Large organisms need transport systems to supply all their cells with food, oxygen and other materials.Multi-cellular organisms are too big and not all of their cells have contact with the external environment. All organisms need to exchange substances with their environment - take in needed molecules and get rid of waste. A uni-cellular organism can use the processes of osmosis, diffusion and active transport to transport substances in and out of the organism, which is in this case just one cell. But as organisms increase in size, they need a specialized transport system to exchange substances between the internal environment and the external environment. Interestingly enough, osmosis and diffusion are still the important mechanisms at the cellular level.
No, muticellular.
no it does not, only living organisms that are vetebrates have blood
Plants, specifically vascular plants, have water transport systems called xylem and phloem. These systems are responsible for transporting water, nutrients, and sugars throughout the plant. Aquatic organisms, like jellyfish and sea anemones, also have water transport systems that help with circulation.
The levels of organization of biological systems from simplest to most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and biosphere.
The levels of organization in biology, from least complex to most complex, are: cells, tissues, organs, organ systems, and organisms. Cells are the basic units of life, which group together to form tissues. Tissues combine to create organs, which work together in organ systems to form a complete organism. This hierarchy illustrates how living systems are structured and how complexity increases from individual cells to entire organisms.
No, muticellular.
no it does not, only living organisms that are vetebrates have blood
Plants, specifically vascular plants, have water transport systems called xylem and phloem. These systems are responsible for transporting water, nutrients, and sugars throughout the plant. Aquatic organisms, like jellyfish and sea anemones, also have water transport systems that help with circulation.
Cells, Tissues, Organs, Organ Systems, Organisms.
Complex organism generally means multicellular, but in that category there are different levels of complexity. Sponges are multicellular, but don't have distinct tissue, for example. Generally, any living thing that you can see with your naked eye is extremely complex.
No, not all living things are complex. Some living organisms, like bacteria and single-celled organisms, are relatively simple in structure and function compared to more complex organisms like plants and animals. Complexity in living things can vary greatly depending on the species and their evolutionary history.
Usually, complex organisms consist of many organ systems, which comprise from two or more organs, which is from two or more tissues, which comes from two or more cells working for the common function.
Complex systems biology
The levels of organization of biological systems from simplest to most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and biosphere.
Multicellular organisms have 5 levels of organization ranging from simplest to most complex...cells, tissues, organs, organ systems, organisms.
Simple Organism some simple organisms are made of single cell. Others are made of many cells that are similar Complex organisms in complex organisms, cells are organized into tissues, which make up organs. Organs form organ systems.
No. Organ systems only develop in larger, complex organisms. E.g. amoeba, a single celled organism, is small enough that all its needs can be obtained by the relevant organelles through diffusion. A dog, a large multi-cellular organisms, needs a system to deliver its requirements to the necessary tissues .