¿Qué efecto tiene la forma física de un fertilizante en el crecimiento de una planta?

I. INTRODUCTION

Plants produce their own food, mainly in their leaves, by a process called photosynthesis. This food-making process uses light, a form of radiant energy, to change carbondioxide gas and water into oxygen and glucose (a type of sugar needed by plants and animals). Plants can change the sugar into energy, which can be used for all plant processes necessary for lifeand growth.

Plants have tube-shaped structures called xylem that carry sap from the roots to other parts of the plant. Sap is a liquid solution (a mixture of a liquid with substancesdissolved in it) containing nutrients including glucose. When the stem connected to a flower is cut, sap can continue to move through the xylem if the cut end is placed in a liquid. The longevity (thelength of life) of a cut flower depends on several things, one being the continued movement of sap to the flower. Without sap, cut flowers will wilt (become limp or droopy).

II. PROBLEM

Whateffect does a glucose solution have on the longevity of cut flowers?

III. HYPOTHESIS

Cut flowers longevity increases as concentration of glucose increases. Excess of glucose concentration harmthe cut flowers longevity.

IV. METHODOLOGIES

In order to carry out the study it were used the following materials:

▪ 20 cuts flowers (daisies)

▪ 4 glass jars▪ Garden shears

▪ Distilled water

▪ Glucose solution

The experiment was conducted following various steps:

1. Twenty (20) cuts flowers(daisies) were place four (4) different jars. Each jar had five (5) cut flowers.

2. Twenty (20) cuts flower (daisies) were cuts at the same height with garden shears.3. Distilled water was poured in each one of the four (4) jars

4. The four (4) jars were divided in four (4) groups as follows:

Group A – it was...