Question

question 1 / 1
which sequence is arranged from simplest to most complex?
a. squamous cell - skin - integumentary system - epithelial tissue - human
b. squamous cell - epithelial tissue - skin - integumentary system - human
c. human - integumentary system - squamous cell - skin - epithelial tissue
d. human - squamous cell - skin - epithelial tissue - integumentary system

Explanation:

In biological organization, the hierarchy is cell → tissue → organ → organ system → organism. A squamous cell is a cell. Epithelial tissue is made of cells. Skin is an organ (made of tissues). The integumentary system is an organ system (including skin). A human is an organism. So we check each option against this hierarchy.

• Option A: Incorrect order as epithelial tissue (tissue level) should come before skin (organ level).
• Option B: Follows cell (squamous cell) → tissue (epithelial tissue) → organ (skin) → organ system (integumentary system) → organism (human).
• Option C: Starts from organism (human) which is the most complex, so wrong.
• Option D: Also starts from organism (human) which is wrong.

Answer:

B. squamous cell → epithelial tissue → skin → integumentary system → human