In this article we will discuss about the common parts of callistophyton plants. Stem: T.S. of Callistophyton stem shows a central angular parenchymatous pith surrounded by eustele. The stele is composed of a ring of 5 to 13 axial bundles (sympodia) forming leaf traces in 2/5 arrangement. Both mesarch and exarch primary bundles are reported, which are surrounded by thick [...]
List of twenty one plants with their attractive features:- 1. Oldest Living Plant 2. Oldest Living Fossil 3. World's most Massive Living, Things 4. World's Largest Tree Crown 5. World's Largest Living Organisms 6. World's Tallest Tree 7. World's Heaviest and Hardest Wood 8. World's Softest and Lightest Wood 9. World's Smallest Flowering Plant 10. Smallest Fruit 11. Largest Fruit [...]
Read this essay to learn about the theories of structural development of root and shoot apices:- 1. Apical Cell Theory 2. Histogen Theory 3. Tunica-Corpus Theory. Essay # 1. Apical Cell Theory: In cryptogams like algae, bryophytes and pteridophytes the solitary apical cell found to be constantly present leads to the whole process of growth. Many researchers believe that the [...]