The enzyme which starts digestion of starch in man is called

Explanation

In the human body, digestion of starch begins in the mouth. The enzyme responsible for this is called ptyalin, which is secreted by the salivary glands. Ptyalin breaks down starch into smaller molecules called maltose. This process is important because it allows the body to absorb the nutrients from the starch in the food we eat. The breakdown of starch continues in the small intestine with the help of other enzymes. The correct answer to the question is Option D: Ptyalin. This enzyme is also known as salivary amylase. Option A, amylase, is a broad term that refers to enzymes that break down starch, but ptyalin specifically refers to the enzyme found in saliva. Lipase, Option B, breaks down lipids or fats and is not involved in the breakdown of starch. Pepsin, Option C, is an enzyme found in the stomach that breaks down proteins. Trypsin, Option E, is another enzyme involved in protein digestion and is found in the small intestine. In summary, the enzyme responsible for starting the digestion of starch in humans is ptyalin or salivary amylase, which is secreted by the salivary glands in the mouth. This enzyme breaks down starch into maltose, allowing the body to absorb nutrients. The other options listed in the question are not involved in the digestion of starch.