Lab Report On Transpiration

Lab Report

Research Question: How do different wind concentrations affect the length of dye increasing upwards in Apium Graveolens var. Dulce by transpiration, through having a constant wind speed, temperature, humidity and light intensity, at 5 different lengths, with the same amount of time on each length?

Introduction: Transpiration is the process of how moisture is carried and taken in from the roots and to the underside pores of the leaves, where it is then converted into water vapor and released into the atmosphere. Transpiration is essentially the evaporation of water from the pores of leaves, stems or flowers. Water is one of the key essential factors which are required in plants for growth and metabolism, however the amount required is much less in ratio of what is taken in by the roots. The remaining water (99.0%-99.5%) taken in is lost through transpiration.

The surfaces of the leaf are dotted with pores known as stomata; mostly in plants they are numerous on the undersides foliage of the leaf. The stomata are surrounded by guard cells and their stomatal accessories, which are known as the stomata complex, these are responsible for the opening and closing of the pores. Transpiration occurs through the stomatal openings, and can be seen as a necessary “price” related to the opening of the stomata to allow diffusion of Carbon dioxide required for photosynthesis.

Transpiration also helps to decrease the temperature of plants, changing the osmotic pressure of the