Question

1. answer these questions: which shows the levels of organization in multicellular organisms from simplest to most complex? a organ system, organ, tissue, specialized cell b specialized cell, tissue, organ, organ system c cell, molecule, tissue, organ system d organ system, tissue, cell, molecule

Explanation:

To determine the correct order of levels of organization in multicellular organisms, we recall the biological hierarchy. The simplest unit is a specialized cell (as cells are the basic building blocks, and specialized cells have specific functions). Groups of similar specialized cells form tissues. Tissues working together form organs, and organs working together form organ systems.

• Option A is incorrect as it reverses the order (starts with organ system, which is complex, not simple).
• Option C is incorrect because molecules are at a sub - cellular level, and the order should start with cells (specialized cells) for multicellular organism organization.
• Option D is incorrect as it also reverses the order (starts with organ system and goes to smaller, less complex units in the wrong direction).
• Option B follows the correct order: specialized cell (simplest), then tissue (group of cells), then organ (group of tissues), then organ system (group of organs).

Answer:

B. specialized cell, tissue, organ, organ system