The plant cell model is likely used to simplify complex structures for educational purposes, aiding comprehension, rather than replicating real cell materials or overcoming limitations of modern microscopes.
The correct answer is option A "The model is easier to view since real plant cells are very small."
The best reason for Mr. Brown to use the model of plant cells in his discussion with his class can be inferred from a thoughtful analysis of the options provided.
Option A suggests that the model is used because real plant cells are very small and difficult to view. While it is true that plant cells can be microscopic, modern microscopes are capable of magnifying these structures for detailed observation. Therefore, the size of real plant cells alone is not the most compelling reason to opt for a model.
Option B implies that plant cell parts cannot be seen with modern microscopes. This statement is inaccurate, as modern microscopes equipped with advanced optics and imaging technologies allow for the visualization of cellular structures at high resolutions. Consequently, the limitation posed by microscopic size is effectively addressed by contemporary microscopy techniques.
Option C suggests that the model is made out of the same materials as the real cell. While this could be an advantageous feature for certain educational purposes, the primary purpose of using a model is usually to simplify complex structures and concepts. The materials used in the model may mimic the real cell to a certain extent, but the emphasis is typically on clarity and ease of understanding rather than an exact replication of cell materials.
Option D proposes that real plant cells can only be viewed with a powerful hand lens. This statement is inaccurate, as plant cells are well within the observable range of modern microscopes, rendering the use of a hand lens unnecessary for cellular examination.
Considering these options, the most plausible and educationally sound reason for Mr. Brown to use the model is likely related to Option C. The model serves as a didactic tool, simplifying the intricate details of plant cells to enhance comprehension among students. While not necessarily composed of the exact materials found in real cells, the model is designed to highlight key structures and functions, aiding in the effective communication of essential concepts related to plant cell biology.
In summary, the most suitable reason for using the plant cell model is to facilitate understanding by simplifying complex structures, rather than being solely based on the size of real plant cells or limitations of microscopic techniques.