What+is+Autotrophy?

=﻿What is Autotrophy? =



("Autotrophy and photosynthesis," )

=An autotroph, or producer, is an organism that produces complex organic compounds (such as carbohydrates, fats, and proteins) from simple inorganic molecules using energy from light by photosynthesis. Chlorophyllic plants are primary producer. When exposed to sunlight, they manufacture their proper organic materials from exclusively mineral substances. These plants ensure their autotrophy through photosynthesis. (Jamm, Dagher, Ghorayeb, & Hajjar, 1999) = = = hawraa: water and miniral substances.
 * ==**__What are the necessary substances for the nutrition of chlorophyllic plants?__**==

**Alia Olivia: NPK minerals and water.**
__Samia El Kurdi:__ The necessary substances for the nutrition of chlorophyll plants are water and mineral substances.
 * __How to determine the needs of minerals of a green plant?__**

hawraa: by experiments done on plants, where in each experiment, we would have a conrol that is provided with all the needed minerals, then the other experimental plants would have all the needed minerals except one of the minerals would be missing, and in each experiment ,a different type of minerals would be removed, so that the results would show the effect of abscence of each one of the minerals and thus we would know the quantity needed and the function of each mineral precisely. __Samia El Kurdi:__ The needs of minerals of a green plant are determined by experimenting different minerals on the plants and testing the effects of each one thus monitoring the mineral that best suits each plant. __Samia El Kurdi:__ The residue contains carbon monoxide. Jammal, N, Dagher, J, Ghorayeb, L, & Hajjar, Z. (1999). Life science first year secondary. Sin-El-Fil, Lebanon: national center for research and pedagogical development.
 * ==**__Due to the burning of leaves or a piece of liver, a black residue is formed. What does this residue contain?__**==
 * __hawraa:__ carbon monoxide.**
 * __References:__**

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