Observación de cromoplastos en la zanahoria

Práctica:


Materiales:


  • Zanahoria
  • Lápiz gris
  • Tijera o Gillette 
  • Gotero con agua
  • Pinzas
  • Placa porta
  • Placa cubre




Procedimientos: 

Hacer un pequeño corte transversal, y proceder a desechar luego cortar por  segunda ver y este corte que debe ser muy fino, si es necesario se debe realizar varias veces, colocar la muestra sobre un portaobjetos y cubrir con una laminilla comprimir suavemente con los dedos para eliminar las burbujas que se forman. Observar  primeramente con diafragma cerrado en 10X y luego en 40X.

Observación 

Tomar la muestra fue muy difícil debido a que el corte debía ser extremadamente fino, lo que se observa son pequeñas celdas deformes unidas y cromoplastos.
En el objetivo de 10X solo pude apreciar, las paredes celulares, los cromoplastos que eran de un naranja muy bajito, los residuos, burbujas de aire.
En 40X se puede observar las células que son ovaladas, transparentes y los cromoplastos que son como manchas de color naranja que están en cada célula  dándoles el color que caracteriza a las zanahorias.



10X 

40X

  

12 comentarios:

  1. puedes poner un dibujo de un almidon de una papa

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    Respuestas
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  2. También puede ser de la beterraga

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