Organisms which are multicellular eukaryotes without cell walls and are heterotroph are called ______?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Animalia
The five-kingdom classification of R. H. Whittaker (1969) groups organisms by cell type, body organisation, cell wall and mode of nutrition:
Monera — prokaryotes such as bacteria, mostly unicellular
Protista — unicellular eukaryotes such as Amoeba, Paramecium and Euglena
Fungi — eukaryotes with cell walls of chitin that absorb their food (heterotrophs)
Plantae — multicellular eukaryotes with cellulose cell walls that make their own food (autotrophs)
Animalia — multicellular eukaryotes with no cell wall that take in ready-made food (heterotrophs)
Only Animalia has all three features the question gives: multicellular, without a cell wall, and heterotrophic.