Question

1. Describe the hierarchical structural organization found in multicellular organisms.

Answer 1

The answer is:

From smallest to largest (within the organism):

Cell, Tissue, Organ, Organ System, Organism.

Explanation:

Groups of similar cells working together for a function are tissues. Similar tissues working together to perform a function make an organ. Similar organs with a common purpose are called an organ system. Multiple organ systems make up the organism.

Below the cellular level, there are organelles, molecules, atoms, and subatomic particles.

Above the organism, there are populations (all of the organisms of a species in an area), communities (all species in an area), ecosystems (the community and environment), and the biosphere (the Earth).

Answer 2

Structural organization of life is the existence of life from a single celled organisms to multi cellular organism with complex forms that perform different functions.

The structural organization found in multicellular organisms from the lowest to the highest in hierarchy are described below.

• The organelle: This is the non-living part of a cell that interacts to form a cell.

• The cell level: This is the basic functional and structural unit of life.

• The tissue level: This is the collection of cells that are similar in structure and perform similar function.

• The organ level: This is the collection of different tissue that perform different functions. Examples are kidney, heart, liver.

• The system: This is the collection of different organs that perform a particular function. Examples of system include circulatory system and excretory system.

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