Practical 4 (that wasn’t actually a practical) - Leaf transverse section and root under 40x magnification Flashcards
What type of leaf did we observe its transverse section?
Ligustrum leaf
What was the magnification used in this practical?
40x
What three things do we need to ensure we do when drawing diagrams of what we see under the microscope?
-Lower power = no cells (2 or 3 in high)
-Lines with a ruler, no overlapping
-Don’t write labels ON the diagram
Draw and label a ligustrum leaf transverse section
(Check notes)
What do we occasionally see stomata in?
The lower epidermis
Stomata
Pores where air enters the cell
Where would we sometimes see the stomata in the ligustrum leaf transverse section?
Lower epidermis
What do we see in the spongey mesophyll?
Circular cells with obvious air spaces between them - gases that enter the leaf circulate here
Where do gases that enter the leaf circulate?
Spongey mesophyll
What forms the vascular bundle in the leaf transverse section?
-Xylem
-Cambium
-Phoelem
What do the Xylem, Cambium and Phoelem form in the leaf transverse section?
The vascular bundle
What happens in the palisade mesophyll?
Most of the photosynthesis in the leaf - on the upper surface to receive more sunlight
Where does most of the photosynthesis in the leaf happen?
Palisade mesophyll
Where is the palisade mesophyll situated and why?
On the upper surface to receive more sunlight - sunlight penetrates through the transparent upper epidermis
What’s situated on the upper surface of the lea transverse section in order to receive more sunlight?
Palisade mesophyll
