Evolutionary Relationships — Unit test

Question 1

Three organisms have four shared characteristics. They all have a backbone and scales, lay eggs, and walk on land.What can be determined based on this information alone?

Revolt · Accepted Answer

Their common ancestor has the same four shared characteristics.

Question 2

Each year, as winter approaches, some species become inactive. They may sleep and use their body’s fat for energy during the cold season.What is this behavior called?

Revolt · Accepted Answer

hibernation

Question 3

Kelli drew a diagram to compare cast and imprint fossils.

Revolt · Accepted Answer

Takes millions of years to form

Question 4

Which scenario would most likely result in the extinction of one or more species?

Revolt · Accepted Answer

A predatory fish is introduced into a lake, resulting in a dramatic decrease in the populations of smaller fish.

Question 5

After Dante catches the flu virus, he feels very tired and loses his appetite. His body aches and he gets a high fever.Which best describes Dante’s symptoms?

Revolt · Accepted Answer

they are a response to an infection, which is an internal stimulus

Question 6

Birds and humans are theorized to have a common ancestor because they have homologous structures.Which evidence best supports this theory?

Revolt · Accepted Answer

They both have tails as embryos.

Question 7

There are green and red bugs living in an area. As a result of an environmental change, birds that live in the same area grow in numbers. These birds eat the bugs, and they prefer the taste of the red bugs.

Revolt · Accepted Answer

Green bugs will survive better and reproduce, so the bug population will evolve into mostly green bugs.

Question 8

A scientist observes fossil evidence that leads her to believe that certain organisms have a common ancestor.Which observation most likely led to this conclusion?

Revolt · Accepted Answer

She observed a fossil with skeletal structures similar to certain modern organisms.

Question 9

Which has been observed in the study of embryology?

Revolt · Accepted Answer

Some traits in certain embryos disappear as the embryo develops.

Question 10

Which statements best describe the cladogram? Select three options.

Revolt · Accepted Answer

Birds and reptiles are most closely related.; Frogs are more closely related to birds than fish.; Fish are the most primitive.

Evolutionary Relationships — Unit test Answers

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