LAB #12 - Marchantia polymorpha
Surface View:
A closer look at a pore.
This shows you what the bottom surface of the thallus looks like. Note a scale indicated with an arrow.
Thallus cross-section:
Cross-section through the lower side of the thallus showing a section through a scale and rhizoids in cross-section.
Rhizoids:
REPRODUCTIVE STRUCTURES:
Gemmae (Asexual Reproduction):You can see the gemma cups (indicated with an arrow). These cups produce numerous small structures called gemmae which can grow into whole new plants.
Close-up of a gemma cup. This is a longitudinal section through a gemma cup (arrows point to gemmae).
The two black arrows on the picture of gemma below indicate the growing points, from which new thalli will grow.
Antheridiophore:Note the antheridiophore indicated with the pink arrow.
Thisis a look at the top of the antheridial disk.
Here is close-up of antheridia in a preparedslide.
Sperm!
Archegoniophore:This is a young archegoniophore.
The longitudinal section through the top of the archegoniophore shows the archegonia (A), each with an egg or zygote within.
Here is what the archegoniophore look like after the spores have been released.
|
||||||