Teeth And Microbes Class 4 Questions And Answers

Worksheet On Teeth And Microbes For Class 4

 

Teeth and Microbes class 4 worksheet : What are the 4 types of teeth and their functions, teeth worksheets for grade 4.

 

Teeth And Microbes Class 4 Questions And Answers

Teeth And Microbes Class 4 Questions And Answers

Fill in the blanks.

  1. Human beings have ……………sets of teeth. [Two /four]
  2. Temporary teeth are also called ……………….teeth. [Milk /permanent]
  3. Permanent set of teeth has …………….teeth. [20 /32]
  4. …………….. holds the teeth in our mouth. [gums / pulp]
  5. White part on outside of tooth is called ……………….. [enamel/dentine]
  6. Sticky yellow layer on teeth is called ……………………. [plaque/pulp]
  7. Microbes can be seen with the help of ……………………
  8. Harmful microbes are called ……………………
  9. The process of Digestion starts from …………….
  10. Milk teeth are ………………. in number.
  11. Food pipe is also called ………………….

Answers [Fill in the blanks]

  1. Two
  2. Milk
  3. 32
  4. Gums
  5. Enamel
  6. Plaque
  7. Microscope
  8. Germs
  9. Mouth
  10. Twenty
  11. Esophagus

Teeth and Microbes Quiz for Grade 4

 

Answer the following questions

 

Question – Which organ helps food to enter into the stomach?

Answer: Food enters into the stomach through the food pipe also called esophagus.

 

Question – How many milk teeth are there in our life?

Answer: There are 20 milk teeth a child has in their life.

 

Question – What are milk teeth?

Answer: Milk teeth are temporary teeth. it appears first when the child is two and a half year old.

 

Question – What are permanent teeth?

Answer –Permanent teeth appear between the ages of 7 to 12 and they are 32 in number.

 

Question – What is plaque?

Answer: The yellow sticky layer on the tooth is called plaque.

 

Question – What are microbes?

Answer: Microbes are small living organisms that cannot be seen with a naked eye.

 

Question – How many types of microbes are there?

Answer: Microbes are of 4 types

  1. Virus
  2. Bacteria
  3. Fungi
  4. Protozoa

Question – How many types of teeth and functions of teeth in the human body?

Answer: There are 4 types of teeth present in the human body.

Incisors:-

  • Total 8 incisors – 4 in each jaw
  • Used for cutting and biting

Canines:-

  • Total 4 canines – 2 in each jaw
  • Used for tearing food

Premolars

  • Total 8 premolars – 4 in each jaw
  • Used to crush and chew food

Molars

  • Total 12 premolars
  • Used to chew and grind the food

 

Question – Name some diseases caused by viruses?

Answer: Viruses cause diseases such as Influenza, polio and common cold.

 

Question – Name some diseases caused by bacteria?

Answer: Bacteria cause diseases such as typhoid, tuberculosis and cholera.

 

Question – Name some diseases caused by fungi?

Answer: Fungi cause diseases such as ringworm and athlete’s foot.

 

Question – Name some diseases caused by protozoa?

Answer: Protozoa cause diseases such as food poisoning, dysentery, and malaria.

 

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