The Effects of Light.docx - The Effects of Light Wind and...

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The Effects of Light, Wind and Humidity on Epipremnum aureumDate: November 14, 2016Submitted To: TemesvariPurpose
To investigate how different factors, affect the rate of Transpiration of the Golden Pothos (Epipremnum aureum).TheoryAll plants fall under the kingdom Plantae. The kingdom Plantae can be broken up into various phylum, however the phylum Angiospermophyta dominate over the others. The “Angiosperms” can be broken into two major groups, Monocots and the Dicots. Monocots and Dicots vary in seed, leaf, stem and root structure, however both the Monocots and Dicots contain a Dermal, Vascular and Ground tissue system that make up each plant organ. Both also contain specialized cells known as Parenchyma cells, Collenhyma cells and Sclerenchyma cells. Parenchymacells are thin and flexible and perform metabolic functions for the plant. Collenchyma cells have unevenly thick primary walls and provide flexible support for the plant as it matures. Sclerenchyma cells have thick secondary walls strengthened by ligin. These cells when dead form a hard skeleton that supports the plant. The Golden Pothos or Epipremnum aureum, is an angiosperm, belonging to the class “Monocot”. The Epipremnum aureum contains a root with vascular tissues consisting of central pores surrounded by a ring of Xylem and Phloem, a stem consisting of vascular bundles that are scattered and leaves that contain veins in a parallel structure.Transpiration in plants refer to “the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere”1. The water that is released into the atmosphere is replaced by the Xylem. The Xylem is a type of transport tissue composed of water conducting cells that transport water and minerals from the soil, upwards towards the leaves. The Xylem tissue is composed of Sclerenchyma cells called tracheid and vessel element cells. Tracheids are long and thin and contain tapered ends where vessel 1 Perlman, H. (Ed.). (2016, October 27). Transpiration - The Water Cycle. Retrieved November 17, 2016, from

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