The interaction is seemingly neutral for one of the organisms. For example, a barnacle attached to a whale can travel thousands of miles collecting and filtering food from the moving water. The whale doesn't seem to be affected by the little hitchhikers.
Answer: The correct answer for the fill in the blank is- May be placed in the Plantae kingdom.
An organism that produces food by photosynthesis can belong to three kingdoms that are Monera ( example- cynobacteria) , Protista ( example- algae) and Plantae ( example- green plants).
Thus, it is not necessary that the organism must be placed in Plantae kingdom as it may belong to any of these three.
Organisms belonging to Animalia kingdom do not perform photosynthesis.
Thus, second option is the right answer.
Fixation
Nitrogen is converted from atmospheric nitrogen (N2) into usable forms, such as NO2-, in a process known as fixation. The majority of nitrogen is fixed by bacteria, most of which are symbiotic with plants. Recently fixed ammonia is then converted to biologically useful forms by specialized bacteria
I’m pretty sure it’s D! Brainlyist ???
