Medium General Science GENERAL SCIENCE FPSC Question Which of the following organisms is invertebrate? A Birds B Amphibians C Reptiles D Worms Submit Answer Try Again Show Explanation Explanation Explanation An invertebrate is an animal without a backbone. Worms, like earthworms, are classified as invertebrates. They lack a backbone and are found in various environments. Previous MCQ All MCQs Next MCQ More MCQs in General Science Medium A magnet that is hard to magnetize is called a(n)? A magnet that is hard to magnetize is called a(n)? Medium Birds exhibits which of the following traits? Birds exhibits which of the following traits? Medium Which of the following is/are the characteristics of reptiles? Which of the following is/are the characteristics of reptiles? Medium Which of the following is/are characteristics of amphibians? Which of the following is/are characteristics of amphibians?