HORTICULTURE

Detailed explanation-1: -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.

Detailed explanation-2: -Cells are the most basic unit of life at the smallest level of organization. Cells can be prokaryotic (without nucleus) or eukaroyotic (with nucleus). The four categories of tissues are connective, muscles, epithelial, and nervous tissues.

Detailed explanation-3: -Each organ performs one or more specific physiological functions. An organ system is a group of organs that work together to perform major functions or meet physiological needs of the body. We will discuss 11 distinct organ systems of the body. The organism level is the highest level of organization.

Detailed explanation-4: -The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems.

Detailed explanation-5: -The correct answer is D) Organism, system, organ, tissue, cell. The correct order from complex to the most simple levels of organization in the human body is: Organisms (Most Complex) Organ System.