Option 1 states that both the assertion (A) and the reason (R) are true, and that R is the correct explanation of A.

The assertion states that pitcher plants capture insects, digest them, and absorb their nitrogenous compounds. This is true. Pitcher plants have evolved unique adaptations to attract and trap insects, primarily through the use of specialized leaves called pitchers. These pitcher-shaped leaves contain fluid that lures insects inside, where they become trapped and eventually digested. The plants then absorb the nutrients, including nitrogenous compounds, from the digested insects.

The reason states that pitcher plants secrete trypsin, which converts animal proteins into readily absorbable amines. This is also true. Trypsin is an enzyme produced by many organisms, including pitcher plants. It is responsible for breaking down proteins into simpler, absorbable compounds called amines. By secreting trypsin, pitcher plants are able to break down the proteins in the insects they capture and convert them into nutrients that can be readily absorbed.

Therefore, both A and R are true, and R is indeed the correct explanation of A. Option 1 is the correct answer.