Scientists collected data on the date of onset of the menstrual cycles in a group of women who moved into a college dormitory together in the fall. The y-axis of the graph shows the mean difference (in days) between the onset of a woman's cycle and the average onset date of the rest of the women. Evaluate whether these data provide evidence for the existence of a human pheromone.

Compare and contrast the lateral line system of fishes with electroreception in sharks.

Scientists generally think that a 'good hypothesis' is one that is reasonable and testable and inspires further research into a phenomenon. Using these criteria, explain whether Dalton's hypothesis about color vision was a good hypothesis. Was it correct?

Design experiments to test the hypothesis that electric eels are both electrogenic and electroreceptive.

We know that sea turtle hatchlings use Earth's magnetic field to navigate. Do they also use light cues from the moon to get from the sand to the ocean waves? Outline an experiment to answer this question.

Honeybees live in social groups consisting of a queen, up to several hundred male drones, and thousands of infertile female workers. The drones mate with the queen only, and the workers protect the hive, forage, and feed and groom the queen. The health of the hive depends on the female workers performing these duties instead of reproducing.

What roles do pheromones play in maintaining a functional beehive?

Scientists have identified dozens of pheromones used by honeybees for communication. Which type of sensory system uses pheromones?

a. Mechanoreception

b. Photoreception

c. Chemoreception

d. Thermoreception

e. Electroreception