Which type of organisms are made up of many cells, such as plants and animals?

Multicellular organisms are composed of many cells that work together to perform various functions. This cellular organization allows for specialization, where different types of cells carry out distinct roles, contributing to the overall functioning of the organism. In complex organisms like plants and animals, various tissues and organs are formed from these specialized cells, enabling intricate systems for processes such as growth, reproduction, and response to environmental stimuli.

In contrast, unicellular organisms consist of just one cell, which performs all necessary life functions independently. Prokaryotes, which include bacteria and archaea, are typically unicellular and lack a nucleus, while eukaryotes include both unicellular and multicellular organisms but are defined by having complex cells with a nucleus and organelles. Thus, “multicellular organisms” is the correct classification for those like plants and animals, highlighting their complex structure and functionality.