EH 3.2 (3/10)

Last updated over 2 years ago

7 questions

Goal: Place all cetacean species onto the evolutionary tree by determining which species are more closely related.
Do:
• Open Cetaceans mode  of the Sim, press TREE to open Tree View, and navigate to the Cetaceans branch of the tree.
• Study the Blue Whale and Orca structures.
• Read the first question below and place a fossil species into Location 1 (see image above), then repeat this for each of the locations.
• For each location, choose between the two possible species given in the question.
Tip:
• Use the Structures tab in the Study windows and the “i” icons to help you make your decisions.

Which of these two species belongs in Location 1? (Hint: Investigate hind limbs and skulls.)

Explain what specific body structures helped you make your decision.
CFS:
student describes the relationship between anatomical similarities and differences in animal species
student describes the environmental difference between animal species with a common ancestor based on body structures

Which of these two species belongs in Location 2? (Hint: Investigate limb sizes.)

Which of these two species belongs in Location 3 (Hint: Investigate limb sizes.)

Which of these two species belongs in Location 4? (Hint: Investigate hind limb structures.)

Explain what specific body structures helped you make your decision.
CFS:
student describes the relationship between anatomical similarities and differences in animal species
student describes the environmental difference between animal species with a common ancestor based on body structuresWhat evidence do you have?

Which species is Dorudon more closely related to: the blue whale or Ambulocetus? Which diagnostic structure(s) could you use to show this?
CFS:
student describes the relationship between anatomical similarities and differences in animal species
student describes the environmental difference between animal species with a common ancestor based on body structures

EH 3.2 (3/10)

Which of these two species belongs in Location 1? (Hint: Investigate hind limbs and skulls.)

Explain what specific body structures helped you make your decision.CFS:student describes the relationship between anatomical similarities and differences in animal speciesstudent describes the environmental difference between animal species with a common ancestor based on body structures

Which of these two species belongs in Location 2? (Hint: Investigate limb sizes.)

Which of these two species belongs in Location 3 (Hint: Investigate limb sizes.)

Which of these two species belongs in Location 4? (Hint: Investigate hind limb structures.)

Explain what specific body structures helped you make your decision.
CFS:
student describes the relationship between anatomical similarities and differences in animal species
student describes the environmental difference between animal species with a common ancestor based on body structures