MasteringBiology Hw 2

5. You wish to develop a machine to decode sounds that dolphins make that humans are unable to hear. What type of sound will your invention detect?

ultra-high frequencies

24. What percent of the plant species found on Madagascar are unique to that island?

80%

20. From 1930 to 1939 fire ants spread inland about 60 miles from their point of introduction in Mobile, Alabama. What was the cause of their spread over this distance?

A natural spread

26. What is a lemur?

A primate only found on Madagascar

17. What characteristics of lionfish contribute to their ability to spread and become established in new areas?

A single lionfish female may produce up to 2 million eggs a year. The eggs float for up to a month, spreading the lionfish populations.

3. Which of the following animals finds prey using the same technique as dolphins?

Bats by using echolocation

21. From 1940 to 1970 fire ants spread through many southern states, sometimes at a rate of 100 miles in a year. What was the cause of their spread over this distance?

Being transported along with plants and soil

18. How did the fish biologists determine the diet of lionfish in the regions where the lionfish have invaded?

Biologists examined the contents of the stomachs of lionfish caught in the wild.

27. Much of the original forest cover on Madagascar has been destroyed primarily as a result of _______.

Burning for algricultural purposes

19. Based upon what we are learning about invasive lionfish populations in the Caribbean and along the Atlantic coast of the U.S., these lionfish populations ________.

Cannot be eliminated by any means currently known

6. A physiologist incubates eggs in the lab at a range of temperature to see what temperature produce males and what temperature produce females.

Hypothesis Driven: NO Manipulative

10. A sociologist conducts a survey in Hawaii to describe peoples' attitude about global climate change.

Hypothesis Driven: NO Observational

11. A scientist determines the average wind speed, and variation in the amount of wind, in a number of locations to see which locations would be most suitable for wind turbines.

Hypothesis Driven: NO Observational

8. An ecologist predicts turtles grow larger when no predators are around. She places turtles in an experimental pond system where half the ponds have predators and half the ponds have had the predators removed.

Hypothesis Driven: YES Manipulative

7. A biologist predicts that shade might influence ground temperature, and therefore turtle sec ratios. He records the same sex ratio of turtles hatchlings in shaded and unshaded regions.

Hypothesis Driven: YES Observational

9. A climatologist predicts that concentration of CO2 in a city will be negatively correlated with the amount of wind in the city. He collects data and looks at the amount of CO2 in a city as a function of the wind speed in the city.

Hypothesis Driven: YES Observational

1. What makes the Wild Dolphin Project unique?

It is the longest running underwater study of its kind

14. Experimental application: Predicting the fate of other reptiles

Least Bias: Snake Painted Turtle/Alligator Tuatara

15. Why do we classify lionfish populations near the eastern U.S. as an invasive species? What suggests that these new populations are not an expansion of the lionfish's natural range?

Lionfish are native to the tropical Pacific. There are no natural water routes of warm water between the Pacific and Atlantic oceans

22. In 1958 federal law restricted the movement of soil and plants from areas where fire ants were established. Why was this law unsuccessful in stopping the spread of fire ant colonies?

People were unaware of the federal law and, when they moved, transported plants bearing fire ants colonies; a single mated queen can be transported without being noticed; and many states thought to be free of fire ant colonies already had them

23. Technique used, or are being considered for use, in controlling the spread of fire ants include _______.

Setting baits that kill the queen when they are carried back to the nest, applying chemical powders that kill the colony, introducing a protist to infect the fire ant queen and her eggs, and introducing a fly that lays eggs in fire ants so that the eggs will hatch into larvae that eat their way into the ants' heads, which will then fall off

28. What is the cause of the red color of the waters about Madagascar?

Soil that has washed into the ocean

16. Based upon what we are learning about the lionfish diet, what is most likely going to happen to Caribbean coral reefs invaded by lionfish?

There will be fewer algae eating fish. More algae will grow over and damage corals.

12. Background research: Identifying reliable sources a) Journal of Geophysical Research: Atmospheres b) National Geographic c) Climate Dynamics d) The New York Times e) www.globalclimatescam.com

a) Primary Lit. - Yes Reliable - Yes b) Primary Lit. - X Reliable- Yes c) Primary Lit. - Yes Reliable - Yes d) Primary Lit. - X Reliable - Yes e) Primary Lit - X Reliable - X

13. Experimental results: How much temperature change can the turtles withstand? a) The x axis shows _______. The y axis shows ______. b) At low temperatures, only ________ are produced. c) At high temperatures, only _________ are produced. d) Between 21 and 25C, as ________ goes up, ________ goes down. d) At the average nest temperature of 23C, approximately _______ of hatchlings are male. e) If the global temperature rises 4C, approximately ______ of hatchlings will be male.

a) nest temperature, percentage of hatchlings that are male b) males c) females d) nest temperature, percentage of hatchlings that are male e)50% f)0%

2. You are a marine biologist interested in how dolphins navigate through the oceans. Which of the following sounds should you focus on?

clicks

25. The human population of Madagascar doubles about every _____ years.

25

4. Which of the following has been a large part of Dr. Denise Herzing's research?

video