1. Colegio San Mateo<br />LABORATORY<br />SANTIAGO SCHMIDT<br />Santiago Álvarez, Santiago Rojas, Edgar Flórez, Esteban Cuervo<br />9-A<br />2010-2011<br />1. INTRODUCTION<br />The lentils mostly grow until 0.45 meters which can’t resist frost conditions. It is self-fertile, can fix nitrogen. It grows easily in sand, loam, and clay because it requires well-drained soil, and also it can grow in poor soil in nutrition, also can´t grow in shade, and it requires dry or moist soil. Kingdom: Plantae, Division: Magnoliophyta, Class: Magnoliopsida, Order: Fabales, Family: Fabaceae, Tribe: Fabeae, Genus: Lens, Species: Lens culinaris.<br />The density of population could be find of affected in two ways: dependent and independent. It is set as dependent when the death rate of a given population increase as the density of population also does, while the birth rate decreases, such events occurs because of some factors which are: intra specific competition, space, predation, and parasites. <br />When the density of population is set to be independent means the contrary of the depending one, which means that the birth or death rate does not change or get modified with the changing of the density of population. Some factor that affect this kind of growing, population would be the ones that are called external (environmental), like weather, soil’s PH, humidity, resources, and altitude.<br />2. OBJECTIVE<br />2.1 To determine the density factors that could affect the growing of a certain population in a determined space.<br />3. PROCEDURE <br />First of all, soil is put in its respective plastic cups. Those 15 plastic cups are divided in three groups of 5 each.<br />In the first group of five, one seed of lentil is planted in each plastic cup, and make holes in the bottom of cup. <br />In the second group of five, five seeds of lentil are planted on each plastic cup, and also make holes in the bottom of each cup. <br />In the second group of five cups, is plants 5 lentils per each plastic cup, and also make some holes at the bottom of each cup<br />In the third group, ten lentils are planted in each of the five plastic cups in these ones also make holes at the bottom of each cup.<br />Then observe the growth of the three groups in which you will give to each of them different tratmentents<br />Record the information in a graph that shows growing population vs the treatment of each group<br />Then observe the growth of the three groups in which you will give to each of them different tratmentents<br />Finally draw conclusions about the least and the bigger population which treatment is the best? And compare the hypothesis with the results<br />4. HYPOTHESIS<br />4.1 Which plastic cup with lentils will have the biggest lentils?<br /> The plants which are alone in the plastic cups will grow larger, because they does not have to compete with other plants, and also have more nutrients due to the same fact, so will grow larger. <br />5. RESULTS<br />DateR1 lentil5 lentils10 lentilsApril 1314.23.53.121.43.8431.84.82.5414.51.8502.52average1.683.422.68<br />The ones that grew the most were the plastic cups with five lentils, and the ones that grew the least were the plastic cups that grew the least.<br />