Hello. This question is incomplete. The full question is:
" Which sequence shows a decreasing level of complexity? 1) organs organism cells tissues , 2) organism cells organs tissues , 3) cells tissues organs organism , 4) organism organs tissues cells"
Answer:
4) organism organs tissues cells
Step-by-step explanation:
The order "organism, organs, tissues, cells" shows the levels of organization in a decreasing level of complexity.
There are several hierarchical levels of organization among living beings, starting with atoms and ending with biomes. Each of these levels is a matter of study for biologists. These levels are:
- Atoms: a very small part of matter. Atoms are divided into protons, neutrons and electrons. The joining of these atoms forms matter in its solid, liquid and gaseous states.
- Molecule: the molecule is a junction of atoms. The molecules are diverse substances and are formed by different atoms (H2O) or by the same atoms (O2);
- Organelle: small organ-like structures that are present in animal and plant cells. They help to carry out the vital functions of cells;
- Cell: cells are the functional units that make up animal and plant organs. They perform breathing and reproduction in addition to saving the genetic information of beings;
- Tissue: is the visible part of the organs, formed by a group of plant or animal cells. Our skin, for example, is a type of tissue. Tissues are responsible for storing cells, blood vessels, making excretions such as sweat.
- Organs: set of tissues. The organs perform various types of functions: the heart pumps blood, the stomach helps with food, the small intestine absorbs substances.
- System: set of interconnected organs. Our digestive system, for example, has a mouth, tongue, esophagus, stomach and intestine.
- Organism: set of systems that form a living being, for example, the human being, a lion, a plant.