Explanation: Phytoplanktons can be defined as the microscopic organisms found on the top of the water bodies that has the ability to trap solar energy and make food.
This ability of the organism to make its own food can be defined as photosynthesis which is an autotrophic mode of nutrition.
Here, the whale differs from the phytoplankton in terms of mode of nutrition. Whale has heterotrophic mode of nutrition as it depends on other organism for its food. It basically feeds on the smaller fishes for its survival.
While passing through renal tubules, water and a lot of other substances are reabsorbed making filtrate concentrated. This also gradually results in an increase in the concentration of urea as it is not reabsorbed like water or glucose. Some substances like K+, H+ are also secreted (not urine).
Psychrotrophs are those bacteria which can tolerate cold temperature and have optimum growth above 15 degree Celsius.
Halophiles prefer high salt concentration.
Mesophiles prefer temperatures with a average of 37 degree Celsius.
Anaerobes grow in absence of oxygen.
In the given experiment, none of the bacterial cultures were placed in saline or anaerobic conditions. So, the bacterial species is not an anaerobe or halophile.
Again the cultures did not show growth at 37 degree celsius so they are not mesophiles.
Maximum growth at 22 degree celsius and a little growth in refrigerator make it obvious that the species is a Psychrotroph.
