LabBench Activity Plant Pigments and Photosynthesis

In all photosynthetic organisms, organic pigments exist to harvest the light energy.

Bio 113 Absorption Spectrum of Plant Pigment Lab Report

This process is also affected by the temperature surrounding the plant (the species of plant we experimented with, pond weed, photosynthesised best at around 20 degrees centigrade.) Light, temperature & CO2 are known as limiting factors, and each is as important as the next in photosynthes...

The process of photosynthesis provides plants with the food and energy they need to grow.

Plant Pigments and Photosynthesis ..

The occurrence of photosynthesis is very important to us as humans, because it provides us with the oxygen we need to breathe and plants are at the bottom of every food-chain and so without them, I would collapse....

Through reading various books and web pages it was made clear that carbon dioxide is definitely one of the raw materials needed for photosynthesis, but I wanted to see whether this is actually true and if carbon dioxide is taken away completely will the plant photosynthesize at all.

Photosynthesis and Chromatography Lab

You need to create what is called a Ginger Beer Plant. Put 15g of general purpose dried yeast into a large jar or bowl, add 300mL water, 2 teaspoons ground ginger and 2 teaspoons sugar. Cover with a sheet of cling film and secure with a rubber band. Each day, for seven days, add 1 teaspoon of ginger and 1 teaspoon of sugar to the mixture in the jar. Now strain the mixture through a piece of fine muslin and add the juice of two lemons to the liquid. Add 50g or sugar to the liquid and make up to 4.5 litres with cold water, stirring to dissolve the sugar. Bottle into a plastic bottle Keep for 7-10 days when the ginger beer is sparkling and ready for drinking.

Plant Pigments and Photosynthesis - Castle High School

This quote shows that photosynthesis is the most essential part of the exchange between humans and plants because it produces all the resources we need.

Plant Pigments and Photosynthesis

» The increased CO2 levels cause an increase in the rate of photosynthesis and an increase in the uptake of CO2
» This leads to a acidification in the deeper waters due to the fact that CO2 is a crucial component on the ocean's natural buffer ultimately affecting the whole oceanic ecosystem
» The increased levels of atmospheric CO2 are also affecting the photosynthetic phytoplankton
What's the Benefit?
» Although increased CO2 seems to be a major problem in today's modern society, people are utilizing waste CO2 in productive ways rather than contributing to the carbon footprint

» This is especially useful in the field of agriculture, where farmers are using the increased CO2 to produced larger and more fruitful crops than ever before
» Due to the increased CO2 we are also seeing an increase in almost all categories in regards to the size of plants from the size of the leaves to the height, which is evident from the table below

RGR: Relative Growth Rate
LAR: Leaf Area Ratio
NAR: Net Assimilation Rate (Measure of a plant's dry mass)
What's the Benefit?

Plant Pigments & Photosynthesis Lab

The result of two light reactions is a total of six oxygen molecules (6 O2) released into the air as byproducts and 12 NADPH2 (24 H) carried over to the dark reaction of photosynthesis....

LabBench Activity Dissolved Oxygen and Aquatic Primary Productivity

Hydroponics is a method of growing plants without soil. Plants are simply placed in water with the necessary chemicals. As plants are deprived of support from the ground, they will fall down. To support the plants, an inert material like expanded clay pebbles is used in a pot in the tank (figure 5). Before inserting a plant in a hydroponic system, you must carefully remove all soil from the roots otherwise bacteria will putrefy them.
For many houseplants you can use tap water. Though, particularly for vegetables, it is advised to add appropriate nutrients. This cultivation method has the advantages of both requiring less frequent waterings and using very little water. With this system you can grow nearly any houseplant or vegetable. Hydroponics is useful also to show what nutrition plants need.
1 - Place some houseplants in hydroponics.
2 - Try hydroponics with vegetables and find the suitable nutrients.
Hydroponics in the Classroom
Hydroponics Module
Bradley Hydroponics
Growing plants without soil
To teach orphaned children how to grow their own food with hydroponics (gardening that uses very little water).
Organic Greenhouse Vegetable Production
Internet keywords: hydroponics classroom.