Cells & Body Systems

Dive into the fascinating world of cells and body systems! This Grade 6 worksheet makes learning science fun.

Levels of organisation an organism Watch this video to help you answer the questions that follow. Cellular Organization Which of the following terms means "made of one cell"? multicellular cell theory unicellular tissue Which of the following is an example of a unicellular organism? oak tree bacteria caterpillar bear Which of the following terms means "made of more than one cell"? multicellular cell theory unicellular nucleus Which of the following is an example of a multicellular organism? yeast archaebacteria bear eubacteria Fill in the blanks. Cellsare the smallest units of life. All living things are made up of them. A group of cells is called a tissue. Groups of these then become organs. When we have a number of organs together that do similar jobs, we have an organ system. When the organ systems are all working together we have an organism. Match the body system to its main function. Respiratory system Bring oxygen in and get carbon dioxide out. Circulatory system Pump blood around the body Digestive system Extract nutrients from the food we eat. Excretory system Remove wastes Skeletal system Protect our body Immune system Protect us from disease Nervous system Send messages around the body Watch the video and answer the multiple choice questions that follow. Which body system produces hormones? Endocrine Nervous digestive Circulatory Which system allows for movement? Digestive Nervous Muscular Immune Which system provides us with the ability to reproduce? Nervous Reproductive Nervous Endocrine Which system has a major role in gas exchange? Respiratory circulatory Digestive Nervous