Test: The Mystery of Food - Class 5 MCQ

Chewing food properly is essential because it breaks down food into smaller pieces, which makes it easier for the digestive system to process. Additionally, proper chewing stimulates the production of saliva, which contains enzymes that begin the digestion process. It also helps to prevent choking by ensuring that larger pieces of food are not swallowed whole.

Good microbes are crucial in the fermentation process of idli batter, as they help the batter rise and create a soft, fluffy texture in the idlis. These beneficial microbes consume sugars in the batter, producing gases that cause it to expand and rise, resulting in the light and airy consistency that idlis are known for.

Canines are the type of teeth responsible for tearing food. They are pointed and designed to grip and tear through tougher food items, such as meat. Each type of tooth in the mouth has a specific function, contributing to the efficient breakdown of food during chewing.

Storing food in the refrigerator slows down the growth of microbes because the cold temperature inhibits their activity. This is why perishable items like milk, vegetables, and meats are kept in the fridge to extend their freshness and prevent spoilage. Refrigeration is a widely used method for food preservation in households.

Spices can help preserve food by slowing down microbial growth. Many spices have natural antimicrobial properties that inhibit the growth of bacteria and fungi, which can cause food spoilage. This is why spices have been used in cooking and food preservation for centuries, adding both flavor and longevity to dishes.

Pickling is a traditional method that involves immersing food, such as cucumbers or mangoes, in oil or vinegar. This method helps prevent air from reaching the food, which in turn stops the growth of microbes that cause spoilage. Pickled foods can last for long periods and are often flavorful additions to meals.

Foods spoil faster when they are exposed to moisture and air because these conditions create an ideal environment for microbes to thrive. For example, bread left out in the open can develop mold quickly due to its exposure to both air and moisture. In contrast, foods stored properly, such as pickles in oil, can last longer because the oil keeps air away from the food, preventing spoilage.

Eating spoiled food can lead to indigestion and other gastrointestinal issues. Spoiled food may contain harmful bacteria that can cause symptoms such as stomach pain, nausea, and diarrhea. It is essential to be cautious about food freshness to avoid these health risks.

Drying food helps preserve it by removing moisture, which is essential for the growth of microbes that cause spoilage. When food is dried, the lack of water makes it difficult for bacteria and fungi to survive, thus extending the food's shelf life. This method is commonly used for fruits, vegetables, and herbs.

Seasonal fruits and vegetables are typically fresher and more nutritious because they are harvested at their peak ripeness. This means they contain higher levels of vitamins and minerals compared to out-of-season produce, which may be picked early and transported long distances. Eating seasonal produce also supports local agriculture and helps reduce environmental impact.