Question 6

Question

A) Which body part is a vestigial structure? (1 point)
bat wing
whale hind limb
human arm
horse hoof
Question 7
A) During a trip to the museum, you come across a display on the gray whale and one of its
ancestors. The ancestor whale appears to have nostrils at the front of its skull, while the modern
gray whale has nostrils at the top of its skull. If you were to add a transitional fossil to this display,
what would its skull look like in terms of nostril placement? (1 point)
The transitional fossil would have nostrils at the top of the skull.
The transitional fossil would have nostrils at the front of the skull.
The transitional fossil would have nostrils in the back of the skull.
The transitional fossil would have nostrils in the middle of the skull.
Question 8
A) Some horse ancestors had limb characteristics that were similar to what we see in the modern
horse. Which of the following best describes the evolution of horse limbs over time? (1 point)
Over time, the horse limb gained foot bones.
Over time, the horse limb grew wider.
Over time, the horse limb got longer.
Over time, the horse limb became shorter.
Question 9
A) Fish, amphibians, reptiles, birds, and mammals have similar embryos.
They all start with gill slits. Fish and some amphibians grow to have gills. Some amphibians,
reptiles, birds, and mammals develop lungs to breathe air.
They all start with tails. Fish, some amphibians, reptiles, and birds grow tails. Humans do not keep
their tails.
Fish and reptiles develop scales. Amphibians, birds, and humans have skin. Birds have feathers,
and humans have hair.
Which of the following animals exhibits the most nonlinear relationship as compared to the rest?
(1 point)
amphibians
birds
reptiles
fish
Question 10
A) Embryos of different animals show patterns of similarities. What is this evidence for? (1 point)
that these animals all have the same physical structures
that these animals all have very similar DNA
that these animals have linear relationships
that these animals evolved from a common ancestor
Question 11
A) Which statement is correct? (1 point)
All vertebrate embryos have tails.
All vertebrate embryos have hair.
All vertebrate embryos have ears.
All vertebrate embryos have legs.
Question 12
A) Which pair of living organisms are likely to have evolved from the same ancestor? (1 point)
fish and birds
fungi and amoebae
birds and amoebae
fish and fung

Answer 1

Here are the answers to the questions you provided:

Question 6 A) Which body part is a vestigial structure?

• whale hind limb

Question 7 A) If you were to add a transitional fossil to the display, what would its skull look like in terms of nostril placement?

• The transitional fossil would have nostrils in the middle of the skull.

Question 8 A) Which of the following best describes the evolution of horse limbs over time?

• Over time, the horse limb got longer.

Question 9 A) Which of the following animals exhibits the most nonlinear relationship as compared to the rest?

• birds

Question 10 A) Embryos of different animals show patterns of similarities. What is this evidence for?

• that these animals evolved from a common ancestor

Question 11 A) Which statement is correct?

• All vertebrate embryos have tails.

Question 12 A) Which pair of living organisms are likely to have evolved from the same ancestor?

• fish and birds

Feel free to ask if you have any follow-up questions or need further explanations!