The right answer is A.
Plant species are particular in their ability to produce oxygen and carbohydrates through photosynthesis. The plant, just like the animals also needs to breathe so that these cells survive, so it is forced to take some of the oxygen and carbohydrate produced by photosynthesis to operate these cells through cellular respiration.
Increasing the stimulation up to the maximal stimulus
Heterogeneous, because you can take out or sort the ingredients in all three into separate parts
<h2>Receptors for hearing are in the cochlea; receptors for balance are in the vestibule.</h2>
Hope this will help....
