Option- 1 Cashew nut: Cashew nut is incorrect because it does produce seeds, but it also produces flowers. Cashew trees have small, yellow flowers that eventually develop into fruits containing the nut.

Option- 2 Coffee: Coffee is incorrect because it does produce seeds, but it also produces flowers. Coffee plants have white, fragrant flowers that develop into small, red or purple fruits, inside of which are the coffee beans.

Option- 3 Groundnut: Groundnut is incorrect because it does produce seeds, but it also produces flowers. Groundnuts, also known as peanuts, are legume plants that produce yellow flowers that eventually turn into the familiar peanut pods.

Option- 4 Pine: Pine is correct because it produces seeds but does not produce flowers. Pines are cone-bearing trees that reproduce through the production of cones. The female cones contain the seeds, which are dispersed when the cones open.

In conclusion, option 4, Pine, is the correct answer as it is the only one that produces seeds but does not produce flowers. Alert - Correct answer should be option-1 Cashew nut as it produces seeds and flowers.