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Systematics MCQ

Systematics

1. The scientific name of an organism (critter) refers to it's _ and .

Species; Genus

Unique

Genus

Family

Phylum

Answer

Correct Answer: Species; Genus

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2. In mammals, the presence of four limbs is , and hair is .

A shared derived character; a shared ancestral character that places mammals in the tetrapod clade

A shared ancestral character; a shared derived character unique to mammals

A homologous feature; an analogous feature

Monophyletic; parsimonious

Answer

Correct Answer: A shared ancestral character; a shared derived character unique to mammals

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3. If organisms are of the same species, _____.

They can interbreed

They share genetic similarities

They are the same color

They fall under the same genus

All of the above

Answer

Correct Answer: All of the above

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4. According to the phylogenetic tree in the figure above, g. intestinalis constitutes a _____ group.

Paraphyletic

Monophyletic

Polyphyletic

None of these

Answer

Correct Answer: Paraphyletic

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5. Prokaryotic cells are found in the domain(s) _____.

Bacteria and Archaea

Whether its nucleic acid is DNA or RNA

The proteins in the host's cytoplasm

The proteins on its surface and that of the host

Answer

Correct Answer: Bacteria and Archaea

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6. An example of parallel choices in a key is _____.

Flower color is red; AA. flower color is blue

Object can fly; AA. object is black

Animal has 4 legs; AA. animal has 4 teeth

Answer

Correct Answer: Flower color is red; AA. flower color is blue

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7. A derived character that is shared among two or more lineages is also called a(n) ________.

Apomorphy.

Plesiomorphy.

Synapomorphy.

Clade

Answer

Correct Answer: Synapomorphy.

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8. A(n) _______ is one that is present in the common ancestor and all members of a group.

Ancestral character

Clade

Character trait

Derived character

Analogous structure

Answer

Correct Answer: Ancestral character

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9. Molecular clocks are based on the idea that _____

Molecules resonate at a certain frequency that can be measured

Advantageous mutations arise at a constant rate.

Directional selection occurs at a constant rate.

Mutations occur once every generation.

On average neutral mutations arise at a constant rate

Answer

Correct Answer: Molecules resonate at a certain frequency that can be measured

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10. Taxonomy is the ______

Study of cells

Naming and classifying of species

Study of organisms and their interaction with the environment

Study of genes

Answer

Correct Answer: Naming and classifying of species

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11. In the five-kingdom system, prokaryotes are placed in the kingdom _____.

Protista

Animalia

Fungi

Plantae

Monera

Answer

Correct Answer: Monera

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12. The best classification system is that which most closely _____.

Conforms to traditional, Linnaean taxonomic practices

Reflects evolutionary history

Reflects the basic separation of prokaryotes from eukaryotes

Unites organisms that possess similar morphologies

Answer

Correct Answer: Reflects evolutionary history

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13. To apply parsimony to constructing a phylogenetic tree, __________.

Choose the tree that assumes all evolutionary changes are equally probable.

Choose the tree in which the branch points are based on as many shared derived characters as possible.

Base phylogenetic trees only on the fossil record, as this provides the simplest explanation for evolution.

Choose the tree that represents the fewest evolutionary changes, either in DNA sequences or morphology.

Choose the tree with the fewest branch points

Answer

Correct Answer: Choose the tree that represents the fewest evolutionary changes, either in DNA sequences or morphology.

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14. The language used in taxonomy is _____.

Latin

Dichotomy

Linnaeus

Morphology

Answer

Correct Answer: Latin

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15. Feathers are an example of a/an ; they originally evolved

Exaptation . . . for some other function

Exaptio.... became adapted for fligh..

Systematics

None

Answer

Correct Answer: Exaptation . . . for some other function

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16. The legless condition that is observed in several groups of extant reptiles is the result of _____.

Their common ancestor having been legless.

A shared adaptation to an arboreal (living in trees) lifestyle.

Several instances of the legless condition arising independently of each other.

Individual lizards adapting to a fossorial (living in burrows) lifestyle during their lifetimes

Answer

Correct Answer: Several instances of the legless condition arising independently of each other.

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17. The process of protein synthesis (translation) does not include ________.

Mutation

Transcription

Replication

Translation

Mitosis

Answer

Correct Answer: Translation

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18. Phylogenetic analysis of hiv and nonhuman siv demonstrates that hiv is _ and siv is _.

Polyphyletic; paraphyletic

Polyphyletic; monophyletic

Paraphyletic; monophyletic

Monophyletic; monophyletic

Monophyletic; paraphyletic

Answer

Correct Answer: Polyphyletic; paraphyletic

Note: This Question is unanswered, help us to find answer for this one

19. In a comparison of birds and mammals, having four limbs is _____.

A shared ancestral character

A shared derived character

A character useful for distinguishing birds from mammals

An example of analogy rather than homology

Answer

Correct Answer: A shared ancestral character

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20. Animals that possess homologous structures probably _____

Have increased genetic diversity

Evolved from the same ancestor

Are not related

Are the result of convergent evolution

Are the result of similar environmental pressures in different evolutionary lineages

Answer

Correct Answer: Evolved from the same ancestor

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21. A human is classified in domain _ and kingdom _

Eukarya ... Fungi

Eukarya ... Protista

Eukarya ... Plantae

Eukarya ... Animalia

Bacteria ... Archaea

Answer

Correct Answer: Eukarya ... Animalia

Note: This Question is unanswered, help us to find answer for this one

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General Biology MCQs

Systematics MCQ

1. The scientific name of an organism (critter) refers to it's _____________ and ____________.

2. In mammals, the presence of four limbs is ________, and hair is ________.

3. If organisms are of the same species, _____.

4. According to the phylogenetic tree in the figure above, g. intestinalis constitutes a _____ group.

5. Prokaryotic cells are found in the domain(s) _____.

6. An example of parallel choices in a key is _____.

7. A derived character that is shared among two or more lineages is also called a(n) ________.

8. A(n) _______ is one that is present in the common ancestor and all members of a group.

9. Molecular clocks are based on the idea that _____

10. Taxonomy is the ______

11. In the five-kingdom system, prokaryotes are placed in the kingdom _____.

12. The best classification system is that which most closely _____.

13. To apply parsimony to constructing a phylogenetic tree, __________.

14. The language used in taxonomy is _____.

15. Feathers are an example of a/an ________; they originally evolved ________

16. The legless condition that is observed in several groups of extant reptiles is the result of _____.

17. The process of protein synthesis (translation) does not include ________.

18. Phylogenetic analysis of hiv and nonhuman siv demonstrates that hiv is _______ and siv is _______.

19. In a comparison of birds and mammals, having four limbs is _____.

20. Animals that possess homologous structures probably _____

21. A human is classified in domain _____ and kingdom _____

1. The scientific name of an organism (critter) refers to it's _ and .

2. In mammals, the presence of four limbs is , and hair is .

15. Feathers are an example of a/an ; they originally evolved

18. Phylogenetic analysis of hiv and nonhuman siv demonstrates that hiv is _ and siv is _.

21. A human is classified in domain _ and kingdom _