Agriculture notes prepared by IAS Topper for all agriculture based competitive exams-Physiology-Types of Stomata

Types of Stomata

 Based on distribution of stomata

• Apple/Mulberry type = hypostomatic
• Wild lilly type = epistomatic
• Oat type = amphistomatic and Isostomatic
• Potato type = amphistomatic and anisostomatic
• Potamogeton type = astomatic

 Based on stomatal clock

• Equisetum type
• Alfalfa type
• Potato type
• Barely type

 Based on movement

• Photoactive stomata
• Skotoactive stomata
• Hydroactive stomata
• Automatic stomata
• Active and passive stomata

 Based on subsidiary cells arrangement

• Anomocytic type : Ex. Ranunculaceae
• Anisocytic type : Ex. Cruciferae, Solanaceae
• Paracytic type : Ex. Rubiaceae, Magnoliaceae
• Diacytic type : Ex. Caryophyllaceae
• Actinocytic type
• Cyclocytic type

 Based on ontogeny

• Haplocheilic type - guard cells and subsidiary cells originate separately
• Syndetocheilic type – guard cells and subsidiary cells originate from same mother cell