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BIO 182 EXAM 1 CHAPTERS 45, 43, 44, 46, 47 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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BIO 182 EXAM 1 CHAPTERS 45, 43, 44, 46, 47 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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BIO 182 EXAM 1 CHAPTERS 45, 43, 44, 46,47 QUESTIONS AND ANSWERS WITH
SOLUTIONS 2024
CHAPTER 45 - ANSWER
At what levels of life are focused on while studying ecology? - ANSWER -organismal
-population
-community
-ecosystem
What is the difference between a biotic and abiotic factor in the environment? - ANSWER -Biotic
interactions are interactions among living things
-Abiotic interactions are between organisms and their nonliving environment
There are two major classes of aquatic biomes that are divided based on their salt content. What are
they? - ANSWER freshwater biome
-salt concentration of less than 1%
-lakes, streams, rivers, and wetlands
marine biome
-a salt concentration around 3%
-oceans, intertidal zones, coral reefs, and estuaries.
What % of earth does fresh water cover? - ANSWER less than 1%
Be able to understand and explain the benthic realm, photic zone, and aphotic zone as is occurs in lakes
and ponds. - ANSWER photic zone
-light is available for photosynthesis -shallow water near shore and
the upper layer of water away from shore.
,aphotic zone
-deeper and
has light levels too low to support photosynthesis.
benthic realm
-at the bottom of all aquatic biomes
Unlike lakes and ponds which are standing water, rivers and streams are flowing water. Be able to explain
some of the differences in properties that occur near the source of the stream vs. downstream. -
ANSWER Near the source of a stream, the water is usually
-clear, cold, swift, and low in nutrients.
Downstream, the water is usually
-murkier, warmer, slower, and higher in nutrients.
What is the open water part of the ocean called? - ANSWER pelagic realm
How deep is the photic zone in the ocean? - ANSWER 200 meters
Know the 9 major terrestrial biomes, and what the temperature and precipitation regime of each is. -
ANSWER Savannas
-dominated by grasses and scattered trees,
are warm year-round
-rainfall 12-20 inches per year with dramatic seasonal variation.
Deserts
-driest of all biomes,
-characterized by low and unpredictable rainfall of less than 12 inches a year, and
may be very hot or very cold.
, Chaparral
-climate results from cool ocean currents circulating offshore and producing
-mild, rainy winters
-hot, dry summers.
Temperate grasslands
-mostly treeless,
-10-30 inches of rain per year,
-experience frequent droughts and fires
Temperate broadleaf forest
-where there
is sufficient moisture to support the growth
of large trees
-30 to 60 inches of rainfall
Coniferous forests
-dominated by cone-bearing evergreen trees and
Tundra
-Arctic between the taiga and polar ice
-permafrost (permanently frozen subsoil),
-bitterly cold temperatures
-high winds.
Polar ice
-north of the arctic tundra in the Northern Hemisphere and
in Antarctica in the Southern Hemisphere.
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