Organism: Definition & Explanation


Choose an answer and hit 'next'. You will receive your score and answers at the end.

question 1 of 3

What is the definition of an organism?

Create Your Account To Take This Quiz

As a member, you'll also get unlimited access to over 79,000 lessons in math, English, science, history, and more. Plus, get practice tests, quizzes, and personalized coaching to help you succeed.

Try it risk-free
Try it risk-free for 30 days. Cancel anytime
Already registered? Log in here for access

1. Not counting micro-organisms, how many different species of organisms do scientists estimate exist on Earth right now?

2. What is the proper order of Linnaean classification, from highest to lowest?

Create your account to access this entire worksheet
A Premium account gives you access to all lesson, practice exams, quizzes & worksheets
Access to all video lessons
Quizzes, practice exams & worksheets
Certificate of Completion
Access to instructors
Create an account to get started Create Account

About This Quiz & Worksheet

Focusing on the immense task of classifying all of the life around us, this quiz and corresponding worksheet will help you gauge your knowledge of the characteristics of organisms. You'll be asked about the definition of an organism and the number of organisms that exist on Earth currently.

Quiz & Worksheet Goals

Use this printable worksheet and quiz to review:

  • Definition of an organism
  • How many organisms exist
  • Proper order of Linnaean classification
  • Meaning of binomial nomenclature
  • Binomial name of the blue whale

Skills Practiced

This worksheet and quiz will let you practice the following skills:

  • Interpreting information - verify you can read information regarding how many organisms exist and interpret it correctly
  • Knowledge application - use your knowledge to answer questions about the proper order of Linnaean classification
  • Reading comprehension - ensure that you draw the most important information from the related organisms lesson

Additional Learning

To learn more about where a bug needs to go, review the corresponding lesson named Organism: Definition & Explanation. This lesson will help you:

  • Understand what an organism is
  • Identify the science used to classify organisms
  • Describe who developed our current naming system for living things
  • Explain how organisms on Earth are classified
  • Appreciate the benefits of a binomial naming system