Question

What is the sequence that illustrates the increasing complexity of levels of organization in multicellular organisms?

Answer 1

Answer:

The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.

Explanation:

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Answer 2

The increasing order of complexity in multicellular organism is as follows: Subatomic particles →atoms →molecules → organelles →cells →tissues→organs →organ systems→ organisms →Populations→Communities→biosphere.

• The evolution of creatures from the simplest to the most sophisticated structures is explained by hierarchical organisation.
• Complex creatures are capable of performing a wide range of functions independently.
• The basic unit of life is where the stage of organisation begins.
• Cells are the fundamental building blocks of life and are responsible for all of an organism's functions.
• The cells are organised in loose cell aggregates eg. Poriferans.
• Tissues are made up of cells that perform the same task or have the same structure. Coelenterates and ctenophores have this level of organisation.
• Organs are formed when tissues are combined together to perform a specific function. Platyhelminthes have this amount of organisation.
• Organs of higher animals are linked together to form functional systems, each of which is responsible for a certain physiological function. Aschelminthes to chordates  have different organ systems.
• The biosphere is constituted of all environments on Earth where life exists.