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BIOL 301 Exam Questions with Correct Answers

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BIOL 301 Exam Questions with Correct Answers What is the most fundamental unit of ecology? - Ans:-individual What is the number of individuals per unit area? - Ans:-Density The paper you read entitled, "Effects of Predator Hunting Mode on Grassland Ecosystem Function" was an example of what ki...

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  • October 23, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • BIOL 301
  • BIOL 301
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GraceAmelia
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BIOL 301 Exam Questions with Correct
Answers


What is the most fundamental unit of ecology? - Ans:✔✔-individual


What is the number of individuals per unit area? - Ans:✔✔-Density


The paper you read entitled, "Effects of Predator Hunting Mode on Grassland Ecosystem Function" was

an example of what kind of study? - Ans:✔✔-ecosystem


When does a dynamic steady state occur? - Ans:✔✔-When gains and losses are in balance


Ecology - Ans:✔✔-scientific study of the abundance and distribution of organisms in relation to other

organisms and environmental conditions


Community - Ans:✔✔-populations of species living together in a particular area


Fitness - Ans:✔✔-survival and reproduction- greater fitness occurs when genes are likely to be passed to

the next generation and that phenotype will come to dominate


Sample - Ans:✔✔-subset of a population, used to draw inferences about the population




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Mesocosm - Ans:✔✔-a small outdoor experimental system that examines environmental conditions

under controlled conditions


Give an example of a phenotype - Ans:✔✔-color (of skin, hair)


There are 3 requirements for evolution to take place via natural selection. Please explain 1 of the 3

requirements - Ans:✔✔-traits must have variation-not everyone will have the same traits and their

possible advantages or disadvantages


Different organisms play diverse roles in ecological systems. Please pick an organisms and tell me what

role it plays. - Ans:✔✔-Plants- produce oxygen for all living things (other plants and animals) to survive


What voice and tense should you use when writing a scientific paper? - Ans:✔✔-both passive and active

voices


Please rewrite the following sentence to be in an active voice: "The study was conducted in a 1.5 ha

meadow at the Yale-Myers Research Forest in north-eastern Connecticut USA." - Ans:✔✔-We conducted

the study in a 1.5 ha meadow at the Yale-Myers Research Forest in north-eastern Connecticut USA.


When you develop an experimental design for your study you need to consider many different things.

What are 2 of the many different things you may need to consider and why should they be considered? -

Ans:✔✔-the method of collecting data because certain factors may influence or skew the results

differently leading to incorrect data. Also you need to consider how to statistically analyze the data




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because there are many different ways to and some may be the wrong approach to finding what exactly

your experiment is looking for-each give different results


Scavengers - Ans:✔✔-consume dead animals


Producers - Ans:✔✔-convert chemical energy into resources


Competition - Ans:✔✔-is when 2 organisms that depend on the same resource have a negative effect on

each other


Detritivores - Ans:✔✔-break down dead organic matter into smaller particles


Predation - Ans:✔✔-is when an organism kills and consumes an individual


Mixotrophs - Ans:✔✔-can switch between being producers and consumers


Which is NOT an adapatation that exploits the density of water?


a. a gas-filled swim bladder


b. droplets of water on algae


c. long, filamentous appendages


d. high percentages of fat - Ans:✔✔-c


At what temperature does water reach its maximum density? - Ans:✔✔-4 degrees celcius

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Aquatic organisms have developed streamlined shapes to adapt to what? - Ans:✔✔-the viscosity of

water


The use of salt on roads in winter has led to what? - Ans:✔✔-decreased survival of freshwater organisms

in nearby ponds


Mangroves grow on salt-laden coastal mudflats that an inundated daily by high tides. How do these

plants address problems of water acquisition and elimination of excess salts?


I. by maintaining high concentrations of organic solutes in their roots


II. by excluding salts from their roots by active transport


III. by actively excreting salt from glands on the surfaces of their leaves - Ans:✔✔-I, II, and III


The dissolved oxygen levels in water did NOT require adaptation for


a. dolphins


b. sharks


c. squid


d. zooplankton - Ans:✔✔-a


What is used to increase oxygen extraction? - Ans:✔✔-countercurrent circulation



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