Plants and animals are:

Unicellular

Multicellular

Vertebrates

The answer is that they are multicellular!

Explanation:

The reason for this is because there are many different specialized cells in plants and animals that allow them to perform different functions specifically either for tissues, organs, or anything that helps with the functioning of the organism to survive. Hence the name "multi" in multicellular means having multiple cells serving different functions that an organism would need for survival.

Explanation:

Unicellular means

UNI = one CELLULAR= has cell(s)

this must mean that the organism has one cell. And we know that plants have multiple structures, so they must have multiple cells! This also applies to animals, they have more than 1 cell, because of their many structures. So this ELIMINATES unicellular.

Vertebrates, are animals that HAVE backbones. And we know that plants DO NOT have backbones, but animals do. This question is asking about PLANTS AND ANIMALS so this ELIMINATES vertebrates.

So this means that the answer is multi-cellular

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