Class 4 Exam > Class 4 Notes > Science for Class 4 > Worksheet: Digestive System - 1
Class 4 Science - Digestive System - CBSE Worksheets - 1
Q1: Give one word for the following.
(i) The part of the digestive system where digestion begins.
(ii) The outer most layer of the tooth.
(iii) The pointed and sharp teeth beside the incisors.
(iv) The first set of teeth a child gets.
(v) The inner most part of the tooth with nerve endings.
Q2: Choose the correct option.
(i) The undigested food is passed to ______________ where most of the water is absorbed back from the food before being passed to the rectum.
(a) small intestine
(b) large intestine
(c) anus
(d) stomach
(ii) Part of the teeth that is visible and not covered by the gum.
(a) Dentine
(b) Crown
(c) Pulp
(d) Root
(iii) These teeth are located at the end of each jaw.
(a) Milk teeth
(b) Premolars
(c) Molars
(d) Incisors
(iv) Number of milk teeth that a child has are
(a) 22
(b) 20
(c) 28
(d) 30
(v) Teeth used for tearing food are
(a) premolars
(b) molars
(c) canines
(d) incisors
Q3: Fill in the blanks.
(i) ______________ present in the mouth makes the food soft and turns it sweet.
(ii) In the small intestine, ______________ from liver and pancreatic juice from pancreas are added to the food to digest it completely.
(iii) ______________ are the teeth that help to tear food.
(iv) From the mouth, the food gets swallowed into a pipe also known as ______________.
(v) ______________ protects the innermost part of the tooth called the pulp.
Q4: True & False.
(i) Saliva in the mouth converts starch in the food to sugar.
(ii) Molars are the toughest among all types of teeth.
(iv) Milk is essential for strong and healthy teeth.
(v) Liver takes the food to the stomach.
(vi) Babies are born with per manent teeth.
Q5: Match the teeth with its correct name and action.
Q6: Answer the following questions in brief.
(i) What is digestion? List the organs of the digestive system.
(ii) List some healthy eating habits.
(iii) What is the role of the small intestine in digesting food?
(iv) List any three ways by which we can keep our teeth healthy and sparkling.
(v) Name the four types of teeth.
Q7: Answer the following questions in detail.
(i) Explain different parts of tooth in humans.
(ii) Describe the process of digestion that takes place in the stomach.
(iii) Label the following parts of the tooth. Draw the same diagram on your own.
You can find Worksheets Solutions here: Worksheet Solutions: Digestive System - 1
The document Class 4 Science - Digestive System - CBSE Worksheets - 1 is a part of the Class 4 Course Science for Class 4.
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FAQs on Class 4 Science - Digestive System - CBSE Worksheets - 1
| 1. What is the digestive system? |  |
Ans. The digestive system is a group of organs that work together to break down food into smaller molecules that can be absorbed by the body. It includes organs such as the mouth, esophagus, stomach, small intestine, and large intestine, as well as accessory organs like the liver, gallbladder, and pancreas.
| 2. How does the digestive system work? | |
Ans. The digestive system starts with the ingestion of food through the mouth, where it is chewed and mixed with saliva. It then travels down the esophagus to the stomach, where it is further broken down by stomach acid and enzymes. From there, the partially digested food moves into the small intestine, where it is broken down even further by enzymes and absorbed into the bloodstream. The remaining waste then moves into the large intestine, where water is absorbed and the waste is formed into feces.
| 3. What are the main functions of the digestive system? | |
Ans. The main functions of the digestive system are to break down food into smaller molecules that can be absorbed by the body, absorb nutrients and water from the food, and eliminate waste products from the body. It also plays a role in the immune system by preventing harmful bacteria from entering the body through the digestive tract.
| 4. What are some common digestive disorders? | |
Ans. Some common digestive disorders include gastroesophageal reflux disease (GERD), irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), constipation, and diarrhea. These disorders can cause symptoms such as abdominal pain, bloating, gas, and changes in bowel movements.
| 5. How can I maintain a healthy digestive system? | |
Ans. To maintain a healthy digestive system, it is important to eat a balanced diet that includes plenty of fiber, fruits, and vegetables. Drinking enough water, exercising regularly, and managing stress can also help support a healthy digestive system. Avoiding smoking and excessive alcohol consumption is also beneficial for overall digestive health.
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