Organ systems
Report Abuse. Actually, you would have to further define system as either an organ system or an ecosystem. A body or organ system is a part of an organism that carries out a function, like the respiratory system is the lungs and trachea that carry out breathing, and would be smaller than an organism. But in biology terms, a system refers to an ecological community, or ecosystem. This would be bigger than an organism. If we assume they meant organ system, Organism, system, organ, tissue, cell, organelle, molecule, atom. All known types of organisms are capable of some degree of response to stimuli, reproduction, growth and development and homeostasis. An organism consists of one or more cells; when it has one cell is a unicellular organism; and when it has more than one it is known as a multicellular organism. Most unicellular organisms are of microscopic size and are thus classified as microorganisms. Humans are multicellular organisms composed of many trillions of cells grouped into specialized tissues and organs. An organism may be either a prokaryote or a eukaryote. The term organism (from Greek ὀργανισμός, organismos, from ὄργανον, organon, i.e. instrument, implement, tool, organ of sense or apprehension) first appeared in the English language in 1703 and took on its current definition by 1834 (Oxford English Dictionary). It is directly related to the term organization The earth is a living system. The living world of the earth is called the biosphere. It is the region of the earth that supports life. The biosphere is so complex that ecologists and other scientists break it down into smaller units to study. The smaller units are called ecosystems.  In this context, a society is larger than an organism, because organisms make up societies. It has been proposed that societies are truely better refered to as societal organisms, not meaning an organism that is social, but rather looking at society as a living organic system rather than an institution we put in place. An organ is part of an organ system, which is organs working together. tissue is a collection of interconnected cells that perform a similar function within an organism.Animal tissues There are four basic types of tissue in the body of all animals, including the human body and lower multicellular organisms such as insects. These compose all the organs, structures and other contents. * Muscle tissue-Muscle cells are the contractile tissue of the body. Its function is to produce force and cause motion, either locomotion or movement within internal organs. Yes. Organ systems are bigger than an organ because an organ system contains multiple organs as once again it is a whole system of organs than just 1 organ. I hope this helps. An organ is part of an organ system, which is organs working together. The deltoid is an organ since it is made of muscle tissue. Organ-Group of tissues working together, e.g layers of skeletal muscle tissue which form the deltoid. Tissue-Group of cells working together e.g. skeletal muscle tissue(which makes up your deltoid muscle) Cells-Basic unit of living things, e.g muscle cell. Source(s): Undergrad anatomy and physiology. 
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what is bigger system or organism