Identify the labelled parts P, Q, R, and S in the stages of a dicot embryo shown in the diagram.

Choose the option that indicates correct labelling of 'P', 'Q', 'R', and 'S' of embryo in different stages of its development.
Observe the population growth curve and answer the questions given below:
Population growth curves showing exponential growth (A) and logistic growth (B).
Mention what does ‘K’ in the graph represent.