FREE AND STUDY GAMES ABOUT ECOLOGY--MANOYLOV

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FREE AND STUDY GAMES ABOUT ECOLOGY--MANOYLOV

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -111 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Adult green woodhoopoes will stay close to their natural territories and help raise the young of close relatives, rather than dispersing to produce their own young because...

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helpers increase their inclusive fitness and exhibit strong philopatry, as high quality territories with suitable roosting cavities are limited

Question 2: Which of the following organisms is not an Ectotherm?

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walrus Question 3: Small, mobile and mostly microscopic organisms that live suspended in water are called

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plankton

Question 4: Which of the following could qualify as a top-down control on a grassland community?

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effect of grazing intensity by bison on plant species diversity Question 5: According to the competitive exclusion principle, two species cannot continue to occupy the same

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niche Question 6: Which of the following abiotic factors has the greatest influence on the metabolic rates of plants and animals?

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temperature Question 7: A freshwater fish was accidentally placed in salt water. After several minutes in this saline water, it died. What is the most logical explanation for its death?

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Loss of water by osmosis in cells in vital organs resulting in cell death and eventually organ failure

Question 8: Why is a pathogen generally more virulent in a new habitat?

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Hosts in new environments have not had a chance to become resistant to the pathogen through natural selection.

Question 9: The number of trophic levels in an ecosystem is limited by...

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the loss if energy with each transfer between trophic levels Question 10: From the example provided in the lab manual, page 253, figure 11.8 what is the maximum number of pray that will still lead to predator population numbers declining

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49

Question 11: In temperate lakes, the surface water is replenished with nutrients during turnovers that occur in the

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autumn and spring Question 12: Plants can reduce their _____ gain by orienting their leaves parallel to the rays of the sun.

Answer:

Hr

Question 13: Ephemerellid mayflies under attack by stoneflies will typically

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adopt a posture which increases their apparent size, so that the predator will avoid them.Question 14: Which of the following terms is used by ecologists to describe the community interaction where one organism makes the environment more suitable for another organism?

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facilitation Question 15: True or False: Eastern Skunk Cabbage (Symplocarpus foetidus) stores large quantities of starch in a large root, and then translocates it to the inflorescence where it is metabolized thus generating heat 30 C higher than the surrounding temperature.

Answer:

True

Question 16: In general, a south-facing slope in the Northern Hemisphere is

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drier and sunnier Question 17: Which of the following describes why elephants are the keystone species in African grasslands?

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Essentially all of the other species depend on the presence of the elephants to maintain the community

Question 18: The emission of electromagnetic waves by all objects warmer than absolute zero is

called:

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radiation Question 19: If a small organism has surface area of 6 µ2 and volume of 1 µ3, this organism will have ......... µ-1 surface to volume ratio. A large organism with surface area of 384 µ2 and volume of 512 µ3 will have ......... µ-1 surface to volume ratio.

Answer:

6, 0.75

Question 20: True or False: Terrestrial environments show less temperature variations than aquatic environments.

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False Question 21: True or False: Homeotherms vary their body temperature directly with environmental temperature

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False Question 22: Generalized global air circulation and precipitation patterns are caused by

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rising, warm, moist air masses cool and release precipitation as they rise and then at high altitude, cool and sink back to the surface as dry air masses after moving north or south of the tropics.Question 23: Which of the following is the correct equation used to understand the components of heat gain and loss which regulate body temperature?

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Hs=Hm±Hcd±Hcv±Hr-He Question 24: True or False: Convection is the transfer of heat by the movement of air or liquid past a surface, as when a breeze contributes to heat loss from a lizard's dry skin, or blood moved heat from the body core to the extremities.

Answer:

True