Organisms

Organisms are living things that have the characteristics of life, including the ability to grow, reproduce, respond to their environment, and maintain homeostasis. They can be single-celled, like bacteria, or multicellular, like plants and animals. Organisms are classified into different kingdoms based on their characteristics and evolutionary relationships.

Characteristics of Organisms

Growth: Organisms increase in size through cell division and the synthesis of new materials.
Reproduction: Organisms produce offspring either sexually or asexually, ensuring the continuation of their species.
Response to Environment: Organisms can detect and respond to changes in their environment to maintain their internal conditions.
Homeostasis: Organisms have mechanisms to regulate their internal environment and maintain a stable internal balance.

Classification of Organisms

Organisms are classified into different kingdoms based on their characteristics:

Animalia: Multicellular organisms that are heterotrophic (obtain food by consuming other organisms) and have the ability to move.
Plantae: Multicellular organisms that are autotrophic (produce their own food through photosynthesis) and have cell walls.
Fungi: Multicellular or unicellular organisms that are heterotrophic and have cell walls made of chitin.
Protista: Mostly unicellular organisms that do not fit into the other kingdoms and have diverse characteristics.
Monera: Single-celled organisms, including bacteria, that lack a distinct nucleus and other membrane-bound organelles.