See the below image for the How to draws in biology diagram. Biological drawings must be done on unlined sheets or plane sheets, for more authenticity. This principle should be followed particularly when you are drawing a diagram for your biology lab copy or record. But don’t worry about your board exam you get lined copy and you have to draw on that lined sheet. 6.
Drawing Materials: All drawings should be done with a sharp pencil line on white, unlined paper. Diagrams in pen are unacceptable because they cannot be corrected. Positioning: Center drawing on the page.
Biological drawings should be conspicuous for easier comprehensibility- Avoid crowding components of the diagram. A biological drawing must bear all relevant parts that are conspicuous enough to the human eye. It should also be large enough to current the whole complicated background details of the diagram to the observer.