Option 1 states that Monera are multicellular. This statement is incorrect because Monera are actually unicellular organisms. Monera includes bacteria, which are composed of a single cell.

Option 2 states that Protista are always multicellular. This statement is incorrect because Protista can be both unicellular and multicellular. Protista is a diverse kingdom that includes organisms like algae, amoeba, and paramecium. While some Protista, like certain types of algae, are indeed multicellular, others, like amoeba, are unicellular.

Option 3 states that Fungi do not perform photosynthesis. This statement is correct. Fungi are heterotrophic organisms that obtain nutrients from organic sources. Unlike plants, which perform photosynthesis to produce their own food, fungi rely on external sources of organic matter.

Option 4 states that fungi do not have a cell wall. This statement is incorrect. Fungi do have a cell wall, which helps provide structure and support to their cells. However, the composition of the cell wall in fungi is different from that in plants.