The correct option is C Monocarpic plant
Monocarpic plants are the plants that flower only once in their entire lifetime. After flowering, they produce fruits and then they die.
Perennial plants have a lifespan of a few to several years.
The hypothetical plant blooms every leap year and dies. This means that the plant has a lifespan of at least 4 years, so it can be considered a perennial plant. And since it blooms once before dying, it can be considered a monocarpic plant.
Polycarpic plants are perennial plants and flower repeatedly in intervals every year. E.g:- apple, mango, orange are perennial, polycarpic plants.
Gymnosperms are naked seeded plants. It means that their seeds are not covered by any sort of covering. The term ‘gymnosperm’ bears no specific connection to lifespan or flowering.
Short day plants require a lower photoperiod than a critical photoperiod for growth.