Pteridophytes (Gr. pteron= feather, phyton = plant) constitute the most primitive seedless vascular plants that reproduce by means of spores. Hence, they are known as 'vascular cryptogams'. Haeckel (1866) called these groups of plants as "Pteridophytes" because of their pinnate or feather like fronds (leaves). Like reptiles (first true land animals that evolved after amphibian) they are considered as the [...]
Read this article to learn about Saccharomyces: Structure, Nutrition and Life Cycle ! Kingdom - Mycota - Division - Eumycota Sub- division - Ascomycotina - Class - Hemiascomycetes Order - Endomycetales - Family - Saccharomycetaceae Genus - Saccharomyces - Species - cerevisiae Saccharomyces or Yeast is saprophytic unicellular eukaryotic fungus which grows on sugary solution, grapes etc. Structure of Saccharomyces: [...]
Eight main sources of solid wastes are as follows: 1. Municipal solid wastes 2. Industrial Solid Wastes 3. Mining solid wastes 4. Fertilizers 5. Pesticides and Biocides 6. Excretory products of humans and livestock 7. Electronic wastes 8. Hospital Wastes. 1. Municipal solid wastes: These are solid wastes from home, offices, stores, schools, hospitals, hotels etc. These domestic solid wastes [...]