The liver PK isozyme (L form) is regulated by glucagon

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#Id: 10696

#XL - R Botany

Dicot stem

Epidermis ; 

Cutinized, bears multicellular hairs.

Cortex ;

It is differentiated into hypodermis, general cortex and endodermis.

Hypodermis is Collenchymatous

Pericycle ;

Above vascular bundle it is Sclerenchymatous

Vascular bundles ;

Conjoint, Collateral, Endarch and Open

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#Id: 10697

#XL - R Botany

Monocot stem

Epidermis ; 

Consist of Parenchyma cells and covered with cuticle.

Hypodermis ;

Cells of Hypodermis are Sclerenchymatous

Vascular bundles ;

They lie Scattered in the Ground tissue.

Each Vascular Bundle is surrounded by 2 or 3 layered Sclerenchymatous sheath called as Bundle sheath.

Conjoint, Collateral, Closed and Endarch 

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#Id: 10698

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Dicot leaf (dorsiventral leaf) 

Epidermis ;

The upper and  lower surfaces are covered by the epidermis.

Cells of epidermis are  Parenchymatous.

Stomata restricted to lower surface (HYPOSTOMATIC) 

Outer walls thickened and cutinized.

Mesophyll ;

Palisade (upper)

Spongy (lower)

Vascular tissue ;

Conjoint, Collateral and Closed surrounded by Bundle sheath

Xylem (Adaxial) and Phloem (Abaxial)

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#Id: 10699

#XL - R Botany

TLS Online TPP Program

#Id: 10700

#XL - R Botany

Monocot leaf (Isobilateral leaf) 

Epidermis ;

Consists of upper and lower epidermis.

Both the layers are cutinized.

In some grasses they are large with thin, flexible walled cells called as Motor or Bulliform cells

Mesophyll ;

Not differentiated into palisade and spongy.

Made of parenchyma cells which have Chloroplasts.

Vasular bundle

Arranged in parallel manner.

Conjoint, Collateral and Closed and enclosed by a bundle sheath Xylem (adaxial) and Phloem (abaxial)

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#Id: 10701

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