Question

An organism is examined and is found to be multicellular and heterotrophic and have cell walls made of a substance other than cellulose. The organism belongs to which of the following kingdoms?
A. Monera
B. Protista
C. Fungi
D. Plantae
E. Animalia

Answer 1

Hint:- Organisms made up of more than one cell are said as multicellular organisms. The basic functions are divided among the cells, tissues and organs of the multicellular organisms. Heterotrophic organisms are depending on others to get their food as they do not make their own food. Eukaryotic heterotrophs are mostly multicellular.

Complete answer:
The five-kingdom classification system was introduced by Robert Whittaker in 1967. Living organisms are subdivided into five major Kingdoms: Monera, Protista, Fungi, Plantae, and Animalia. Division of five kingdom classification systems on the basis of cellular organization (prokaryotic, unicellular and multicellular eukaryotes) and on mode of nutrition, on reproduction. Monera kingdom organisms are unicellular prokaryotes with cell walls but do not have nuclei such as bacteria. Protista kingdom organisms are unicellular eukaryotes without cell walls and have nuclei such as algae, euglena, amoeba, slime molds and plasmodial. Fungi kingdom organisms are multicellular heterotrophic eukaryotes with the chitinous cell wall such as yeast, molds, mushrooms etc. The Fungi cell wall is uniquely formed of mannoproteins, alpha and beta linked glucans, and chitins. Cell wall provides cell rigidity, shape to fungi kingdom species and cell wall also helps in cell metabolism, ion exchange mechanism. Fungi absorb nutrients for survival. Plantae kingdom organisms are multicellular autotrophic eukaryotes with cellulosic cell walls. Animalia kingdom organisms are multicellular heterotrophic eukaryotes without cell walls.

So, the correct option is C – Fungi.

Note:- Saprobes are a type of fungi which helps in breakdown of organic material which returns nutrients back to the soil. Yeast is a fungus which helps in making bread and fermented drinks. And some parasitic fungi are actually human pathogens which causes ringworm.