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NOTIFICATIONSWhen you look at the world around you, how do you categorise or group what you see? One of the broadest groupings is 'living' and 'non-living'. This may sound simple, but it is sometimes difficult to decide whether something is truly alive or not. Here we look at the characteristics of living things – using earthworms as an example. All living things share life processes such as growth and reproduction. Most scientists use seven life processes or characteristics to determine whether something is living or non-living. The table below describes seven characteristics of most living things and contains references to earthworms to explain why we can definitely say that they are 'living'.
Further classificationBased on the information above, we can confidently categorise earthworms as living things as they carry out all seven life processes. It is now possible to classify them further into a series of hierarchical categories: kingdom, phylum, class, order, family, genus and species. Classifying living things into these categories is an important way for scientists to show how living things are related to each other. Most scientists classify living things into one of the following six kingdoms.
Which kingdom do you think earthworms belong to? Animal characteristicsWhat did you decide? Sometimes people are surprised to find out that earthworms are actually animals – the same kingdom as humans, cats, dogs, dolphins and spiders! Just as living things share a set of common characteristics, animals have key characteristics that can help you to decide whether a living thing is an animal or not. Key characteristics of animals include the following:
Nature of scienceScientists need scientific vocabulary to communicate effectively. At an even more fundamental level, scientific language actually helps shape ideas and provides the means for constructing scientific understandings and explanations. Useful linkVisit the Science Continuum website from the Australian education website (Victoria Department of Education and Training) for more information about common student alternative conceptions related to living things and classification. Would you like to take a short survey?This survey will open in a new tab and you can fill it out after your visit to the site. Which of the following is a characteristic of all living things?Big Ideas: All living things have certain traits in common: Cellular organization, the ability to reproduce, growth & development, energy use, homeostasis, response to their environment, and the ability to adapt. Living things will exhibit all of these traits.
Which of the following is not a living thing?Water is a non-living thing.
Which of the following is a characteristic shared by all living things?All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.
What are the 7 characteristics of all living things?The seven characteristics what makes an organism living are: Environmental responses, cells, change and growth, reproduction, having complex chemistry, and homeostasis and energy processing. Sometimes non-living things can portray some of the above characteristics, but a living being consists of all.
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