Organisms obtain their food materials in different ways which are of two types generally. They are: A) Autotrophic nutrition B) Heterotrophic nutrition. A) Autotrophic nutrition Gr.autos=self, trophein=to nourish. Also known as holophytic. In this type, organisms synthesize their own nutrients from inorganic constituents of the environment. Typically found in all … Read more
The five kingdom system of classification was proposed by R.H Whittaker in 1969. This classification is based on following criteria: Complexity of cell structure- prokaryote and eukaryote. Complexity of organism’s body- unicellular and multicellular. Mode of obtaining nutrition– autotrophs and heterotrophs. Life style i.e. producers, consumers and decomposers. Phylogenetic relationship. The five kingdoms are Monera, … Read more
S.N Photosynthesis Respiration 1. An anabolic process. A catabolic process. 2. Complex organic food is synthesized from simple inorganic food. Complex organic foods are oxidized into simple inorganic forms. 3. Carbon dioxide is absorbed. Carbon dioxide is evolved. 4. Oxygen is evolved. Oxygen is absorbed. 5. It occurs in presence of light. It occurs … Read more