photosynthetic

Influence of light intensity on the Ceratophyllum ‘s

photosynthetic rate

Name:negar mir sharifi

Student number:212656302

Lab section:D4 The TA’s name: Anahit

Introduction

The purpose of this experiment was to determine the influence of light- intensity

on the photosynthetic rate of Ceratophyllum, which is an aquatic and high oxygen

producer plant. The alternative hypothesis was that the rate of photosynthesis

increases as the distance of the light decreases. This is because light energy can

excites chlorophyll molecules more clorophyll mulcoulse as the distance of the light

decreases. Photosynthesis is a process in which the energy of light is used to

produce organic molecules. In this process Oxygen is released; therefore the rate of

photosynthesis can be calculated by measuring the rate of oxygen production per

unit mass (ml/hr/gr) (Taras et al.2013). This experiment was conducted in order to

determine the photosynthetic rate of 14 species of plankton algae, which were

exposed to the different light intensity. The rate of photosynthesis was calculated by

using different methods such as measuring carbon dioxide consumption and oxygen

production during the certain amount of time. It was found that the rate of

photosynthesis increases as the light intensity increases (Emerson and Green 1934).

This was an important scientific experiment because it might be able to solve the

food shortage problem partly for