Escherichia coli (commonly abbreviated E. coli) is a Gram-negative, rod-shaped bacterium that is commonly found in the lower intestine of warm-blooded organisms (endotherms).Most E. coli strains are harmless, but some serotypes can cause serious food poisoning in humans.The harmless strains are part of the normal flora of the gut, and can benefit their hosts by producing vitamin K2, and by preventing the establishment of pathogenic bacteria within the intestine.ost E. coli strains are harmless, but some serotypes can cause serious food poisoning in humans. The harmless strains are part of the normal flora of the gut, and can benefit their hosts by producing vitamin K2, and by preventing the establishment of pathogenic bacteria within the intestine.
In flowering plants the gametophytes are very reduced in size, and are represented by the pollen and the embryo sac. The sporophyte produces spores (hence the name) by meiosis, a process also known as reduction division that reduces the number of chromosomes in each spore mother cell by half.The resulting meiospores develop into a gametophyte.n flowering plants the gametophytes are very reduced in size, and are represented by the pollen and the embryo sac. The sporophyte produces spores (hence the name) by meiosis, a process also known as reduction division that reduces the number of chromosomes in each spore mother cell by half.
The sporophyte produces spores which are dispersed and, when conditions are right, they'll germinate and grow into gametophytes. Spores (and thus, gametophytes) are usually haploid, like sperm in men and eggs in women. Seeds, on the other hand, are diploid.Seeds tend to be much more complicated than spores.There's an embryo within a seed which is usually surrounded by lots of stored fats, carbohydrates, proteins, and other stuff the seedling will need to have a good chance at success. seed is a shell full of nutrients and an organism that helps a plant grow, they enjoy soil, and grow a stem well root system right away. A spore is tiny, many are dropped at a time, and they blow in the wind until they find a target, They must grow into a root system first before a fruit body.