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Biology 101 Exam #1 (SDSU) Questions and Answers
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Biology 101 Exam #1 (SDSU) Questions and Answers
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Biology 101 Exam #1 (SDSU) Questionsand Answers
The ability of an individual to survive and reproduce in its environment relative to other
individuals is called its: - Answer-fitness
The specific study of multicellular and heterotrophic organisms that acquire nutrition
through ingestion is also know as: - Answer-Zoology
____recognized that heritable traits of an organism were passed from parent to
offspring on "genes" - Answer-Gregor Mendel
An adaptation is a feature that: - Answer-increases the chance that an individual will
reproduce
Certain species of land snail are found in isolated populations in high elevation habitats
on mountaintops. There are mountain ranges in which different mountaintops will have
different, but very closely related, species of snails. The snails cannot survive if they
travel to lower elevations--thus the snails cannot move to populations on other
mountains (i.e., the various species are both reproductively and geographically
isolated.) Evolutionary biologists studying these snails have argued that the different
species of snail arose through the process of: - Answer-allopatric speciation
The physical expression of an organism's genetic constitution is called its: - Answer-
phenotype (visible or expressed characteristics of an organism, influenced by the
genotype)
What does the theory of endosymbiosis explain? - Answer-Evolution of the eukaryotic
cell
Why is taxonomy, or the naming and organizing of organisms, important? - Answer-All
of the above.
Two different groups of organisms are termed sister taxa if: - Answer-they share
common ancestry with each other more recently than either one does with any other
organisms
A membrane-bound nucleus within the cell is a synapomorphy for the monophyletic
group called - Answer-Eukarya
Cilia, flagella, and pseudopods are structures found in some unicellular "protists" that: -
Answer-allow the organisms to move
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