STICKLEBACK Post-Test

Define "Morphology."

• Study of morphine.

• Study of mighty morphin power rangers.

• Study of form and structure of organisms.

• Study of firm and sturdy organisms.

Tags

NGSS.MS-LS4-2

Define "Model Organism."

• Organisms that model.

• Nonhuman species extensively studied to understand particular biological phenomena.

• Organs used in mannequin models.

• Human species extensively studied to understand particular biological phenomena.

Define "Evolution."

• The process of change in the characteristics of a species over several generations and relies on the process of natural selection.

• The process by which a species becomes better suited to its environment.

• The process where organisms that are best suited to their environment survive and pass on their genetic traits in increasing number to successive generations.

• The process of intentional reproduction of species in a population that have desirable traits.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

NGSS.MS-LS4-4

What is a stickleback?

• A stick with a back.

• A ticklish back.

• A shark.

• A small fish with sharp spines along its back, able to live in both salt and fresh water and found in both Eurasia and North America.

How did some ancestral sea-run stickleback populations come to live exclusively in fresh water?

• They became trapped in lakes that formed at the end of the last ice age.

• These populations swam to freshwater lakes to spawn and then never returned to the ocean because there were fewer predators in lakes.

• They don't actually live exclusively in fresh water; they only live in fresh water at certain stages in their lives.

• They developed traits that made them better adapted to fresh water and, as a result, had to move to a freshwater environment to survive.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

NGSS.MS-LS4-2

NGSS.MS-LS4-4

When you "scored" the stickleback fish, you were trying to decide if they had...

• Complete Pelvic Spines.

• Reduced Pelvic Spines.

• Absent Pelvic Spines.

• All of the Above.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

What conclusion can you draw from your graph in Experiment 1?

• The graph indicates that Bear Paw Lake has more fish than Frog Lake.

• The data suggest that fish in Bear Paw Lake are bigger than those in Frog Lake.

• The graph suggests that all fish in Bear Paw Lake lack pelvic spines and all fish in Frog Lake have pelvic spines.

• The data suggest that the fish in Frog Lake vary widely in pelvic structures.

Tags

NGSS.MS-LS2-4

Which statement below best represents the relationship between age and position of sediment layers in the Nevada lake quarry?

• The top layer of sediment was the first to be deposited, and therefore, it must be the oldest.

• The oldest layer analyzed from this ancient lake occurs in the middle of the strata as a consequence of uplift due to an earthquake roughly 10 million years ago.

• The lowest layer of sediment is the oldest.

• Of the six layers of fossils analyzed, we only know that the top layer is the youngest because layers below it were deposited randomly without any systematic pattern.

Tags

NGSS.MS-ESS1-4

Which statement below best describes what happened to the stickleback population in the ancient lake that is now the Truckee Formation?

• The frequencies of reduced and complete pelvic phenotypes fluctuate from layer to layer, but overall, there is no trend in gain or loss of either trait in the population.

• Initially, the stickleback population in the lake consisted mostly of fish with pelvic spines, but over 15,000 years the population changed to fish without pelvic spines.

• Initially, very few fossil stickleback sampled had the complete pelvic phenotype, but in the following 15,000 years, the frequency of this phenotype in the population increased significantly.

• The frequencies of absent and reduced pelvic phenotypes are roughly equal throughout the 15,000-year time span studied because the lake became flooded at one point, which allowed trout to enter the lake from other areas.

Tags

NGSS.MS-LS4-1

Why was it appropriate to use a line graph to summarize the results from experiment 3?

• Line graphs are used to compare characteristics of organisms from different populations at a single point in time.

• A line graph is the only type of graph with both dependent and independent variables.

• A line graph is the only type of graph that can include time as one of the variables.

• Line graphs are used to represent continuous data.