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  • Stuck here, help me understand: Cortex is the region found between

Cortex is the region found between

  • Option 1)

    epidermis and stele

  • Option 2)

    pericycle and endodermis

  • Option 3)

    endodermis and pith

  • Option 4)

    endodermis and vascular bundle

 

Answers (1)

As learnt in

Stele -

The Stele is the whole central mass of vascular tissue (vascular cylinder) with or without pith surrounded by endodermis. Steler system is started from pteridophytes.

Stele

Stele

- wherein

In order of evolution types of stele are: protostele (most primitive and simple), siphonostele. Solenostele, dictyostele, eustele and atactostele.

 

 

Cortex and its type -

Cortex lies in between epidermis and pericycle which is further divided into hypodermis, general cortex and endodermis-

* Hypodermis - It is collenchyma in dicot stem & sclerenchyma in monocot.

* General cortex - Parenchyma and it stores food.

* Endodermis (starch sheath) - Made up of parenchymatous barrel-shaped. Endodermal cells of roots are known as Casparian strips. 

-

 

 Stele =pericycle+vascular tissue +pith

 

 


Option 1)

epidermis and stele

Correct option

Option 2)

pericycle and endodermis

Incorrect option

Option 3)

endodermis and pith

Incorrect option

Option 4)

endodermis and vascular bundle

Incorrect option

Posted by

Vakul

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