The Verhulst-Pearl logistic growth model describes population expansion limited by \( K \), which signifies the environment's carrying capacity.
- \( r \) denotes the intrinsic rate of natural increase.
\[ \begin{array}{|c|c|} \hline \textbf{Symbol} & \textbf{Meaning} \\ \hline K & \text{Carrying Capacity (Maximum population size)} \\ r & \text{Intrinsic Rate of Natural Increase} \\ \hline \end{array} \]
- \( K \) represents the maximum population size sustainable indefinitely by the environment, considering resource constraints.
Therefore, the correct option is (3) Carrying capacity.
Study the pie chart given below, representing the global biodiversity and proportionate number of species of major taxa.

Answer the following questions:
[a] Identify 'X' and 'Y' in the given pie chart.
[b] Which one of the two 'X' or 'Y' is the most species-rich taxonomic group and by what percentage?
[c] Name the level of Biodiversity represented by the following: