The term 'Pollen Pouch' refers to a SAC-like structure found in some flowers that contains the pollen grains. The SAC is also known as a pollinium or pollinia, and is typically composed of two or more anthers fused together. The pollinia are released when the flower is visited by an insect, allowing for cross-pollination. The SAC is usually attached to a sticky substance that helps the pollinia adhere to the insect's body.