Question

Each of the following characteristics represents a Kingdom proposed by Whittaker. Arrange the following in increasing order of complexity of body organization.
A. Multicellular heterotrophs with cell wall made of chitin.
B. Heterotrophs with tissue/organ/organ system level of body organization.
C. Prokaryotes with cell wall made of polysaccharides and amino acids.
D. Eukaryotic autotrophs with tissue/organ level of body organization.
E. Eukaryotes with cellular body organization.
Choose the correct answer from the options given below:

• A. C, E, A, D, B
• B. A, C, E, D, B
• C. C, E, A, B, D
• D. C, E, A, C, B

Hint:

In Whittaker’s classification, complexity of body organization increases from prokaryotes (simple structure) to eukaryotes with tissue/organ/organ system levels of organization (most complex).

Answer 1

The Correct Option is A

To order the characteristics by increasing complexity of body organization:

• C - Prokaryotes: Simple cellular structure (least complex).
• E - Eukaryotes: Cellular body organization (more complex than prokaryotes).
• A - Multicellular heterotrophs with chitin cell walls (complex eukaryotic multicellular organisms).
• D - Eukaryotic autotrophs: Tissue/organ level of organization (higher complexity).
• B - Heterotrophs: Tissue/organ/organ system level of organization (most complex).

The sequence reflecting this increasing complexity is C, E, A, D, B.