Explanation: Crown of teeth is covered by enamel. It is the highly mineralized substance of the body.

Explanation: Taenia solium is a pork tapeworm. It is a parasite causing disease. It lacks the alimentary canal.

Explanation: 20 teeth appear twice during the life span of an individual. The first set is called milk teeth and the second set is called permanent teeth.

Explanation: The pH of saliva is 6.8.it is basic in nature. It has enzymes to digest carbohydrates.

Explanation: Herbivores as grass eating animals. To digest the cellulose present in it the herbivores have long alimentary canal comparing to carnivores.

Explanation: Diastema is associated with an absence of teeth. It is very common in human beings.

Explanation: Peristalsis movement is an involuntary muscular movement. It occurs in esophagus, stomach and intestines.

Explanation: Incisors are four in numbers in a human being. They are located in the premaxilla above and on the mandible below.

Explanation: Esophagus does not release any enzyme. It connects throat from stomach and food passes through it.

Explanation: Vitamin C is water soluble and antioxidant. The disease scurvy is prevented and treated using vitamin C rich supplements.

Explanation: Enzymes, vitamins and hormones can be classified into single category on biological chemicals because of all of these help in regulating metabolism. They play a major role in the functioning of human body.

Explanation: Microphagial nutrition occurs in Paramecium. Paramecium is a tiny unicellular organism found in water.

Explanation: Kwashiorkor disease occurs due to a deficiency of proteins. It is a form of malnutrition.

Explanation: Osteomalacia is the softening of bones caused by impaired bone metabolism. It is caused due to inadequate levels of vitamin D calcium and phosphate.

Explanation: Biotrophic pathogens derive nutrients from living cells by maintaining host viability. They don’t kill host plant rapidly.