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51 Cards in this Set
- Front
- Back
__________ occurs when a plant wilts, and cannot recover when placed in a saturated atmosphere |
permanent wilting point |
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More than 90% of a living plant is composed of which elements? |
carbon, hydrogen, and oxygen |
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Which of the following statements is NOT true for hydroponic growing systems? |
Nutrient film technique grows plants on a large tank on a thin, porous film |
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The force of attraction between two like molecules (such as water and water) is called: |
cohesion |
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The loss of water through special openings (not stomata) in the leaves is called: |
guttation |
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__________ is the amount of water the soil can hold against the force of gravity. |
field capacity |
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A vertical section of soil extending through all its horizons from the surface to the parent material is known as: |
a soil profile |
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When the south pole is titled toward the sun and the sun rays hit the tropic of a capricorn at a 90 degree angle: |
winter solstice |
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The two largest terrestrial biomes in the world are: |
Coniferous forest and tundra |
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This biome supports a low number of plant species, receives little rain, and plants have shallow root zones due to permafrost and wet soil. |
arctic tundra |
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A rain shadow is what area? |
The side of a mountain range and beyond dominated by dry air masses |
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This biome is found on five continents with plants that look similar but are not related. |
deserts and xeric shrublands |
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Most of the temperate grasslands in the northern hemisphere have been converted to: |
Crop land for grains |
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This biome receives ample rainfall, has annual temperatures from 5C to 20C, and is home to spruce, fir, pine, hemlock and redwood. |
temperate coniferous forest |
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Population size is affected by: |
All affect population size |
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Wetlands are important ecosystems because they: |
Are all functions of wetlands |
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Which of these is NOT an example of mutualism: |
Epiphytes |
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Herbivory is a common example of: |
predation |
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Conservation Biology |
All are components of conservation biology |
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Nitrogen (N) is used by the plant as a component of: |
chlorophyll and nucleic acids |
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Top soil is found in the __________ horizon. |
A |
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The pressure flow hypothesis does NOT explain: |
How osmosis works |
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Active transport of molecules across membranes occurs through: |
proton pumps
|
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The correct order of wind systems between the equator and each pole is: |
Trade winds, Westerlies, Arctic winds |
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This biome is dominated by trees such as oak, elm, poplar, beech and maple and is desirable for human settlement and agricultural production. |
temperate broadleaf and mixed forest |
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When the north pole is tilted toward the sun and the sun rays hit the tropic of cancer at a 90 degree angle: |
summer solstice |
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How many systems or belts of surface winds in each hemisphere determine the patterns of precipitation and vegitation? |
3 |
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Climate in an area is primarily dependent on: |
Amount of sunlight |
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Ecological succession occurs in: |
all ecosystems |
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Weltands are found in: |
all are places where wetlands occur |
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Ecologists characterize species richness by the r/K selection theory. Which is NOT a trait of K selected populations? |
Reproduce rapidly and early |
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Chlorosis is __________ of the leaves. |
yellowing |
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The pressure flow hypothesis does NOT explain: |
How osmosis works |
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Which of the following is NOT a mechanism of ion exclusion from plant cells? |
Nucleic acid movement of toxins out of the cell |
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Which of the following applies to soil horizons? |
They differ in chemical, physical, and biological properties and depth. |
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The cohesion theory states |
Water moves from the roots into the leaves due to negative pressure from transpiration |
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Weather patterns are affected by: |
All affect the weather pattern |
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Atmospheric conditions experienced at a particular time: |
weather |
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This biome is home to the greatest number of plant and animal species |
tropical rainforest |
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Population ecology studies: |
The age and geographical distribution of a population of individuals of the same species |
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Myrmecophytes are: |
An example of mutualism between a plant and ants |
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The carrying capacity of an environment changes with: |
The amount of resources available |
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What is the LEAST LIKELY cause for habitat fragmentation? |
cooling ocean temperatures |
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__________ is a nitrogen-fixing bacteria that forms a symbiotic relationship with legumes. |
Rhizobium |
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Water will move into a cell when |
The surrounding solution has a lower solute potential (hypotonic-solution) |
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What is NOT true for Potassium (K): |
it is often a limiting nutrient |
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The prevailing atmospheric conditions of an area over a long period of time. |
climate |
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Global warming is changing the geographic distribution of biomes. Which of the following statements is NOT a likely result of global warming? |
Trees will grow in Antarctica |
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Most of the temperate grasslands in the northern hemisphere have been converted to: |
Crop land for grains |
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The discipline of ecology studies: |
How organisms interact with each other and their environment |
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Which of the following statements about succession is NOT true? |
Succession is affected only by biotic factors |