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Ecology Exam 1
Exam 1 Dr. Matter
32
Biology
Undergraduate 2
04/09/2012

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Term

Who coined the term Ecology?

  1. Robert Ricklefs
  2. Paul Ehrlich
  3. Charles Darwin
  4. Jens Roland
  5. Ernst Haeckel
Definition
5. Ernst Haeckel
Term

Which of the following are placed in order of increasing ecological complexity?

  1. Community, ecosystem, population
  2. Population, community, individual
  3. Ecosystem, individual, population
  4. Individual, Community, Population
  5. Population, community, ecosystem
Definition
5. Population, Community, Ecosystem
Term

The survival of owverwintering eggs of the btterfly Parnassius smintheus is most dependent upon what property of water?

  1. High specific heat
  2. Cohesion
  3. Density
  4. pH
  5. Surface tension
Definition
1. High Specific Heat
Term

Which of the following is an abiotic component of an ecosystem?

  1. Mutualism
  2. Competition
  3. Heat
  4. Predation
  5. All of the above
Definition
3. Heat
Term

Breadly similar communities across the globe based on climate and dominant plant species are called ____?

  1. Lianas
  2. Ecotones
  3. Biomes
  4. Ecosystems
  5. Horizons
Definition
3. Biomes
Term

When compared with silty soils, coarse sandy soils hold _____ water.

  1. More
  2. Less
  3. Toxic
  4. Potable
  5. The same amount of
Definition
2. Less
Term

A plant that is growing under optimal conditions will allocate most of its growth (carbon) to which of the following structures?

  1. Root hairs
  2. Roots
  3. Stems
  4. Spodsosols
  5. Leaves
Definition
5. Leaves
Term

Global patterns of subtropical desert...

  1. result where warm air rises from the surface
  2. are prevalent along the equator
  3. result where cool air descends to the surface
  4. result where cool air rises from the surface
  5. none of the above
Definition
3. Result where cool air descends to the surface
Term

A plant grown under low water conditions would be expected to have which of the following adaptations?

  1. A greater leaf area than for the same plant grown under normal moisture.
  2. A greater number of stomata/leaf than for the same plant grown under normal moisture.
  3. Longer stems than plants grown under normal moisture
  4. A greater number of flowers/plant than for the same plant grown under normal moisture.
  5. Greater pubescence (trichomes/leaf) than for the same plant grown under normal moisture.
Definition
5. Greater pubescence (trichomes/leaf) than for the same plant grown under normal moisture.
Term

The similar growth forms and ecologies of species occurring in similar climates is due to...

  1. Invasive species
  2. Photorespiration
  3. Dispersal
  4. Convergent evolution
  5. Disruptive selection
Definition
4. Convergent Evolution
Term

All other things being equal, the metabolic rate of an ectotherm ___ with decreasing ambient temperature within its range of tolerance.

  1. will increase
  2. will decrease
  3. will stay constant
  4. will decrease then stay constant
  5. will decrease then increase
Definition
2. will decrease
Term

The metabolic rate per unit of body mass is lowest in a _____.

  1. Large ectotherm
  2. small ectotherm
  3. large endotherm
  4. small endotherm
  5. large poikilotherm
Definition
1. Large ectotherm
Term
Which is the best explanation why an ectothermic animal would do better than an endothermic animal in a low oxygen environment?
Definition
Endotherms have a higher metabolic demand than ectotherms and thus their need for oxygen is greater
Term
The primary drawback of the C3 photosynthetic pathway is that:
Definition
The enzyme responsible for carboxylation can also act as an oxygenase, causing photorespiration
Term

Carboxylation in photosynthesis of C4 plants is catalyzed by the enzyme:

  1. Chlorophyll A
  2. Rubisco
  3. Cytochrom oxidase I
  4. PEP carboxylase
  5. Phosphoglucoisomerase
Definition
4. PEP Carboxylase
Term

Photorespiration

  1. Occurs when plants close their stomata
  2. Occurs when CO2 concentrations are low
  3. Occurs when Rubisco catalyzes the incorporation of O2
  4. All of the above
  5. None of the above
Definition
4. All of the above
Term
Salt content of water strongly affects the distribution of many aquatic species. Salmon can exist in both fresh and saltwater at different times of their life. Which is a strategy salmon use in different environments?
Definition
Drinking saltwater and actively pumping excess salt from their blood when in saltwater
Term

Where would you be most likely to find a C4 plant?

  1. Freshwater
  2. Temperate rainforest
  3. Tropical rainforest
  4. Pine forest understory
  5. Temperate grassland/savanna
Definition
5. Temperate grassland/savanna
Term

A plant can decrease water potential and obtain water by:

  1. Pumping H+ ions into the soil
  2. Increasing the solute concentration in its roots
  3. Closing its stomata
  4. All of the above
  5. None of the above
Definition
1. Increasing the solute concentrations in its roots
Term
The melting of the Greenland ice sheet would have what impact?
Definition
A disruption of thermohaline circulation
Term

In the figure above for a C3 plant, at point E, what is the limiting factor for CO2 uptake?

  1. NH3+
  2. O2
  3. Light
  4. Water
  5. Rubisco
Definition
5. Rubisco
Term
The maximum gross rate of CO2 uptake via photosynthesis for this species is approximately..
Definition
19 umol/CO2/m^2/sec
Term
Which of the following are associated with an "El Nino" event?
Definition
Major changes in temperature and precipitation on a global scale
Term
Where would you expect to find organisms with adaptations to the warmest summers?
Definition
Term
Where would you expect to find the greatest number of C4 plants relative to C3 plants?
Definition
a habitat at 30° N on the east coast of a continent
Term
Based on the figure and season depicted above, radiant energy from the sun per unit area would be least at...
Definition
B
Term
During the season depicted in the figure above, rainfall would be highest at
Definition
A and B
Term
The global concentration of CO2 in the atmosphere has risen since the industrial revolution. Considering only the change in CO2 concentration. NOT any associated change in climate, which type of photosynthesis would be favored by increasing CO2 concentrations?
Definition
C3 would be favored over CAM
Term
Define Ecology
Definition
Science by which we study how organisms interact with and in the natural world
Term
Given what you know about the distribution of tree species, why do you think that this species doesn ot occur in Ohio?
Definition
They can't survive because of Ohio's changing weather. The trees need to grow in a habitat that stays warmer and more moist for the majority of the year
Term
Why do you think that this species range does not extend farther to the west?
Definition
Although there are warmer weather towards the west, the moisture in the air is different. Places like Texans and Arizona are too dry and too hot for the trees to survive.
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