Unit 2: Evolution - SBI3U Exam Prep
Question and answers already passed
2025
Extinct - correct answer a species that has completely disappeared from
Earth
Adaptation - correct answer a structure, behaviors, or physiological process
that helps an organism survive and reproduce in a particular environment
Mimicry - correct answer a structural adaptation in which a harmless species
resemble a harmful species in coloration or structure
Variation - correct answer differences between individuals, which may be
structural, functional, or physiological (7.1)
Mutation - correct answer a permanent change in the genetic material of an
organism.
effect: changes allele frequencies
Selective Advantage - correct answer a genetic advantage that improves an
organism's chance of survival, usually in a changing environment
Paleontology - correct answer the study of ancient life through the
examination of fossils (8.1)
, Catastrophism - correct answer catastrophes (floods, diseases and droughts)
destroy species in a particular region allowing species from regions nearby to
repopulate that area (8.1)
Natural Selection - correct answer The idea that organisms that are the most
fit will live to reproduce offspring that are fit to continue survival of the species
effect: over many generations, frequencies of alleles of many different genes
may change, resulting in significant changes in the characteristics of a
population
Evolution - correct answer the process of genetic change in a population over
time due to interaction with biotic and abiotic environmental factors (8.1)
Survival of the fittest - correct answer a phrase coined by John Spencer,
expressing the idea that in the struggle for survival, the reproductively fittest
organisms win because they are better adapted to their environment (8.1)
Embryology - correct answer the study of early, pre-birth stage of
development (3.1)
Selective Pressure - correct answer environmental conditions that select for
certain characteristics of individuals and select against other characteristics
(7.2)
Fitness - correct answer the relative contribution an individual makes to the
gene pool of the next generation by producing offspring that will survive long
enough to reproduce (7.2)
Artificial Selection - correct answer selective pressure exerted by humans on
populations in order to improve or modify particular desirable traits (7.2)
Question and answers already passed
2025
Extinct - correct answer a species that has completely disappeared from
Earth
Adaptation - correct answer a structure, behaviors, or physiological process
that helps an organism survive and reproduce in a particular environment
Mimicry - correct answer a structural adaptation in which a harmless species
resemble a harmful species in coloration or structure
Variation - correct answer differences between individuals, which may be
structural, functional, or physiological (7.1)
Mutation - correct answer a permanent change in the genetic material of an
organism.
effect: changes allele frequencies
Selective Advantage - correct answer a genetic advantage that improves an
organism's chance of survival, usually in a changing environment
Paleontology - correct answer the study of ancient life through the
examination of fossils (8.1)
, Catastrophism - correct answer catastrophes (floods, diseases and droughts)
destroy species in a particular region allowing species from regions nearby to
repopulate that area (8.1)
Natural Selection - correct answer The idea that organisms that are the most
fit will live to reproduce offspring that are fit to continue survival of the species
effect: over many generations, frequencies of alleles of many different genes
may change, resulting in significant changes in the characteristics of a
population
Evolution - correct answer the process of genetic change in a population over
time due to interaction with biotic and abiotic environmental factors (8.1)
Survival of the fittest - correct answer a phrase coined by John Spencer,
expressing the idea that in the struggle for survival, the reproductively fittest
organisms win because they are better adapted to their environment (8.1)
Embryology - correct answer the study of early, pre-birth stage of
development (3.1)
Selective Pressure - correct answer environmental conditions that select for
certain characteristics of individuals and select against other characteristics
(7.2)
Fitness - correct answer the relative contribution an individual makes to the
gene pool of the next generation by producing offspring that will survive long
enough to reproduce (7.2)
Artificial Selection - correct answer selective pressure exerted by humans on
populations in order to improve or modify particular desirable traits (7.2)
