To solve this problem, we need to analyze the given statements:$\newline$Statement A: In gymnosperms, the pollen grains are released from the microsporangium and carried by air currents.$\newline$Statement R: Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed.$\newline$Let's break down each statement:$\newline \bullet$Statement A:$\newline$ - Gymnosperms are a group of seed-producing plants that include conifers, cycads, Ginkgo, and gnetophytes.$\newline$ - In gymnosperms, pollen grains are indeed released from the microsporangium and are typically carried by air currents to reach the female cones.$\newline$ - Therefore, Statement A is true.$\newline \bullet$Statement R:$\newline$ - In gymnosperms, after the pollen grains reach the female cone, they typically form a pollen tube to deliver the male gametes to the egg cell.$\newline$ - The statement that pollen grains are carried to the mouth of the archegonia and male gametes are discharged without forming a pollen tube is incorrect.$\newline$ - Therefore, Statement R is false.$\newline$Now, let's determine the relationship between the statements:$\newline \bullet$Statement A is true, but Statement R is false.$\newline$Therefore, the correct answer is Option 3: A is true but R is false.