Entry Exam Category: High School Equivalency Exams
Course: General Education Development (GED)
Exam: GED Science and Practice Test
Practice Question
The cladogram shows the relatedness of several organisms based on shared characteristics. Which characteristic separates catfish from frogs?
Answer Choices
- A: Suborbital fenestra
- B: Amniotic egg
- C: Four limbs
- D: Bony skeleton
Correct Answer: B
Rationale: Frogs are amphibians that lay amniotic eggs, while catfish (fish) do not. This is a key evolutionary trait distinguishing them.