Tag Archives | Plant Anatomy

Sculpture Types that Ornament both Pollen and Spore | Plants

The following points highlight the nineteen main sculpture types that ornament both pollen and spore. The sculpture types are: 1. Chagrenate 2. Psilate 3. Spinula 4. Spina 5. Pilum 6. Verruca 7. Gemma 8. Clava 9. Baculum 10. Scabrate 11. Rugulate 12. Striate 13. Cicatricose 14. Reticulate 15. Corrugate 16. Foveolate 17. Fossidate 18. Canaliculate 19. Echinate. Sculpture Type # [...]

By |2016-12-12T06:55:54+00:00December 12, 2016|Pollen and Spore Walls|Comments Off on Sculpture Types that Ornament both Pollen and Spore | Plants

NPC Classification of Pollen and Spore Wall | Plants

NPC is an artificial system of classification of pollen and spore based on the three features of aperture only, i.e. number, position and character. Erdtman and Straka (1961) proposed NPC classification and palynologists all over the world accepted it. According to NPC system each pollen grain has an arithmetic cardinal number consisting of three digits. The first digit reveals the [...]

By |2016-12-12T06:55:54+00:00December 12, 2016|Pollen and Spore Walls|Comments Off on NPC Classification of Pollen and Spore Wall | Plants

Growth of Cell Wall in Plants | Botany

Growth of cell wall involves the growth in surface area as well as growth in thickness. Normally, the entire cell wall grows. Localized growth occurs in fibres, root hairs, tracheids and pollen tubes. A new primary wall grows in surface area. The wall expands due to the turgor pressure exerted on the walls by the protoplast. Turgor pressure is developed [...]

By |2016-12-12T06:55:54+00:00December 12, 2016|Cell Wall|Comments Off on Growth of Cell Wall in Plants | Botany
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