The feature not found in monocot …

Roots

• They have an adventitious root system
• Pith is large and conspicuous
• The number of xylems is 6 or more
• Secondary growth is absent in monocots due to an absence of cambium

Stem

• No cambium and so no secondary growth in stem
• Stem usually hollow
• Vascular bundles in the stem are scattered and numerous
• Phloem parenchyma is absent
• Pith is absent
• Vascular bundles are surrounded by a sclerenchymatous bundle sheath
• Pericycle is absent

Leaves

• The leaves are sessile i.e it is directly attached to its base (without stalk)
• They have parallel venation
• Mesophyll is not differentiated into spongy and palisade cells

Flowers and seeds

• Seed germination is hypogeal
• They have a single cotyledon
• Flowers are incomplete and trimerous(floral parts are in the number of threes)
• The pollen grains have a single furrow or pore