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There are differences between Biology diagrams and drawings.

Although the guidelines for drawing them are similar and the terms are sometimes used interchangeably, their prerequisites and purposes are different. Bear the following distinctions in mind.

Diagram

Accurate in its general proportions and shows only the most important features.

May be produced by looking at a specimen, apparatus, photograph or even another diagram

Prerequisite knowledge is necessary to know which features to include and which detail to ignore. You are forced to think about the component structures and their relative positions.

Symbols may be used for structures in order to simplify the diagram.

Drawing

Detailed and accurate representation of a specimen


Specimen must be in front of you, viewed with the naked eye, magnifying glass or microscope


No prerequisite knowledge of the specimen is necessary - just draw and label the detail you see. This detail is useful for later identification of the specimen.

Is it useful to memorize diagrams and drawings?

Ask any above-average biology student and he  or she will admit that memorization of diagrams is a critical part of his strategy for learning and for success at exams.

This is because drawing
  1. Forces you to observe the relationship between structures and to learn labels and annotations. Hence your understanding is deepened and learning consolidated.
  2. Helps you meet the requirements for an exam question e.g.' With the use of a diagram explain... ' or 'Identify the structure...'
  3. Reduces the writing you do in order to explain, especially if you use annotations. (An annotation is a short, descriptive note)
  4. May earn marks for you even when your written explanation is unsatisfactory.

What is the best way to memorize biology diagrams?

There is not much time for drawing in class, so you must take responsibility for learning diagrams.

With each topic you should note the diagrams you should know. Draw correctly labelled and well-annotated diagrams on flash cards during your course or in preparation for exams. Take these cards with you everywhere you go and review them while waiting.

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