.
9. The kelp population would decrease: sea otters eat urchins, and urchins eat kelp.
10. The sea turtle population would decrease because the disease would kill off individuals.
I need help with the responses here are the questions and responses.
Question 1(Multiple Choice Worth 3 points)
(04.01 LC)
The shells of a certain species of marine snail are highly variable, with some snail shells being solid colors and others being striped. Which condition of natural selection is this most related to?
Artificial variation
Environmental variation
Genetic variation
No variation
Question 2(Multiple Choice Worth 3 points)
(04.01 MC)
Some fish species, such as tilapia, place the fertilized egg clutch into the mouth of the female. How would this reproductive strategy ensure survival of the species?
By ensuring fertilization of all eggs
By producing higher quality eggs
By the female protecting the eggs from predators
By preventing the fertilization of eggs by low-quality males
Question 3(Multiple Choice Worth 3 points)
(04.01 MC)
The shells of some marine snails are highly variable, with some snail shells being solid colors and others having stripes. Predation by birds is a major source of mortality for the snails. Scientists studying these snails found that while 47 percent of the snail population was striped, 56 percent of the snails eaten by birds were striped. What could scientists conclude about the snails?
Birds preferred the solid snails.
Birds preferred the striped snails.
The shell pattern does not affect the rate of predation.
The shell pattern is due to environmental variation.
Question 4(Multiple Choice Worth 3 points)
(04.03 LC)
In 1989, the Exxon Valdez spilled nearly 42,000,000 liters of oil into Prince William Sound, Alaska. How would this spill be classified?
Abiotic environmental
Biotic environmental
Genetic
Pathogenic
Question 5(Multiple Choice Worth 3 points)
(04.03 MC)
The blue lobster results from a rare genetic mutation. Imagine that this mutation makes the lobsters more attractive to lobsters of the opposite sex, and thus more likely to breed. How would you describe this mutation?
Behavioral mutation
Harmful mutation
Helpful mutation
Neutral mutation
Question 6(Multiple Choice Worth 3 points)
(04.03 HC)
A doctoral student is studying the genetic makeup of a species of jellyfish that occurs at low, middle, and high latitude regions of the Pacific Ocean. On an oceanographic expedition, she collects specimens of the jellyfish throughout its range. Upon returning to the laboratory at the university, an assistant places all of the jellyfish in an aquarium with an average temperature of approximately 20°C. After a few days, he notes that almost two-thirds of the jellyfish have died. Using the figure below, how would you explain which jellyfish likely make up the bulk of the survivors and what the mistake was?
Image shows a world map that is shaded to depict temperatures. The regions shaded black have a temperature range between -4 to 12 degrees Celsius. Regions shaded light gray indicate a temperature range between 12.1 and 24 degrees Celsius. Regions shaded dark gray indicate a temperature range between 24.1 and 32 degrees Celsius.
© 2016 CC-BY-SA
The survivors were likely collected from the dark gray areas on the map. Those from other regions could not adapt.
The survivors were likely collected from the light gray areas of the map. Those from other regions could not adapt.
The survivors were likely from the black areas of the map, but had the most advantageous genes of those collected.
The survivors were likely from the black areas of the map, but adapted to the difference in temperature in the laboratory.
Question 7(Multiple Choice Worth 3 points)
(04.03 LC)
Which of the definitions below best defines anthropogenic?
A change in a cell's genetic material
The infectious agent that causes disease
A substance that increases in concentration
The influence of human beings on nature
Question 8(Multiple Choice Worth 3 points)
(04.03 MC)
What relationship exists between the densities of predator and prey populations, according to the graph "Population Change of a Predator and its Prey Over Time"?
Image shows a graph depicting the population change of a predator and its prey over time. The prey population is indicated by a black line that rises and falls over time. The predator is indicated by a gray line that rises after the black line rises, and falls after the black line falls.
When the prey population peaks, the predator population is decreasing.
As the prey population decreases, the predator population remains constant.
After the prey population increases, then the predator population also begins to increase.
As the prey population increases, the predator population remains constant.
Question 9(Multiple Choice Worth 3 points)
(04.03 MC)
The following illustration shows a food web for a kelp forest off of the coast of California. What do you predict would happen to the kelp population if the sea otter population declined?
The image shows a food web for a kelp forest off the coast of California. Many organisms are shown, with arrows pointing between them. At the bottom of the food web are kelp and microscopic planktonic algae. Arrows point from the kelp upward toward smaller herbivorous fishes and invertebrates, drift algae, large crabs, and sea urchins. Arrows point upward from sea urchins to sea stars and sea otters. Arrows from sea stars point to sea otters and large crabs. Arrows from the large crab point to sea otter and to large fish and octopuses. Arrows point upward from large fishes and octopuses to sea otter. From the sea otter an arrow points upward to the shark.
© 2016 CC-BY-SA
The kelp population would decrease: sea otters eat urchins, and urchins eat kelp.
The kelp population would increase: sea otters eat urchins, but not exclusively.
The kelp population would remain unchanged; sea otters do not eat the kelp.
The kelp population would remain unchanged: sea otters eat urchins, but not exclusively.
Question 10(Multiple Choice Worth 3 points)
(04.04 LC)
What would be the effect on a sea turtle population after a disease has impacted a population?
The sea turtle population would not be impacted at all.
The sea turtle population would increase because they are immune to many diseases.
The sea turtle population would decrease because the disease would kill off individuals.
The sea turtle population would decrease because the disease wouldn't kill off individuals.
1 answer