Plant tissues. Parenchyma.
AQUIFEROUS
Organ: stem, aquiferous parenchyma.
Species: cactus.
Technique: 8 µm thick section stained with Alcian blue / safranin.
Species: cactus.
Technique: 8 µm thick section stained with Alcian blue / safranin.
In this figure of a cactus, a xerophyte, parenchyma cells containing mostly water are observed in a section of the plant stem. They have thin primary cell walls and mucilage in the cytoplasm, stained with safranin. Intercellular spaces are also observed.
Actualizado: 11-11-2025. 11:20
Atlas of plant and animal histology
Plant tissues. Collenchyma.
ANGULAR
Organ: stem, angular collenchyma.
Species: ivy (Hedera helix).
Technique: paraffin embedding, section stained with methylene blue.
Species: ivy (Hedera helix).
Technique: paraffin embedding, section stained with methylene blue.
In the angular collenchyma, the cell wall thickenings occur at the angles of the cell surface where several cells converge, hence the absence of intercellular spaces in this tissue. The thickenings are like pillars arranged longitudinally in the plant body, providing great mechanical resistance.
Updated: 2025-11-11. 11:20