Food And Digestive System Quiz For Grade 4
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Are you studying in class 4? What do you know about food and the digestion of food? Try the quiz below and test your knowledge regarding the human digestive system. This system comprises the gastrointestinal (GI) tract, liver, pancreas, and gallbladder. What else do you know about human digestion? The quiz covers questions related to digestion and the digestive system. Do you think you can answer them all? Let's see if you can ace this quiz easily or not.
- 1.
Breaking down of food is called
- A.
Combustion
- B.
Digestion
- C.
Mixing
- D.
Ingestion
Correct Answer
B. DigestionExplanation
Digestion is the correct answer because it refers to the process of breaking down food into smaller molecules that can be absorbed and utilized by the body. Combustion is the process of burning, not relevant to food breakdown. Mixing refers to the combining of ingredients, not specifically related to food breakdown. Ingestion refers to the intake of food, but does not encompass the process of breaking it down.Rate this question:
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- 2.
Digestion starts in the
- A.
Stomach
- B.
Mouth
- C.
Small intestine
- D.
Trachea
Correct Answer
B. MouthExplanation
Digestion starts in the mouth. This is where the process of breaking down food begins. The mouth contains teeth that mechanically break down food into smaller pieces, and saliva is produced to moisten the food and begin the chemical breakdown of carbohydrates. After chewing and mixing the food with saliva, it is then swallowed and travels down the esophagus into the stomach, where further digestion occurs. Therefore, the mouth is the correct answer as it is the initial site of digestion.Rate this question:
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- 3.
Food in the mouth is called
- A.
Chyme
- B.
Mushy food
- C.
Bolus
- D.
Saliva
Correct Answer
C. BolusExplanation
When food enters the mouth, it is chewed and mixed with saliva to form a soft, rounded mass called a bolus. The bolus is then swallowed and moves down the esophagus into the stomach. Therefore, the correct answer is bolus.Rate this question:
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- 4.
Bile is secreted by the
- A.
Liver
- B.
Gall bladder
- C.
Pancreas
- D.
Salivary glands
Correct Answer
A. LiverExplanation
Bile is a digestive fluid that helps in the breakdown and absorption of fats. It is produced by the liver and stored in the gallbladder. When we consume fatty foods, the gallbladder releases bile into the small intestine to aid in digestion. The liver is responsible for the production of bile, making it the correct answer in this case.Rate this question:
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- 5.
Carbohydrates are broken down in the
- A.
Stomach
- B.
Small intestine
- C.
Mouth
- D.
All of these
Correct Answer
C. MouthExplanation
Carbohydrates are broken down in the mouth through the process of chewing and mixing with saliva. Saliva contains an enzyme called amylase, which begins the breakdown of carbohydrates into simpler sugars. This initial digestion in the mouth prepares the carbohydrates for further breakdown and absorption in the small intestine. Therefore, the correct answer is "Mouth".Rate this question:
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- 6.
Finger like projections in the small intestine are
- A.
Villi
- B.
Glands
- C.
Mucous
- D.
Sac
Correct Answer
A. VilliExplanation
Villi are finger-like projections in the small intestine that increase the surface area for absorption of nutrients. They are covered in microvilli, which further increase the surface area. The villi contain blood vessels and lacteals, which help in the absorption of nutrients into the bloodstream. This structure allows for efficient absorption of nutrients from digested food, making villi an essential feature of the small intestine.Rate this question:
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- 7.
The largest salivary glands are
- A.
Sublingual glands
- B.
Parotid glands
- C.
Submandibular glands
- D.
Columnar glands
Correct Answer
B. Parotid glandsExplanation
The parotid glands are the largest salivary glands in the human body. They are located near the ears, in front of the earlobes. These glands produce saliva, which helps in the digestion process by moistening food and breaking it down. The parotid glands secrete saliva into the mouth through a duct called Stensen's duct. These glands are responsible for producing the majority of the saliva in the mouth.Rate this question:
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- 8.
Small intestine is about ______ feet long.
- A.
20
- B.
25
- C.
27
- D.
30
Correct Answer
B. 25Explanation
The small intestine is approximately 25 feet long.Rate this question:
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- 9.
Food stays in the stomach for about __________ hours.
- A.
5-6 hours
- B.
24 hours
- C.
2-4 hours
- D.
4-6 hours
Correct Answer
C. 2-4 hoursExplanation
The correct answer is 2-4 hours. After we eat, the food enters the stomach where it is broken down by stomach acid and digestive enzymes. This process usually takes about 2-4 hours. After this, the partially digested food moves into the small intestine for further digestion and absorption of nutrients. Therefore, food stays in the stomach for approximately 2-4 hours before it continues its journey through the digestive system.Rate this question:
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- 10.
Waste is stored in the _________ before it gets expelled.
- A.
Anus
- B.
Rectum
- C.
Small intestine
- D.
Anal
Correct Answer
B. RectumExplanation
The waste produced during the digestion process is stored in the rectum before it is expelled from the body. The rectum is the final section of the large intestine where feces are accumulated and held until they are ready to be eliminated through the anus.Rate this question:
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Current Version
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Dec 14, 2023Quiz Edited by
ProProfs Editorial Team -
Oct 08, 2010Quiz Created by
Parameshwari
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