New cells generate from (a) bacterial fermentation (b) regeneration of old cells (c) pre-existing cells (d) abiotic materials
(c) According to the biogenic theory, new cells can only arise from pre-existing cells. Only complete cells, in favourable conditions, can give rise to new cells.
Define a taxon. Give some examples of taxa at different hierarchical levels.
What are the steps involved in formation of a root nodule?
Define oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?
What are the steps involved in formation of a root nodule?
What is the difference b/w regenerating cells&pre-existing cells