SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
PCAT Biology Evolution
Start Test
Study First
Subjects
:
pcat
,
biology
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. When groups within the branches develop in similar ways when exposed to similar environments -ex: fish and dolphins
Convergent Evolution
Evidence of Organic Synthesis
Geographic Barriers
Speciation
2. Form in hollow spaces of rocks - as the organisms within decay
Adaptive Radiation
Lamarckian Evolution
Archaepteryx
Molds
3. Mates are not randoomly chosen but rather selected according to criteria such as phenotype and proximity - the relative genotype ratios will be affected and will depart from the predictions of the Hardy-Weinberg equilibrium
Assortive Mating (Microevolution)
Evolution of New Species
Imprints
Gene Frequency
4. First forms of life lacked the ability to synthesize their own nutrients; they required performed molecules which made them heterotrophs -energy was present in the form of heat - electricity - solar radiation - including x rays and ultraviolet light
Heterotroph Hypothesis
Population
Hardy-Weinberg conditions
Microevolution
5. The closer the organisms in the evolutionary scheme - the greater the similarity of their chemical constituents
Geographic Barriers
Genetic Information
Fossils
Branching Evolutionary Tree
6. P^2+2pq+q^2=1 -p^2=frequency of TT (dominant homozygotes) -2pq=frequency of Tt (heterozygotes) -q^2=frequency of tt (recessive homozygotes)
Hardy-Weinberg Equation
Assortive Mating (Microevolution)
Development of Autotrophs
Overpopulation
7. Formed by minerals deposited in molds
Comparative Biochemistry (Physiology)
Heterotroph Hypothesis
Casts
Development of Autotrophs
8. Small local population -closely related genetically since mating between members of the same occurs more frequently =influenced by similar environmental factors and thus are subject to the same selection processes
Adaptive Radiation
Natural Selection
Deme
Formation of Primitive Cells
9. The decimal fraction representing the presence of an allele for all members of a population that have this particular gene locus
Vestigial Structures
Population
Gene Frequency
Genetic Information
10. Developing population must compete for the necessities of life. many young must die - and the number of adults in the population generally remains constant from generation to generation
Isolation
Evolution of New Species
Eohippus
Competition (struggle for survival)
11. Pressures in the environment select for the organism most fit to survive and reproduce -concluded that a member of a particular species that is equipped with beneficial traits - allowing it to cope effectively with the immediate environment - will pr
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
12. Real populations have unstable gene pools and migrating populations -agents of this change are natural selection - mutation - assortive mating -genetic drift - and gene flow
Microevolution
Woolly Mammoth
Analogous Structures
Genetic Information
13. More offspring are produced than can survive
Overpopulation
Genetic Drift (Microevolution)
Dinosaurs
Gene Pool
14. Organisms in a species have variations that give them an advantage over other members of the species -organisms may have adaptations that are advantageous for survival
Overpopulation
Darwin's Theory of Natural Selection
Natural Selection
Molds
15. Primitive horse the size of a fox with four toes and short teeth with pointed cusps for feeding on soft leaves
Evidence of Organic Synthesis
Adaptive Radiation
Competition (struggle for survival)
Eohippus
16. Impressions left by an organism ex: footprints
Imprints
Development of Autotrophs
Natural Selection
Evolution of New Species
17. Appear to be useless but apparently had some ancestral functions
Vestigial Structures
Heterotroph Hypothesis
Phylogeny
Assortive Mating (Microevolution)
18. Populations will become sufficiently different from each other to be able to reproduce
Reproductively Isolated
Competition (struggle for survival)
Development of New Species
Hardy-Weinberg Equation
19. When the gene frequencies of a population are not changing - the gene pool is stable - and population is not evolving
Hardy-Weinberg Principle
Deme
Overpopulation
Casts
20. Species multiplication is generally accompanied by migration to lessen intraspecific competition
Imprints
Hardy-Weinberg Equation
Evolution
Geographic Barriers
21. Migration of individuals between populations that will result in a loss or gain of genes - thus changing the composition of a population's gene pool
Coacervate Droplets
Comparative Biochemistry (Physiology)
Gene Flow
Overpopulation
22. Population is very large -no mutations affect the gene pool -mating between individuals in the population is random -there is no net migration of individuals into or out of the populations -genes in the population are all equally successful at reprod
Archaepteryx
Hardy-Weinberg conditions
Geographic Barriers
Comparative Biochemistry (Physiology)
23. Common ancestor is found at the trunk and the modern species at the tips of the branches
Genetic Drift (Microevolution)
Branching Evolutionary Tree
Evidence of Organic Synthesis
Dinosaurs
24. The sum total of all the alleles for any given trait in the population
Gene Pool
Trilobite
Gene Flow
Genetic Information
25. Change allele frequencies in a population - shifting gene equilibria -can either be favorable or detrimental for the offspring
Comparative Embryology
Genetic Information
Mutation (Microevolution)
Actual Remains
26. Hairy elephant found in the Siberian ice
Assortive Mating (Microevolution)
Inheritance of the Variations
Woolly Mammoth
Genetic Information
27. Stages of development of the embryo resemble the stages in an organism's evolutionary history
Population
Hardy-Weinberg Principle
Comparative Embryology
Development of Autotrophs
28. Offspring naturally show differences in their characteristics compared to their parents
Petrification
Analogous Structures
Variations
Darwin's Theory of Natural Selection
29. Primitive crustacean (relative to the lobster) - which was dominant form of the early Paleozoic era
Competition (struggle for survival)
Amber
Trilobite
Evolution
30. Ancient animals similar to both reptiles and birds and dominant in the Mesozoic era
Comparative Biochemistry (Physiology)
Dinosaurs
Eohippus
Modern Genetics
31. Results from the geographic isolation of a population
Reproductively Isolated
Heterotroph Hypothesis
Isolation
Casts
32. Only changes in the DNA of the sex cells can be inherited -changes acquired during an individual's life are changes in the characteristics and organization of somatic cells
Variations
Adaptive Radiation
Imprints
Modern Genetics
33. If gene pools within a species become sufficiently different so that two individuals can't mate and produce fertile offspring - two different species have developed
Fossils
Natural Selection
Development of New Species
Woolly Mammoth
34. Stanley L. Miller demonstrated the application of UV rays - heat or a combination of these to a mixture of methane - hydrogen - ammonia - and water could result in the formation of complex molecules -after circulation of the gases for one week - he a
Evidence of Organic Synthesis
Petrification
Gene Flow
Natural Selection (Microevolution)
35. Missing link between reptiles (has teeth and scales) and birds (also has feathers)
Evolution of New Species
Amber
Archaepteryx
Hardy-Weinberg Principle
36. Fossil resin of trees
Speciation
Amber
Assortive Mating (Microevolution)
Genetic Information
37. Refers to changes in the composition of the gene pool due to chance -tend to be more pronounced in small populations - where it is sometimes called the founder effect
Assortive Mating (Microevolution)
Genetic Drift (Microevolution)
Hardy-Weinberg Principle
Actual Remains
38. Individuals that survive (those with favorable variations) live to adulthood - reproduce their own kind - and thus transmit these favorable variations or adaptations to their offspring
Gene Frequency
Inheritance of the Variations
Formation of Primitive Cells
Eohippus
39. A cluster of colloidal molecules surrounded by a shell of water -tend to absorb and incorporate substances from the surrounding environment
Archaepteryx
Actual Remains
Overpopulation
Coacervate Droplets
40. The emergence of a number of lineages from a single ancestral species -may diverge into a number of distinct species; the differences between them are those adaptive to a distinct lifestyle - or niche
Adaptive Radiation
Geographic Barriers
Heterotroph Hypothesis
Microevolution
41. Most organisms demonstrate the same basic needs and metabolic processes -require the same nutrients and contain similar cellular organelles and energy storage forms
Gene Pool
Hardy-Weinberg Principle
Comparative Biochemistry (Physiology)
Deme
42. All members of a particular species inhabiting a given locations
Adaptive Radiation
Population
Genetic Information
Evolution
43. Evolutionary history and can be viewed asa branching tree
Comparative Embryology
Fossils
Phylogeny
Lamarckian Evolution
44. Over many generations of natural selection - the favorable changes eventually results in such significant changes of the gene pool that we can say a new species has evolved
Evolution of New Species
Darwin's Theory of Natural Selection
Hardy-Weinberg Equation
Casts
45. Same basic anatomical features and evolutionary origins -demonstrate similar evolutionary patterns with late divergence of form due to differences in exposure to evolutioinary forces
Archaepteryx
Genetic Information
Homologous Structures
Development of Autotrophs
46. Dissimilar species ahve been found to have evolved from a common ancestor
Modern Genetics
Hardy-Weinberg Principle
Evolutionary History
Branching Evolutionary Tree
47. Genotypes with favorable variations are selected thorugh natural selection - and the frequency of favorable genes increases with the genepool. genotypes with low adaptive values tend to disappear
Natural Selection (Microevolution)
Evidence of Organic Synthesis
Natural Selection
Vestigial Structures
48. Preserved in asphalt tar pits
Population
Comparative Biochemistry (Physiology)
Convergent Evolution
Saber-Tooth Tigers
49. Incude teeth - bones - etc. rock - tar pits - ice - and amber
Branching Evolutionary Tree
Comparative Embryology
Actual Remains
Speciation
50. The process in which minerals replace the cells of an organism
Saber-Tooth Tigers
Imprints
Petrification
Adaptive Radiation