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Anatomy of Flowering Plants — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYAnatomy of Flowering Plants5 Marks
Question
Draw illustrations to bring out the anatomical difference between: Monocot stem and Dicot stem.
✓

Answer

S.No.
Monocot Stem
Dicot Stem
1.
 Dumb bell-shaped guard cells in stomata occurring in epidermis. Kidney-shaped guard cells present in stomata in epidermis.
2.
 Kidney-shaped guard cells present in stomata in epidermis. Ground tissue differentiated into cortex, endodermis, pericycle and pith.
3.
 The vascular bundles are scattered in ground tissue many in number and vary in size. The vascular bundles are arranged in a ring.
4.
Normally, no secondary growth occurs, few exceptions, e.g., Aloe, etc.
 Secondary growth takes place
5.
 The primary vascular tissues remains functional throughout the life of the plant The older vascular tissues cease functioning after sometimes are replaced by new ones
6.
 There is little increase in size. The stem also increase in diameter with age due to secondary growth.
 

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