Answer: Evolutionary
Explanation:
Evolution of the male and female reproductive organs is necessary for the advancement of mating strategies that range from simple to complex living beings. This is a kind of adaptation those which have phenotypic characteristics favourable to attract the mates will reproduce the offspring. These traits will be passed on to the progeny and evolution of the species will take place.
Structure- since if we didint have it we would be a blob of meat
The right answer is <em>Bacillus.</em>
The pH-sensitive green fluorescent dye conjugates (available for <em>E.coli</em> and <em>Staphylococcus aureus</em>), give an accurate and faster results than other phagocytosis assay.
These conjugates are non-fluorescent in the extracellular medium (at neutral pH), but fluoresce will be brightly green at acidic pH such as in phagosomes, which makes it an ideal tool for phagocytosis assay.