What is the difference between pollen tube and style?

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Detailed Solution

Feature	Pollen Tube	Style
What it is	A tubular outgrowth of the male gametophyte (pollen grain).	The slender part of the pistil between stigma and ovary (female organ).
Origin	Forms when a viable pollen grain germinates on the stigma.	Part of the carpel (gynoecium); a sporophytic tissue of the flower.
Location/Path	Grows through the style (and sometimes stigma) toward the ovule.	Lies above the ovary and below the stigma; contains transmitting tissue that guides pollen tubes.
Function	Transports two male gametes (sperm cells) to the embryo sac for fertilization.	Provides a pathway and nourishment/signals for pollen-tube growth; helps select compatible pollen.
Composition	Tube formed by the tube (vegetative) cell of pollen; carries the generative-cell–derived sperm.	Composed of soft/transmitting tissue surrounded by epidermal tissues; may vary in length or be absent in some species.