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BIS 2B UC Davis Midterm 1 Questions and
Correct Answers/ Latest Update / Already
Graded
Ecology
Ans: the study of interactions among organisms and between
organisms and their environment.
Ecology's fundamental goal
Ans: To assess the biological and physical factors that
determine the distribution and abundance of spe cies.
Evolution
Ans: A change in the properties of populations of organisms
that transcend the lifetime of a single individual.
Species Richness
Ans: the number of species in a given area
Species Evenness
Ans: The degree to which species are equally abundant
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Species Diversity
Ans: A measure that combines both richness and evenness
Two types of species
Ans: Morphological and Biological
Morphological
Ans: Individuals are grouped into species based on their similar
appearance.
Pro: Practical and simple to apply, often reflects evolutionary
relationships.
Con: Genetic variation within populations, changing
morphology in response to environment (plasticity), some
species may look similar because they evolved those traits
independently.
Plasticity
Ans: Changing morphology in response to environment.
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Biological Species
Ans: Groups of actually or potentially interbreeding individuals
that are reproductively isolated from other such groups.
Pro: Clear biological and evolutionary meaning
Con: Difficult to apply in practice. Asexual don't interbreed,
reproductive barriers hard to recognize, potential inbreeding
doesn't mean actual interbreeding.
Climate average and annual variation in ______ and _______ in a given
region over the long-term.
Ans: Temperature and Precipitation
What determines Climate?
Ans: Incident solar radiation (season and latitude)
Air circulation driven by solar radiation and Earth's rotation.
Hadley Cells
All rights reserved © 2025/ 2026 |
BIS 2B UC Davis Midterm 1 Questions and
Correct Answers/ Latest Update / Already
Graded
Ecology
Ans: the study of interactions among organisms and between
organisms and their environment.
Ecology's fundamental goal
Ans: To assess the biological and physical factors that
determine the distribution and abundance of spe cies.
Evolution
Ans: A change in the properties of populations of organisms
that transcend the lifetime of a single individual.
Species Richness
Ans: the number of species in a given area
Species Evenness
Ans: The degree to which species are equally abundant
All rights reserved © 2025/ 2026 |
, Page |2
Species Diversity
Ans: A measure that combines both richness and evenness
Two types of species
Ans: Morphological and Biological
Morphological
Ans: Individuals are grouped into species based on their similar
appearance.
Pro: Practical and simple to apply, often reflects evolutionary
relationships.
Con: Genetic variation within populations, changing
morphology in response to environment (plasticity), some
species may look similar because they evolved those traits
independently.
Plasticity
Ans: Changing morphology in response to environment.
All rights reserved © 2025/ 2026 |
, Page |3
Biological Species
Ans: Groups of actually or potentially interbreeding individuals
that are reproductively isolated from other such groups.
Pro: Clear biological and evolutionary meaning
Con: Difficult to apply in practice. Asexual don't interbreed,
reproductive barriers hard to recognize, potential inbreeding
doesn't mean actual interbreeding.
Climate average and annual variation in ______ and _______ in a given
region over the long-term.
Ans: Temperature and Precipitation
What determines Climate?
Ans: Incident solar radiation (season and latitude)
Air circulation driven by solar radiation and Earth's rotation.
Hadley Cells
All rights reserved © 2025/ 2026 |
