In this article we will discuss about the ergastic substances present in the cells of a plant:- 1. Reserve Materials 2. Secretory Materials 3. Excretory Materials or Waste Products. 1. Reserve Materials: Reserve materials are those non-living inclusions which are directly concerned with the nutrition of plants, i.e. they serve as plant food matters. They are again of three types, [...]
The following points highlight the three important reserve materials found in plants. The reserve materials are: 1. Carbohydrates 2. Fats, Lipids and Oils 3. Nitrogenous Organic Materials. Reserve Material # 1. Carbohydrates: These are made up of C, H and O. As a result of oxidation they release energy which is utilized by protoplasm. Main carbohydrates are as under:- (a) [...]
Structural Organization of Plant Cell! So far as the structural organization is concerned, all organisms belong to either of the two categories — the prokaryotes, including bacteria and blue-green algae, and the eukaryotes, comprising all other plants and animals. The French microbiologist Edward Chatton first used these terms in 1928. Prokaryotes (pro: before; karyon: nucleus) lack a membrane-bound definite nucleus. [...]