Question

The group showing maximum nutritional diversity is
A.Monera
B.Plantae
C.Fungi
D.Algae

Answer 1

Based on similarities and dissimilarities, organisms are grouped in a hierarchy of categories. This is known as biological classification. Classification helps in the identification of organisms. The study of one or two organisms of a particular group may be helpful in gathering information about that particular group. According to the Five Kingdom Classification of Whittaker, the five kingdoms are Monera, Protists, Plantae, Fungi, and Animalia.

Complete answer: 1.Flagellates, diatoms, slime molds, dinoflagellates fall under Kingdom Protista. They are all unicellular and live mostly in the aquatic environment. They may be photosynthetic, parasitic, ingestive, saprobic or holozoic.
2.The Kingdom fungi have yeast, molds, morels, mushrooms. Organisms that belong to this kingdom are heterotrophic with an absorptive type of nutrition.
3.All photosynthetic eukaryotic multicellular plants belong to the Kingdom Plante. They have an autotrophic mode of nutrition.
4.All prokaryotes like bacteria, mycoplasma, actinomycetes belong to Kingdom Monera. Monerans are unicellular mostly and have varied modes of nutrition. They can be saprobic, parasitic, chemoautotrophic, photoautotrophic, and symbiotic.
5.Photoautotrophic bacteria are the types of bacteria that possess two types of photosynthetic pigments namely bacteriochlorophyll and bacteriopheophytin. Purple bacteria and green sulphur bacteria are photoautotrophic bacteria.
6.Chemoautotrophic bacteria utilize energy derived from chemical reactions to manufacture their organic food from inorganic raw materials. Examples of this type of bacteria are nitrifying bacteria, sulphur containing bacteria.
7.Saprophytic bacteria are free-living and obtain their food from organic remains like animal excreta, fallen leaves.
Symbiotic bacteria mutually benefit one another. For example, E. coli.
Parasitic bacteria come in contact with other living beings and get their growth and nourishment and in return provide harm to them.
Thus, the correct option is A) Monera.

Note: Some important facts about the Kingdom Monera are:
1.They are considered decomposers and mineralizers of the biosphere like the fungi.
2.Thus, Monera shows both autotrophic and heterotrophic modes of nutrition. Chemosynthesis and photosynthesis are the two types of autotrophic nutrition. Heterotrophic nutrition may be saprotrophic, symbiotic, and parasitic.