Gas exchange - drawing leaf structure Flashcards
What are the structures you need to identify in the leaf of a dicotyledonous plant?
- Chloroplasts
- Cuticle
- Guard cells
- Stomata
- Upper epidermis
- Lower epidermis
- Palisade mesophyll
- Spongy mesophyll
- Air spaces
- Vascular bundles (xylem and phloem)
What is a plan diagram?
A drawing made from micrographs or from viewing specimens under low magnification.
What should not be included in a plan diagram?
Individual cells; only tissue layers enclosed by lines should be present.
What should you pay attention to when drawing a plan diagram?
The distribution of tissue throughout the plant organ.
What tools should be used for drawing a plan diagram?
A sharp pencil for clear, continuous lines.
Should any part of your drawing be shaded?
No.
What should you ensure about your proportions and observations in a plan diagram?
They should be accurate.
What is important to remember when drawing what you see?
Draw what you actually see, not what you would expect to see from a textbook.
How big should your drawing be in relation to the available space?
It should fill up at least half the available space.
What is the correct way to draw label lines in a plan diagram?
Use a ruler to draw label lines, not freehand.
What should you avoid when drawing label lines?
Using arrowheads and ensuring label lines do not cross each other.
How should all labels be written in a plan diagram?
Horizontally, not at different angles.
