Level Of Organisation
Overview
Your body contains around 37 trillion cells, but those cells are not all the same. They are organised into layers of increasing complexity, from tiny structures inside a cell right up to complete organ systems that keep you alive.
In this lesson you will learn the five levels of organisation in living organisms: organelles, cells, tissues, organs, and organ systems. Understanding this hierarchy is essential for explaining how structure relates to function throughout biology.
Objectives
- Describe the levels of organisation in organisms: organelles, cells, tissues, organs and systems
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Level Of Organisation. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Which of the following is the correct order from simplest to most complex? A) Cell, tissue, organ, organelle, organ system B) Organelle, cell, tissue, organ, organ system C) Organ, tissue, cell, organelle, organ system D) Organelle, cell, organ, tissue, organ system Answer: B
- A tissue is best described as: A) A single cell that can carry out all life processes B) A group of different organs working together C) A group of similar specialised cells working together D) A structure made of two or more tissues Answer: C
- Which of the following is an organ? A) Muscle tissue B) A red blood cell C) The stomach D) A ribosome Answer: C
- Which organelle is the site of aerobic respiration? A) Nucleus B) Ribosome C) Chloroplast D) Mitochondrion Answer: D
- A leaf is classified as an organ because it: A) Is made of a single type of cell B) Contains two or more types of tissue working together C) Is part of the root system D) Can carry out all life processes independently Answer: B
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Practice Mock Questions
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