An alias type based on a SQL Server system data type. Alias data types are created with the CREATE TYPE statement before they can be used in a table definition. The NULL or NOT NULL assignment for an alias data type can be overridden during the CREATE TABLE statement.
The measure of photochemical efficiency is made by meauring the amount of oxygen produced by leaves following exposure to various wavelengths. It is evident from these absorption and output plots that only the red and blue ends of the visible part of the electromagnetic spectrum are used by plants in photosynthesis.The reflection and transmission of the middle of the spectrum gives the leaves their green visual color.he measured rate of photosynthesis as a function of absorbed wavelength correlates well with the absorption frequencies of chlorophyll a, but makes it evident that there are some other contributors to the absorption.
Key content 1. photosynthesis is a cellular process through which organisms capture light energy from the sun and use it to generate and store energy. 2. cellular respiration releases stored energy in glucose, allowing the organism to function. 3. Light is required for photosynthesis to occur, although parts of photosynthesis can happen in the absence of light. 4. photosynthesis happens in the chloroplasts, which con-tain chlorophyll. 5.