Answer:
Ethylene. (Ans. D)
Explanation:
Ethylene controls the aging and ripening processes in plants. While many fruits and vegetables generate small amounts of ethylene, climacteric fruits like bananas produce larger quantities. This ethylene release accelerates respiration, triggers more ethylene production, and causes changes in color and flavor.
Therefore, when transporting green bananas over long distances to stores, the ethylene gas should be removed from their surrounding environment.
The benefit of reduced gametophytes in seed plants is that they obtain nutrients from the sporophytes. Gametophytes are tiny and can develop from spores that are kept within the parental sporophyte's sporangia. This setup shields the growing gametophyte from environmental stress, allowing it to absorb nutrients from the sporophyte.
