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Test your basic knowledge |
CLEP Biology: Principles Of Evolution
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Study First
Subjects
:
clep
,
science
,
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. Most anthropologists agree that the ______ _______ was populated by a series of three migrations over the temporary land connection between Asia and North America.
New World
Natural selection
Interbreed
Cold
2. At some time in their life cycle - chordates have a pair of lateral gill slits or pouches used to obtain __________ in a liquid environment.
Evolved
Marsupial. All the marsupials in present day Australia would have evolved from one common ancestor. Kangaroos
Oxygen
Fungi
3. In a genetic drift the entire population may become homozygous for the allele or - equally likely - the allele may disappear. Before either of these fates occurs - the allele represents a Polymorphism. This is a case of polymorphism through...
Evolved
Genetic drift
Natural selection
Marsupial. All the marsupials in present day Australia would have evolved from one common ancestor. Kangaroos
4. Linnaeus placed all monkeys and apes along with humans into the order _________
Homo
Kingdom
Primates
DNA
5. _______________ is that branch of biology dealing with the identification and naming of organisms.
Taxonomy
Environmental
Africa
Binomial
6. Homology is also seen in the structure of eye - brain - joint appendages of arthropods - etc. It is thus evidence for ____________.
Homologous
Evolution
Hardy-Weinberg
Homo
7. In the 1680s Ariaantje and Gerrit Jansz emigrated from Holland to South Africa - one of them bringing along an allele for the mild metabolic disease porphyria. Today more than 30000 South Africans carry this allele and - in every case examined - can
Founder.
New World
Sexually
Adaptive radiation
8. Despite their image as brutish simpletons - _____________were the first humans to bury their dead with artifacts - indicating abstract thought - perhaps a belief in an after-life.
Adaptive radiation
Genetic drift
Sexually
Neanderthals
9. When Charles Darwin was in the Galapagos islands - one of the first things he noticed is the variety of ___________ that existed on each of the islands.
Increase
Finches
Function
Balanced
10. According to Darwin - in spite of the high reproductive potential - the number of individuals in a species remains relatively constant - suggesting _____________ for existence.
Species
Intraspecific
Adaptive radiation
Struggle
11. Almost all living organisms use the same basic biochemical molecules - including DNA - ATP - and many identical or nearly identical enzymes. Organisms utilize the same DNA triplet base _________ and the same 20 amino acids in their proteins
Cold
Homology
Biodiversity
Code
12. ____________ reproduction - whether reproduction proceeds with lesser or greater success - is central to the process of natural selection; it determines whether a given mutation becomes established in the general population.
Binomial
Increase
Comparative anatomy.
Differential
13. The study of ____________ ____________ supports the claim of a common origin of organisms.
New World
Comparative anatomy.
Struggle
DNA
14. A ____________ tree is a graphical means to depict the evolutionary relationships of a group of organisms.
Phylogenetic
Taxonomy
Fossils. A study of the fossil record helps to build a historical sequence of biological evolution of complex organisms from simple ancestors.
Sexually
15. Except for the tail fins - whales greatly resemble fish in outline - but are instead descended from four-legged land ___________.
Mammals.
Mass
Somatic
Binomial
16. Mammals developed from primitive mammal-like reptiles during the __________ Period - some 200-245 million years ago.
Convergent
Triassic
Sympatric
Phylum
17. A ___________ can be defined as one or more populations of interbreeding organisms that are reproductively isolated in nature from all other organisms.
Code
Biodiversity
Species
Natural selection
18. At the molecular level - life's ability to reproduce begins with the replication of ____________ - during which two new spirals are created that are exact replicas of the original molecule.
DNA
Homologous
Change
Baseline
19. _____________ is the accumulation of small changes in a gene pool over a relatively short period.
Microevolution
Allele
Genus
Increase
20. ______________ struggle is the struggle of organisms against the physical environment.
Analogy
Homo
Environmental
Intraspecific
21. Scientific classification sorts living organisms by _________ levels of classification - kingdom; phylum; class; order; family; genus; and species.
Biodiversity
Increase
Seven
Natural selection
22. _________ evidence shows that the horse has undergone considerable evolutionary change over a period of 60 million years.
Sickle Cell
Kingdom
Microevolution
Fossil
23. The highest category in the Linnaean system of classification is the __________. At this level - organisms are distinguished on the basis of cellular organization and methods of nutrition.
Evolved
Struggle
Kingdom
Fungi
24. The _______-_________ Law states that an equilibrium of allele frequencies in a gene pool remains in effect in each succeeding generation of a sexually reproducing population if five conditions are met.
Protoplasm
Fungi
Hardy-Weinberg
Mass
25. There are certain animals with intermediate characters between two major groups of animals. They are called ___________ _____.
Interspecific
Connecting links
Change
Triassic
26. About 2 million years ago - two groups developed: the australopithecines - generally smaller brained and not users of tools; and the line that led to genus _________ - larger brained and makers and users of tools.
Fungi
Homo
Protista
Phylogenetic
27. The ______-____-______ Hypothesis proposes that some Homo erectus remained in Africa and continued to evolve into Homo sapiens - and left Africa about 100 -000-200 -000 years ago. From a single source - Homo sapiens replaced all populations of Homo e
Mimicry
Environmental
Out-of-Africa
Chordata
28. ___________ evolution is an evolutionary process in which organisms not closely related independently acquire some characteristic or characteristics in common.
Seven
Kingdom
Convergent
Macroscopic.
29. Speciation by ____________ Equilibrium involves a group of creatures which gets isolated from the rest of their species.
Homo erectus
Marsupial. All the marsupials in present day Australia would have evolved from one common ancestor. Kangaroos
Evolution
Punctuated
30. The early stages of development of the ___________ of fish - salamander - tortoise - hen and man show remarkable similarity.
Biodiversity
Triassic
Beneficial
Embryos
31. The mutation may be harmful (resulting in a reduced probability of survival for the organism involved) - ____________ (it might also do its intended job better) or merely neutral (no effect at all).
Evolved
Genetic
Baseline
Beneficial
32. Charles Darwin published a book The Origin of Species in the year 1859. He proposed that the new species came about by a process called ___________ __________.
Natural selection
Polymorphism
Seven
DNA
33. The ____________ mammals occupy Australia - and differ from placental mammals because they bear their young inside a pouch (instead of a placenta).
Phylogenetic
Continuity
Marsupial. All the marsupials in present day Australia would have evolved from one common ancestor. Kangaroos
33 phyla
34. An allele may increase - or decrease - in frequency simply through ___________. Not every member of the population will become a parent and not every set of parents will produce the same number of offspring.
Homologous
Binomial
Chance
Mollusca
35. Animals and plants show variations in physical structure. Some of these variations are simply caused by external conditions (environmental) - such as accidents - temperature - food abundance - etc.. ___________ variations have no effect on evolution
33 phyla
Fossil
Mass
Somatic
36. Extinctions - mostly at the level of species - have been occurring constantly at a low 'background rate' - usually matched by the rate at which new species appear - with the result that ____________ is constantly increasing.
Punctuated
Biodiversity
Monera
Primates
37. There are at least ___________ of animals. Humans are members of the phylum Chordata.
33 phyla
Finches
Founder.
Interspecific
38. Homology has to be distinguished from ___________; for instance - the wings of insects and the wings of birds are analogous but not homologous.
Environment
Analogy
Protista
Connecting links
39. The only kingdom which consists of prokaryotes is the __________ kingdom.
Homologous
Cold
Monera
Bipedal
40. Organisms struggle for existence. Organisms with advantageous characters survive - while those which lack such variations perish. The advantageous characters are passed on to the offsprings generation after generation and the organisms become better
Change
Natural selection
Code
Macroscopic.
41. Differential reproduction allows one species to gradually evolve into a new species. This is the process of ____________.
Triassic
Evolution
Protoplasm
Genetic
42. All organisms are placed into one of five kingdoms: Monera - Protista - ________ - Plantae - Animalia.
Struggle
Connecting links
Fungi
Monera
43. A comparative study of physiology and biochemistry also supports the common origin for different organisms. The _____________ of all organisms cells is more or less same in composition.
Interbreed
Protoplasm
Mollusca
Macroscopic.
44. As the finch population began to flourish in these advantageous conditions - ______________ competition became a factor - and resources on the islands were squeezed and could not sustain the population of the finches for long.
Intraspecific
Fire
Mimicry
Differential
45. An important step toward the modern theory of evolution came in the 1760's - when Count George-Louis Leclerc de Buffon (1707-1788) published his Natural History of Animals with the idea that species __________ over time.
Code
DNA
Change
Biodiversity
46. Heritable variations are called _____________ variations. Such variations arising from changes in DNA are passed on within families and to the offspring from the parents.
Homo erectus
Genetic
Hardy-Weinberg
Macroscopic.
47. _____________ is the end of a particular evolutionary line - the end of a species - a family - or a larger group of organisms.
Extinction
Fungi
Balanced
Creationism
48. _____________ struggle takes place between the individuals of the same species.
Mimicry
Intraspecific
Homology
Convergent
49. _____________ can occur randomly - from radiation damage (impact with high energy g-rays or cosmic rays) - from exposure to chemical agents called mutagens - or simply by error in the DNA replication process.
Mutations
Beneficial
Continuity
Natural selection
50. _____________ struggle takes place between the individuals of different species.
Evolved
Interbreed
Hardy-Weinberg
Interspecific