Classification quiz: Reptile, mammal, amphibian, fish. In this exercise, students will learn to distinguish if organisms fall under the categories earlier listed. Reptiles (example, lizard, crocodile) lay eggs and have a slender body. Amphibians (e.g. toad and frog) partly live on land and in water, mammals (e.g. man, money, dog) have bodies covered by hair, birds (e.g. parrot) have wings, lay eggs and have two limbs, fish (e.g. sharks) live in water. In this quiz, students are required to classify each organism shown in each question. | Multiple choice quiz featuring biology test questions for students to review biology topics. Click on each question and select the correct answer below and submit. Feedback is instant and at the end you will get your score. Biology quiz for 2nd, 3rd, 4th, 5th, 6th, 7th grades to review. Focus: Online science Trivia | science quiz questions | Biology Test | Biology questions.