AP BIOLOGY

Detailed explanation-1: -The large intestine does not secrete any enzyme. It is about 1.5 m long and consists of the caecum, appendix, colon, and rectum. It mainly absorbs water from undigested food. In the oral cavity or mouth, salivary glands secrete an array of enzymes and substances that aid in digestion and also disinfection.

Detailed explanation-2: -The liver produces bile juice which does not have any digestive enzymes but only bile salts and bile pigments are present in it. Thus, the correct answer is option C.

Detailed explanation-3: -Unlike the small intestine, the large intestine produces no digestive enzymes. Chemical digestion is completed in the small intestine before the chyme reaches the large intestine. Functions of the large intestine include the absorption of water and electrolytes and the elimination of feces.