Evolutionary History

What is the process by which species adapt to environmental changes over a very long time ?

• evolution

• a common ancestor population

• speciation

• a generation

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Shared Structures always come from

• random chance

• two different species in a similar environment

• a common ancestor

• species structures are entirely unique.

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What is a related organism from a previous generation?

• an adaptive trait

• an ancestor

• a descendant

• a generation

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Every time there is a branch in an evolutionary tree, it means,

• The environment changed and a new species formed

• two new species were left over as the first suddenly went extinct

• Animals on different branches must live in different time periods

• The locations where you can find the species is spreading.

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NGSS.MS-LS4-2

What structure did the common ancestor have?

• Scapula bone in shoulder

• Three bones in inside ear

• Two bones in inside ear

• Five toes in each back limb

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Which of these animals are the most closely related?

• The Desert Cottontail and The Grizzly Bear, because they are both mammals and give milk to their babies

• The Sea Otter and the Desert Cottontail, because they are both much smaller than the bear

• The Grizzly Bear and the Sea Otter, because they both share a backbone and canine teeth

• All three animals are equally related

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NGSS.MS-LS4-2

Which Traits did the Common Ancestor have? select all that apply

• Tibia Bone

• Lays eggs

• scale

• fur

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NGSS.MS-LS4-2

Which of these animals are more closely related?

• The turtle and the Siamang because they both give live birth

• The Flamingo and the Siamang, because they fur and feathers are more similar that feathers and scales

• The flamingo and the turtle, because they both have a tibia bone and lay eggs

• All three animals are equally related

Tags

NGSS.MS-LS4-2

Evolution is

• a group of organisms of the same kind (in one or more populations) that do not reproduce with organisms from any other group

• the process of turning into a human

• the process by which species adapt to environmental changes over a very long time

• the process by which one population evolves into two or more different species

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Which is the best description of evolution?

• When organisms change for no clear reason

• When organisms change into new organisms

• When organisms change over time to adapt to their environments

• When organisms don't change over time

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