Food And Nutrition Quiz For 7 Grade

Explanation
Digestion is the correct answer because it refers to the process of breaking down complex components of food into simpler substances. This process occurs in the digestive system, where enzymes and acids break down carbohydrates, proteins, and fats into smaller molecules that can be absorbed and used by the body for energy and growth.

Explanation
The tongue helps in mixing saliva with food. The tongue is a muscular organ located in the mouth that plays a crucial role in the process of digestion. It aids in the movement of food within the mouth, helps to shape and position the food for chewing, and mixes the food with saliva, which contains enzymes that begin the process of breaking down carbohydrates. The tongue also helps in swallowing by pushing the food towards the throat.

Explanation
Starfish is the correct answer because it is a marine animal that is covered by hard shells of calcium carbonate, known as exoskeletons. Additionally, starfish have a unique mode of nutrition called "extracellular digestion." They have a specialized stomach that can be everted and pushed out of their body to engulf and digest prey outside of their body.

Explanation
Teeth are present in the buccal cavity and their main function is to cut the food into smaller pieces by chewing and grinding it. The teeth have a hard enamel covering that allows them to exert force on the food, breaking it down into smaller, more manageable pieces for digestion. The shape and arrangement of the teeth are specifically designed for this purpose, with different types of teeth serving different functions in the chewing process.

Explanation
The stomach's inner lining produces mucous, which protects the lining from the harmful effects of hydrochloric acid. Hydrochloric acid is produced in the stomach and helps kill bacteria that enter along with the food, as well as making the stomach acidic. Digestive juices are also produced in the stomach and help break down proteins in the food into simpler substances during digestion.

Explanation
The correct answer is Liver, Pancreas, and Salivary gland. These three glands are associated with the alimentary canal and secrete digestive juices. The liver produces bile, which helps in the digestion and absorption of fats. The pancreas secretes pancreatic juice, which contains enzymes that break down carbohydrates, proteins, and fats. The salivary glands produce saliva, which contains enzymes that initiate the digestion of carbohydrates in the mouth. The anus is not a gland associated with the secretion of digestive juices.

Explanation
The given answer includes all the correct parts of the canal. The mouth or buccal cavity is where the digestion process begins as food enters the body. The food pipe or esophagus is responsible for transporting food from the mouth to the stomach. The stomach is where food is further broken down by stomach acids. The small intestine is where most of the digestion and absorption of nutrients takes place. The large intestine is responsible for absorbing water and electrolytes from the remaining food material. The anus is the final part of the canal where waste material is eliminated from the body.

Explanation
Tooth decay is primarily caused by consuming foods that are high in sugar content, such as soft drinks and chocolates. These sugary foods provide a breeding ground for bacteria in the mouth, which produce acids that attack the tooth enamel, leading to decay. Chilies and junk food are not directly linked to tooth decay as they do not contain high sugar content.

Explanation
The liver is known as the largest gland of the human body. It secretes a digestive juice called bile juice. The bile juice is stored in the gallbladder. The bile juice makes it possible for the body to digest the fats by converting big molecules of fats into tiny fat droplets.

Explanation
The correct answer is "Brush, Dental floss" because brushing and using dental floss are both effective ways to clean teeth. Brushing helps remove plaque and food particles from the surface of the teeth, while dental floss helps clean the areas between the teeth where a toothbrush cannot reach. Both brushing and flossing should be done at least twice a day to maintain good oral hygiene.

Explanation
Pancreatic juice contains enzymes such as amylase and trypsin that act on carbohydrates and proteins respectively. Amylase breaks down carbohydrates into simpler forms such as glucose, while trypsin breaks down proteins into amino acids. This process of digestion allows the body to absorb and utilize these nutrients more efficiently.

Explanation
When we laugh or talk while eating, the windpipe remains open, allowing food particles to enter it. This can lead to various symptoms such as hiccups, coughing, and choking. These symptoms are the body's way of clearing the blockage in the windpipe caused by the food particles.