Answer: sigmoid (S-shaped).
- A sigmoid (S-shaped)
- B a straight-line
- C a circular one
- D a zigzag one
Correct answer: A. sigmoid (S-shaped)
Explanation: Growth follows a characteristic S-shaped (sigmoid) curve.
Geometric growth (where both daughter cells keep dividing) produces this classic S-shaped curve: a slow lag phase, a rapid exponential phase, and a levelling-off stationary phase as nutrients or space become limiting - the same fundamental pattern seen in population growth.
Concept context
Phases of plant growth, the five classical plant hormones plus newer ones, photoperiodism, vernalization, and seed dormancy.