Classification: Question Preview (ID: 19448)

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Escherichia coli is the scientific name of a bacterium. What category of classification is Escherichia?
a) Order
b) Genus
c) Phylum
d) Species

According to the biological definition of a species, which organisms listed below would belong to the same species?
a) Animals that can breed and produce fertile offspring
b) Mushrooms that are the same color and can grow on trees
c) Plants that have flowers with the same structures that attract the same pollinators
d) Protists that are the same shape and have the same structures for movement

One method of determining the classification of an animal is by comparing the amino acid sequence. Which of these animals most closely resembles this unknown animal? Met-Gly-Ser-Tyr-Tyr-Arg-His-His-Glu-Lys-Asp
a) Horse: Met-Gly-Ser-Ser-Tyr-Arg-Arg- Asp-His-Glu-Lys-Asp
b) Mouse: Met-Gly-Ser-Tyr-Tyr-Arg-His- Glu-Val-Val-Leu
c) Dog: Met-Gly-Ser-Tyr-Tyr-Arg-His-Asp- Glu-Lys-Asp
d) Cat: Met-Gly-Ser-Tyr-Tyr-Arg-His-His- Arg-Cys-Thre-Asp

During a trip to a rain forest, a scientist discovered a new organism living near some rotting logs. The scientist observed that the organism had moist skin, no hair, and an internal skeleton and that it laid eggs. This organism was probably a -
a) mammal
b) invertebrate
c) reptile
d) amphibian

Which of these organisms contains no specialized cells?
a) Sea anemone
b) Sponge
c) Jellyfish
d) Paramecium

Ascidians are sac-like marine organisms. Their larvae have well-developed brains and dorsal nerve cords. This suggests that ascidians should be classified with the —
a) annelids
b) sponges
c) cnidarians
d) chordates

An important feature of modern classification systems is that they —
a) apply only to organisms that are alive today
b) group organisms that live in the same habitat
c) can incorporate new scientific discoveries
d) can predict the discovery of new species

Bivalves, such as clams, are found in salt water. The clam captures food particles from water that flows over its gills. Which of these is the best classification of the clam?
a) A decomposer
b) A chunk feeder
c) A filter feeder
d) A grazer

A biologist has just discovered a new life form. The newly described organism is multicellular, does not carry on photosynthesis, and absorbs nutrients from the environment. It is composed of eukaryotic cells with cell walls. Which kingdom is best?
a) Bacteria
b) Plant
c) Fungi
d) Animal

What structure is common to all five kingdoms of living organisms?
a) Cell wall
b) DNA
c) Nucleus
d) Mitochondria

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