<prompt> Of the total amount of saliva secreted by all the salivary glands in a day, more than half is secreted by:Parotid gland.Submandibular gland.Sublingual gland.Combined secretion from minor salivary glands.  <response>: Submandibular gland secrets about 60 of the saliva, parotid glands about 35 and remaining 5 is contributed by minor salivary glands. 