Pollen tube develops from
A. Vegetative nucleus
B. Vegetative cell
C. Generative cell
D. Male gametes

Hint: Pollen tube development is significant for the sexual generation to happen in seed plants. When a pollen grain has embedded, the germination cycle is started. During this cycle, the pollen grain goes through a conformational change whereupon a given segment starts to jut outwards to frame a cylinder-like structure, known as the pollen tube.

Complete answer:
A pollen tube is a cylindrical structure created by the male gametophyte of seed plants when it sprouts. Pollen tube prolongation is a necessary stage in the vegetation cycle. The dust tube goes about as a lead to ship the male gamete cells from the dust grain—either from the stigma (in flowering plants) to the ovules at the base of the pistil or directly through ovule tissue in certain gymnosperms.
They are utilized as a model for understanding plant cell conduct. Exploration is progressing to understand how the pollen tube reacts to extracellular direction signs to accomplish treatment.
The male contraceptive organ of the flower, the stamen, produces pollen. The opening of anthers makes pollen accessible for ensuing fertilization (move of pollen grains to the pistil, the female contraceptive organ). Every pollen grain contains a vegetative cell and a generative cell that partitions to frame two sperm cells.
So, the correct answer is “Option D”.

Additional Information:
The nucleus is a profoundly specific organelle that fills in as the data and regulatory focus of the cell. This organelle has two significant capacities. A twofold layered membrane, the atomic envelope, isolates the substance of the core from the cell cytoplasm.
Vegetable cells have numerous capacities; it gives the cell shape, gives quality, settles tissues, secures organelles inside the cell, and has a function in cell flagging. The cell film, a twofold phospholipid layer, encompasses the whole cell.
A generative cell is a cell of the male gametophyte (dust grain) of seed plants that parcels to give rise genuinely or in an indirect manner to sperm.

Note:
The pollen tube is a line like structure that goes about as a mode to ship the male gamete cells from the pollen grain to the ovules legitimately through ovule tissue in certain gymnosperms. The opening of anthers in flowers ensures the availability of pollen that contains a vegetative and generative cell that is further divided into two sperm cells. Pollen tubes are also excellent in determining plant cell behavior.