Zoology 3

When did animals first originate?

• In the Precambrian seas over 600 million years ago

• During the Jurassic period

• 100 million years ago

• At the beginning of the Cambrian explosion

Tags

NGSS.MS-LS4-1

What is believed to be the ancestor of animals?

• A heterotrophic protist

• A photosynthetic plant

• A multicellular fungus

• A single-celled bacterium

Tags

NGSS.HS-LS4-1

What supports the one-ancestor theory of animals?

• Recent molecular genetics studies

• Fossil records exclusively

• Observations of animal behavior

• Theories of spontaneous generation

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-2

What is systematics?

• The genetic modification of organisms

• The science of describing relationships between organisms

• The study of animal behavior in natural habitats

• The classification of animals based on their diet

What does a cladogram represent?

• The geographical distribution of species

• Evolutionary relationships using shared derived characters

• The lifespan of different species

• The food chain of a particular ecosystem

Tags

NGSS.MS-LS4-2

What percentage of all animal species are invertebrates?

• 75%

• 60%

• 94%

• 82%

Which phylum do humans belong to?

• Phylum Mollusca

• Phylum Nematoda

• Phylum Arthropoda

• Phylum Chordata

Tags

NGSS.MS-LS4-2

What is the biological species concept?

• A collection of organisms with similar DNA sequences

• A group of organisms that share the same habitat

• A classification based solely on physical characteristics

• A group of actually or potentially interbreeding organisms that is reproductively isolated from other such groups

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-5

What is the purpose of a dichotomous key?

• To determine the identity of items in the natural world

• To classify animals based on their genetic makeup

• To map the geographical distribution of species

• To record the dietary habits of organisms

How many species of animals have zoologists named?

• Less than 1 million

• More than 2 million

• About 500,000

• More than 1.5 million

Tags

NGSS.HS-LS2-2