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Set 1, Slide 90, Cross Section, Lightfield
StemCS Linked Set

Stem CS

 

A sunflower stem sample has many vascular bundles along the edge of its sample. Unlike other plants, fibers are visible next to the vascular bundles. There are a few objects that grow out of the epidermis. The center part of the sample is called pith, in which most cells are found.

Vascular Bundles with Fibers

Image Data Description

200x
Xylem, phloem, and fibers are found in one area. These substances seem to be grouped as one set. The holes are xylem, the reddish nets are fibers, and an area between xylem and fibers is phloem.

400x
The cells in the fibers seem to have reddish thick cell walls. Also, some tiny substances are visible inside of the cells.

400x
Interestingly, this vascular bundle doesn't have its mate: fibers. It is found alone.

Collenchyma

Image Data Description

200x
The cells in collenchyma tissue are small and stable in their size and shape. Some cells seem to appear with their nuclei.

200x
This object seems to grow out of the epidermis of the stem. The epidermis is outgrown, and the cells on the object seem to become bigger.

400x
This object is similar to the one shown in the picture above. However, there is a reddish substance filled in the area formed by the outgrown epidermis.

Pith

Image Data Description

200x
The pith part of the sample is mostly made up of cells. These cells are spacious. However, the sizes of the cells don't seem to be constant.

400x
There is a hole formed by cells. This hole is similar to a resin canal, which is found in the pine stem slide.
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