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Sumario 2.9 Estructuras Reproductivas: Cono y Estrobilo

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ESTRUCTURAS REPRODUCTIVAS: CONOS Y ESTROBILOS


CARACTERISTICAS fecundara para formar el embrión.

Estructura reproductiva de las gimnospermas, es
verdoso antes de ser fecundado y se lignifica una
vez que se ha formado la semilla.
Compuesto por traqueidas, células cribosas y
albuminosas.




ESTRUCTURA FEMENINA
Insertos en el Raquis o eje central del
cono/estróbilo se encuentran las escamas
ovuliferas (rama modificada en las cuales se
encuentran los óvulos con su megaespora) y las
MORFOANATOMÍA brácteas tectrices.

ESTRUCTURA MASCULINA
Insertos en el Raquis o eje del estróbilo/cono se
encuentran los microesporofilos (o brácteas a
nivel morfológico), que contienen los sacos
polínicos o microsporangio, en donde se produce
el polen o las microsporas.




ESCAMA OVULIFERA




POLÉN DE GIMNOSPERMA
Posee dos alas para viajar grandes distancias,
cuenta con dos núcleos, uno que formara el tubo
polínico para llegar al ovulo, y otro que lo




DANI PONCE, INGENIERÍA FORESTAL, 1ER SEMESTRE.
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