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Class 8 Science Revision Questions and Answers on Human Body
Digestion of food DOES NOT take place in the
A. Mouth
B. Large intestines
C. Stomach
D. Small intestines
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1.
Kamau chewed a piece of meat for some time and then swallowed it. At which part of his digestive system did the digestion of the meat start? A. Mouth. B. Stomach. C. Small intestines. D. Large intestine.
2.
Which one of the following is a function of the pancreas? It A. Absorbs digested food. B. Produces digestive juice. C. Absorbs water. D. Stores digested food.
3.
In which one of the following parts of the digestive system does absorption of food take place? A. Duodenum. B. Small intestine. C. Stomach. D. Large intestine.
4.
Which one of the following body structures in the table below is NOT CORRECTLY matched to its function? Structure Function A. Villi Absorb digested food B. Large intestine Stores digested food C. Pancreas Produces digestive juice D. Mouth Food broken into small particles
5.
Digestion of food DOES NOT take place in the A. Mouth B. Large intestines C. Stomach D. Small intestines
6.
Which one of the following is the function of the rectum? A. Completes digestion of food. B. Stores undigested matter. C. Absorbs water. D. Absorbs digested food.
7.
Bile mixes with food in the A. Stomach B. Duodenum C. Small intestine D. Large intestine
8.
Which one of the following is NOT CORRECTLY matched with its function? Part Function A. Esophagus Passage of food. B. Stomach Mixes food with enzymes. C. Small intestine Completes digestion of food D. Large intestine Absorbs digested food
9.
Which one of the following statements describe a human canine tooth? A. Chisel shaped with one root. B. Rough surface with two roots. C. Rough surface with three roots. D. Pointed tip with one root.
10.
Which of the following types of human teeth is CORRECTLY matched to its function? Teeth Function A. Incisors Tearing and cutting B. Canines Tearing and crushing C. Premolars Cutting and grinding D. Molars Crushing and grinding
11.
The table shows parts of the human digestive system and their functions. Which one of the following options represents X and Y? A. Esophagus Passage of food. B. Large intestine Digestion of food C. Rectum Storage of undigested food. D. Mouth Taking in food.
12.
The following are characteristics of a certain type of tooth: (i) Sharp (ii) Chisel shaped (iii) Has one root The type of tooth described is a A. Molar B. Canine C. Premolar D. Incisor
13.
Which one of the following characteristics can be used to identify molars? Presence of A. One root and chisel shape B. Cusps and ridges C. One root and cusps D. Ridges and chisel shape
14.
The function of fibre in the human diet is to A. Provide the body with nutrients B. Transport digested food C. Prevent constipation D. Help in digestion of food.
15.
Which one of the following is a function of fibre in the diet? A. Helps in getting rid of undigested food. B. Helps in absorption of digested food. C. Adds nutrients to the body. D. Helps in digestion of food.
16.
In the human body water is absorbed in the A. Large intestines B. Small intestines C. Stomach D. Rectum
17.
Which of the following CORRECTLY represents the path taken by food from the esophagus? A. Stomach------>small intestines----->large intestines------->rectum----->anus. B. Small intestines----->large intestines------>stomach----->rectum-----anus C. Stomach----->large intestines----->small intestines---->rectum-----anus D. Large intestines---->stomach---->small intestines-----rectum---->anus
18.
In the human body digested food is absorbed in the A. Stomach B. Large intestines C. Rectum D. Small intestines
19.
The importance of fibre in the human diet is to help in the A. Digestion of food B. Movement of food C. Absorption of water D. Absorption of nutrients
20.
Which of the following parts of the human digestive system is correctly matched to its function? ORGAN FUNCTION A. Mouth - Digests protein B. Stomach - Secretes digestive juice C. Small Intestines - Absorbs water D. Large intestines - Stores digested food
21.
Which one of the following is a function of fibre in the human diet? A. Helps in food digestion B. Helps in absorption of digested food C. Prevents diarrhea D. Removal of undigested materials.
22.
During digestion, the following activities occur in the mouth EXCEPT A. Mechanical breakdown of food. B. Secretion of digestive juice. C. Killing of germs D. Rolling of food into bolus.
23.
The following are some parts of the human digestive system: (i) Esophagus. (ii) Stomach. (iii) Small intestines. (iv) Large intestines. In which two parts does digestion of food take place? A. (i) and (ii). B. (ii) and (iii). C. (iii) and (iv). D. (i) and (iv)
24.
The main function of the hair and mucus found in the breathing system is to A. Help in exchange of gases B. Clean the air C. Protect the nose D. Keeps the trachea open.
25.
The following are functions of the trachea except A. Trapping dust B. Moistening air C. Warming air D. Exchange gases
26.
Which one of the following parts of the breathing system warms the incoming air? A. Nose. B. Trachea. C. Diaphragm. D. Lung.
27.
The following are some of the physical changes that take place during adolescence. (i) Hips become broader. (ii) Chest and shoulders become broader. (iii) Pimples may appear on the face. (iv) Voice breaks. (v) Pubic hair grows. Which of the changes take place in girls? A.(i) (ii) (v). B.(i) (iii) (iv). C. (ii) (iv) (v). D. (i) (iii) (v).
28.
Which one of the following changes takes place during adolescence in boys only? A. Fast body growth. B. Growth of pubic hair. C. Chest and shoulders become broader. D. Releasing of sex cells.
29.
Which one of the following physical changes observed in boys and girls during adolescence is not correctly matched? Boys Girls A. Voice breaks - Pubic hair grows B. Wet dreams - Hips broaden C. Pimples on face - Chest broaden D. Pubic hair grows - Pimples on face
30.
Which one of the following changes occurs in both adolescent boys and girls? A. Production of sex cells. B. Hips broaden C. Voice breaks. D. Enlargement of breasts.
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