1. In the ecological relationship described, what is the primary role of zooplankton for the Moon Jellies?
- A. A source of energy
- B. A form of camouflage
- C. A cleaner of parasites
- D. A regulator of water salinity
2. According to the hypothesis presented, what is the most direct way an increase in zooplankton would cause the Moon Jelly population to grow?
- A. It causes individual jellies to grow to a much larger size.
- B. It allows the jellies to live longer and avoid disease.
- C. It provides the extra energy needed for reproduction, leading to a higher birth rate.
- D. It forces other competing species to leave the area.
3. How do Energy Storage Molecules obtained from eating zooplankton directly contribute to an increase in the Moon Jelly population?
- A. They are converted into the raw materials for building new offspring.
- B. They increase the water temperature to optimal breeding levels.
- C. They are used by the jellies to fight off predators more effectively.
- D. They provide the chemical energy that powers the biological process of reproduction.
4. A scientist is studying the hypothesis that more food led to a boom in the Moon Jelly population. Which piece of evidence would offer the strongest support for this specific hypothesis?
- A. Water samples show a significant drop in the number of predators that eat Moon Jellies.
- B. Genetic analysis shows the Moon Jellies are not related to jellies in a neighboring bay.
- C. Data shows a large increase in the zooplankton population occurred just before the Moon Jelly birth rate began to rise.
- D. The average size of an individual Moon Jelly has remained unchanged for the past five years.
5. If a severe drought on land reduced the flow of nutrients into the ocean, causing the zooplankton population to crash, what would be the most likely immediate impact on the Moon Jellies?
- A. The Moon Jelly population would adapt to eat algae instead.
- B. The Moon Jellies' rate of reproduction would decline due to energy scarcity.
- C. The entire Moon Jelly population would die off within a week.
- D. Individual jellies would shrink to conserve energy.
6. A scientist hypothesizes that an observed increase in a jellyfish population is due to a reduction in 'predation pressure.' What does this hypothesis suggest is the primary cause?
- A. The water temperature has become more favorable for jellyfish reproduction.
- B. A new food source has become available for the jellyfish.
- C. Fewer jellyfish are being eaten by their natural predators.
- D. The jellyfish are competing more successfully against other species.
7. If the number of births in a Moon Jelly population remains constant, which of the following changes would cause the overall population to grow?
- A. An increase in deaths
- B. A decrease in deaths
- C. An increase in emigration
- D. A decrease in available food
8. The change in a population's size is determined by births and deaths. If a population of 5,000 jellies experiences 1,500 births and 1,000 deaths in one season, what is the net change in the population?
- A. A decrease of 500
- B. An increase of 500
- C. An increase of 2,500
- D. A decrease of 1,000
9. In a forest ecosystem, owls primarily hunt mice. A new disease suddenly reduces the owl population. Assuming the mice's food supply is plentiful, what is the most probable outcome for the mouse population?
- A. The mouse population will likely increase due to a lower rate of predation.
- B. The mouse population will decrease because their main predator is gone.
- C. The mouse population will stay the same, as other predators will immediately take the owls' place.
- D. The mice will evolve to be larger to avoid other predators.
10. In an ocean ecosystem, sea turtles are the primary predators of Moon Jellies. If the sea turtle population were to significantly decrease, what would be the most likely immediate effect on the Moon Jelly population?
- A. The Moon Jelly population would decrease due to a lack of food.
- B. The Moon Jelly population would increase because their death rate from predation would fall.
- C. The Moon Jelly population would remain stable because their birth rate would also decrease.
- D. The Moon Jelly population would migrate to a new area to find different predators.