Prepared as a part of Histology syllabus for B.Sc. First Year students.

1. THEORIES OF HISTOLOGICAL
ORGANIZATION OF ROOT
AND SHOOT APICES

2. SHOOT APICAL ORGANIZATION THEORIES:
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3. 1. APICAL CELL THEORY
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4. 2. HISTOGEN THEORY:
• HANSTEIN 1868
(a)DERMATOGEN
PERIBLEM
PLEROME

5. 3. TUNICA-CORPUS THEORY.
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10. THEORIES OF ROOT APICAL ORGANIZATION
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A- Raphanus sativus B- Zea mays

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