Bio

Cards (11)

  • Knowledge gained in pollen-pistil interaction can help plant breeders manipulate pollination to get desired hybrids
  • Endosperm development precedes embryo development
  • Endosperm tissue is filled with reserve food materials for the nutrition of the developing embryo
  • In the most common type of endosperm development, the primary endosperm cell undergoes successive nuclear divisions to give rise to free nuclei
  • The number of free nuclei formed before cellularisation varies greatly
  • Seeds are the final product of sexual reproduction in angiosperms, often described as fertilised ovules
  • Mature seeds may be non-albuminous or ex-albuminous
  • Integuments of ovules harden to form protective seed coats
  • Integuments of avules harden as fough protective seed nais
  • Seeds offer several advantages to angiosperms. They provide better adaptive strategies for dispersal to new habitats and help the species to colonise in other areas. Seeds have sufficient food reserves to nourish seedlings until they are capable of photosynthesis on their own. The hard seed coat provides protection to the young embryo. Being products of sexual reproduction, seeds generate new genetic combinations leading to variations
  • A recent record of a 2000 years old viable seed is of the date palm (Phoenix dactylifera) discovered during the archaeological excavation at King Herod's palace near the Dead Sea