parenchyma

Examples of parenchyma in the following topics:

• Leaf Structure, Function, and Adaptation

  • The mesophyll of most leaves typically contains two arrangements of parenchyma cells: the palisade parenchyma and spongy parenchyma .
  • Below the palisade parenchyma are loosely-arranged cells of an irregular shape.
  • These are the cells of the spongy parenchyma (or spongy mesophyll).
  • In aquatic plants, the intercellular spaces in the spongy parenchyma help the leaf float.
  • The numerous small bumps in the palisade parenchyma cells are chloroplasts.

• Stem Anatomy

  • Parenchyma cells are the most common plant cells .
  • Parenchyma cells are responsible for metabolic functions, such as photosynthesis.
  • In addition, some parenchyma cells store starch.
  • Xylem tissue has three types of cells: xylem parenchyma, tracheids, and vessel elements.
  • The central pith and outer cortex of the (a) flax stem are made up of parenchyma cells.

• Vascular Tissue: Xylem and Phloem

  • The tissue consists of vessel elements, conducting cells, known as tracheids, and supportive filler tissue, called parenchyma .
  • The substances travel along sieve elements, but other types of cells are also present: the companion cells, parenchyma cells, and fibers.

• Plant Tissues and Organ Systems

  • It includes three different cell types: vessel elements and tracheids (both of which conduct water) and xylem parenchyma.
  • Phloem tissue, which transports organic compounds from the site of photosynthesis to other parts of the plant, consists of four different cell types: sieve cells (which conduct photosynthates), companion cells, phloem parenchyma, and phloem fibers.

• Diversity of Angiosperms

  • In palm trees, vascular and parenchyma tissues produced by the primary and secondary thickening of meristems form the trunk.