If mitotic cell division is the only way a particular species of a single celled organisms can reproduce it is most likely that

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If mitotic cell division is the only way a particular species of single-celled organism can reproduce, it is most likely that

(1) mutations can not occur in this species.

(2) the rate of evolution in this species is slower than in one that reproduces sexually.

(3) the number of organisms of this species in an area will remain constant.

(4) this species belongs to the animal kingdom.

The correct answer is: the rate of evolution in this species is slower than in one that reproduces sexually.

Explanation:

If a unicellular organism only reproduces by mitotic cell division, its evolution rate is going to be slower than an organism that reproduces sexually because sexual reproduction plays an important role in generating mutations that could be positive for the organism and its offspring.

Mutations would occur all the same in this cell because errors can happen in the regulatory mechanisms in every process of cell division.

The number of organisms of this species would not remain constant as mitotic cell division generates 2 cells out of 1, so the number of organisms should always be ascending.

Clearly, a unicellular organism that does not reproduce sexually ISN'T in the animal kingdom. All animals are eukaryotic multicellular individuals that reproduce sexually.