Ecology Part 2 Illuminate Questions

A natural fire burns a live oak forest in central Florida to bare ground. Over the next 150 years, if the climate and landscape of the area remain the same, which of the following is most likely to occur?

• The area will become a marshy wetland.

• The area will remain bare ground.

• The area will become a younger rainforest.

• The area will become a younger live oak forest.

What would most likely occur over time if the burning and clearing of tropical rainforests stopped?

• an increase in the amount of oxygen released into the atmosphere

• a decrease in the biodiversity of species

• an increase in the amount of atmospheric pollution produced

• a decrease in the source of new medicines

In the event of global warming,which would NOT negatively affect food production?

• decreased UV radiation resulting from increased ozone

• poorer soil in new crop-growing regions

• increased insect populations

• lack of irrigation water in some areas

Which of the following cause eutrophication in a lake?

• toxic chemicals

• polluted sediments

• heavy metals

• excessive nutrients

Which statement best explains how introducing a new species to an area could cause the extinction of another species?

• The new species could attract predators.

• The new species could attract prey animals.

• The new species could eat all of the food in the area.

• The new species could provide more food sources.

The drawing below shows the behavior of a flower bud in late winter and early spring. Which of the following explains why the flower bud opens in early spring?

• It is opening because there is less light in the spring.

• It is opening because of warmer temperatures.

• It is opening because of cooler temperatures.

• It is opening because of drier soil.

The pictures below show how radish seedlings grow in the presence of gravity and light. Which of the following is correct about shoot of the radish seedlings?

• It grows toward light and against the force of gravity.

• It grows away from light and with the force of gravity.

• It grows toward the force of gravity but is not affected by light.

• It grows toward light but is not affected by the force of gravity.

There are only about 100 Florida panthers living in the wild. Which of the following is NOT a reason why the Florida panther has become endangered?

• They require a large habitat in order to survive.

• They cannot handle the changes in temperature due to global warming.

• Much of their habitat has been destroyed.

• They do not reproduce well in captive breeding programs.

Dumping raw sewage into a river will reduce the amount of dissolved oxygen in the water. What effect could dumping raw sewage most likely have on a river ecosystem?

• an increase in fish populations

• a decrease in aquatic animal populations

• a decrease in water temperature due to the energy transfer from osmosis

• an increase in cellular respiration due to the rising level of phosphates in the water

The loss of biodiversity could lead to which of the following?

• niche generalization

• genetic diversity

• overpopulation

• extinction