Here are the photos taken by students in class based on their hand
sections
from a variety of plant tissues. Although the sections could
always be
thinner (don't I always say this?), many of the important
characteristics
of parenchyma, collenchyma, and sclerenchyma cells can be seen.
The first image shows potato tissue stained with iodine.
The next image shows apple seed endosperm tissue containing oil droplets.
Next are three images from the tissues of
pear fruits showing sclerids:
The next five images show the epidermis
of the spinach leaf, including some nice views of guard cells with
chloroplasts:
The next seven images show sections through
the spinach leaf, showing photosynthetic parenchyma with chloroplasts:
These last two images show collenchyma
near the epidermis of the spinach leaf petiole:
