Some characteristic features [presence $(+)$ and absence $(-)$ ] of certain organisms belonging to various categories $\mathbf{P}, \mathbf{Q}, \mathbf{R}, \mathbf{S}$ and $\mathbf{T}$ are listed (Table). The category that best satisfy the options is

$\begin{array}{|c|c|c|c|c|c|} \hline \text{Characteristics} & P & Q & R & S & T \\ \hline \text{Membrane-bound organelles} & - & + & + & + & - \\ \hline \text{Introns} & - & + & + & + & - \\ \hline \text{Cell wall} & + & + & + & + & + \\ \hline \text{Flagella/cilia} & + & + & - & - & - \\ \hline \text{Chlorophyll-a} & - & + & - & + & - \\ \hline \text{Mode of nutrition} & \text{Heterotrophic} & \text{Autotrophic} & \text{Heterotrophic} & \text{Autotrophic} & \text{Autotrophic} \\ \hline \end{array}$

• A

  P-Monera; Q-Cyanobacteria; R-Protista; S-Fungi; T-Plantae
• B

  P-Fungi; Q-Protista; R-Monera; S-Plantae; T-Cyanobacteria
• C

  P-Monera; Q-Plantae; R-Fungi; S-Protista; T-Cyanobacteria
• Correct answer
  D

  P-Monera; Q-Protista; R-Fungi; S-Plantae; T-Cyanobacteria

Hence, the correct answer is option: 'D'.