féconder avec du pollen - significado y definición. Qué es féconder avec du pollen
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Qué (quién) es féconder avec du pollen - definición

A TUBULAR CELL PROJECTION THAT IS PART OF A POLLEN TUBE CELL AND EXTENDS FROM A POLLEN GRAIN.
Pollen tubes; Pollen-tube
  • 223x223px
  • angiosperm ovule
  • Mechanism to prevent self pollination and allowing compatible pollen to grow a pollen tube for fertilization to take place
  • SEM image of pollen tubes growing from lily pollen grains.
  • Cross section of ovule in gymnosperms and angiosperms
  • Gymnoperms in perspective on the phylogeny
  • Bee pollinating a sunflower. Pollen is transferred from anther of one plant to stigma of another as bee collects nectar
  • Pollen on stigma

pollen         
  • European honey bee]] carrying pollen in a [[pollen basket]] back to the hive
  • Closeup image of a cactus flower and its stamens
  • Pollen microspores of ''[[Lycopersicon esculentum]]'' at coenocytic tetrad stage of development observed through oil immersion microscope; the chromosomes of what will become four pollen grains can be seen.
  • ''[[Diadasia]]'' bee straddles flower [[carpels]] while visiting yellow ''[[Opuntia engelmannii]]'' [[cactus]]
  • rockrose]].
  • Pollen Tube Diagram
  • redbud]] pollen. Scanning electron microscopes are major instruments in palynology.
  • Tulip [[anther]] with many grains of pollen
FINE TO COARSE POWDER CONTAINING THE MICROGAMETOPHYTES OF SEED PLANTS
Pollens; Pollen grain; Exine; Colpus; Porate pollen; Echinate; Extine; Harmomegathy; Microsporogenesis; Pollen grains; Sulcate; Monosulcate; Monocolpate; Uniaperturate; Triaperturate; Pine pollen; Echina; Echinae; Harmomegathic; Pollen-grain; Pollen sac (botany); Pollen evidence; Endexine
(pollens)
Pollen is a fine powder produced by flowers. It fertilizes other flowers of the same species so that they produce seeds.
N-MASS
Extine         
  • European honey bee]] carrying pollen in a [[pollen basket]] back to the hive
  • Closeup image of a cactus flower and its stamens
  • Pollen microspores of ''[[Lycopersicon esculentum]]'' at coenocytic tetrad stage of development observed through oil immersion microscope; the chromosomes of what will become four pollen grains can be seen.
  • ''[[Diadasia]]'' bee straddles flower [[carpels]] while visiting yellow ''[[Opuntia engelmannii]]'' [[cactus]]
  • rockrose]].
  • Pollen Tube Diagram
  • redbud]] pollen. Scanning electron microscopes are major instruments in palynology.
  • Tulip [[anther]] with many grains of pollen
FINE TO COARSE POWDER CONTAINING THE MICROGAMETOPHYTES OF SEED PLANTS
Pollens; Pollen grain; Exine; Colpus; Porate pollen; Echinate; Extine; Harmomegathy; Microsporogenesis; Pollen grains; Sulcate; Monosulcate; Monocolpate; Uniaperturate; Triaperturate; Pine pollen; Echina; Echinae; Harmomegathic; Pollen-grain; Pollen sac (botany); Pollen evidence; Endexine
·noun The outer membrane of the grains of pollen of flowering plants.
sulcate         
  • European honey bee]] carrying pollen in a [[pollen basket]] back to the hive
  • Closeup image of a cactus flower and its stamens
  • Pollen microspores of ''[[Lycopersicon esculentum]]'' at coenocytic tetrad stage of development observed through oil immersion microscope; the chromosomes of what will become four pollen grains can be seen.
  • ''[[Diadasia]]'' bee straddles flower [[carpels]] while visiting yellow ''[[Opuntia engelmannii]]'' [[cactus]]
  • rockrose]].
  • Pollen Tube Diagram
  • redbud]] pollen. Scanning electron microscopes are major instruments in palynology.
  • Tulip [[anther]] with many grains of pollen
FINE TO COARSE POWDER CONTAINING THE MICROGAMETOPHYTES OF SEED PLANTS
Pollens; Pollen grain; Exine; Colpus; Porate pollen; Echinate; Extine; Harmomegathy; Microsporogenesis; Pollen grains; Sulcate; Monosulcate; Monocolpate; Uniaperturate; Triaperturate; Pine pollen; Echina; Echinae; Harmomegathic; Pollen-grain; Pollen sac (botany); Pollen evidence; Endexine
['s?lke?t]
¦ adjective Botany & Zoology marked with parallel grooves.
Origin
C18: from L. sulcatus 'furrowed', past participle of sulcare.

Wikipedia

Pollen tube

A pollen tube is a tubular structure produced by the male gametophyte of seed plants when it germinates. Pollen tube elongation is an integral stage in the plant life cycle. The pollen tube acts as a conduit to transport the male gamete cells from the pollen grain—either from the stigma (in flowering plants) to the ovules at the base of the pistil or directly through ovule tissue in some gymnosperms. In maize, this single cell can grow longer than 12 inches (30 cm) to traverse the length of the pistil.

Pollen tubes were first discovered by Giovanni Battista Amici in the 19th century.

They are used as a model for understanding plant cell behavior. Research is ongoing to comprehend how the pollen tube responds to extracellular guidance signals to achieve fertilization.