Why are higher forms of animals bilaterally symmetrical? Explain.

Which of the following structures is unique to mammals?   Question 6 options:   A)  Primitive meninx   B)  Dura mater   C)  Pia mater   D)  Secondary meninx

For context: This activity will examine the classification of invertebrates and the methods used to determine relationships among the many invertebrate phyla. Question: Are there newer trends in determining evolutionary relationships? If yes, what are they?

Explain how the following characters of modern frogs help with jumping locomotion. 1. urostyle and elongated pelvis: 2. Fused tibia+fibula and fused radius+ulna: d. What is the name of the rod-shaped structure present in the vertebral column of the modern anuran that consists of fused vertebral elements?

Describe the aboreal adaptation of nonhuman primates and include specific anatomical characteristics ( mention at least three adaptations). do humans exhibit these anatomical characteritics? Explain