Answer: The correct answers for the blank are-
Eukaryotes and multicellular.
Plants and animals are multicellular organisms as they are made up of many cells.
They both are also eukaryotic organisms as their cells have well defined nucleus, which contains the genetic material ( DNA) and also they have membrane bound sub-cellular compartments ( also called cell organelles such as mitochondria, golgi complex, endoplasmic reticulum) in their cell.
Thus, Eukaryotes and multi-cellular are the right answers for both plants and animals.
