Vegetative propagation in Eicchornia and Pistia occurs by ________.

Concept:

• Asexual reproduction is a mode of reproduction in which new offspring are produced by a single parent without the involvement of gametes or fertilization.
• Offspring produced by such reproduction are genetically identical copies of the parents.
• Asexual reproduction can be of the following types:
  • Binary fission
  • Budding
  • Fragmentation
  • Gemma-cup formation
  • Spore formation
  • Vegetative propagation

Important Points

• Vegetative propagation is a form of asexual reproduction of a plant wherein a new plant grows from stems, roots, and leaves.
• Vegetative propagation can be natural and also can be done artificially.
• The parts which participate in vegetative propagation are called vegetative propagules.
• Eichhornia and Pistia are aquatic plants that propagate by offsets.
• Offset is a type of sub-aerial modification of stem formed due to mitotic division.
• It is formed by a lateral branch with a short internode and each node containing a rosette of leaves and a tuft of roots.

Additional InformationSome Other Vegetative propagules - 

• Runner - Grass
• Rhizome - Ginger
• Bulbil - Agave
• Leaf Bud - Bryophyllum