Acell contains
20% solute. if it is
placed in a
solution with 35%
solute, what will
happen to the
cell?

Cell will shrink

Explanation  

As the dissolved solute are much more outside the cell, so the water inside the cell will eventually flow outside so as to maintain equilibrium,causing shrinkage of cell. The ability of a cell to divide or function will reduce because of water loss.  

This phenomenon is seen in case of hypertonic solution. The total molar concentration of dissolved solute is more than another solution or more than the concentration of solution present in cell.

Correct D) Competitive exclusion

Carrying capacity of an ecosystem may be defined as the total number of organism it can support. Biotic and abiotic factors such as available space, water, food and shelter  act as a limiting factor, which determine how many organism can live within a ecosystem.

The competitive exclusion principle states that two species that compete for same resources cannot stably coexist.

One among the two competitor will always have slight advantage over the other, it leads to extinction of other competitor or lead to an evolutionary shift of the inferior one to a different ecological niche. Therefore, competitive exclusion have least effect on the carrying capacity of an ecosystem.