What type of symmetry is found in adult echinoderms like sea stars?


What type of reproduction is found in honeybees, where males develop from unfertilized eggs?


Which of the following is a characteristic of mammals but not of other vertebrates?


What is the name of the larval stage of a frog?


What is the primary function of nephridia in annelids?


Which of the following animal groups exhibits a closed circulatory system?