Monocarpic plants die after flowering and fruiting.Examples:- Rice, Wheat, Radish, Carrot, Bamboo, etc. 

guava is a polycarpic plant which do not die after flowering

Guava is not monocarpic because it is capable of producing fruits multiple times throughout its lifespan. Monocarpic plants, on the other hand, flower, set seeds, and then die. Let's discuss each option:

a) Paddy: Paddy is a term used to refer to rice plants. Rice plants are monocarpic, meaning they produce flowers, set seeds, and die after the reproduction process.

b) Bamboo: Bamboo is also monocarpic. Most species of bamboo flower once in their lifetime, after which they die. This phenomenon is known as gregarious flowering.

c) Cabbage: Cabbage is a biennial plant, which means it completes its life cycle in two years. In the first year, cabbage plants form a compact head of leaves, and in the second year, they produce flowers and seeds. After the seeds are produced, the plant dies. Therefore, cabbage is considered monocarpic.

d) Guava: Guava is not monocarpic. It is a perennial plant, which means it can produce fruits multiple times throughout its lifespan. After the first flowering and fruiting, the guava plant continues to grow and produce new branches, leaves, flowers, and fruits in subsequent years.

In conclusion, the correct answer is option D, Guava, as it is not monocarpic.