EASY
7th Kerala Board
IMPORTANT
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What role do lips, teeth, and tongue play in the mouth?

Important Questions on Through the Alimentary Canal

HARD
7th Kerala Board
IMPORTANT
Science for Class 7 - Part 1>Chapter 4 - Through the Alimentary Canal>Exercise 5>Q 3
Observe the changes on your own while having food and write down your observations.
HARD
7th Kerala Board
IMPORTANT
Science for Class 7 - Part 1>Chapter 4 - Through the Alimentary Canal>Exercise 5>Q 4
Why does the tooth, which does not decay even when buried for long in the earth, decay easily inside the mouth?
HARD
7th Kerala Board
IMPORTANT
Science for Class 7 - Part 1>Chapter 4 - Through the Alimentary Canal>Exercise 5>Q 5
As you know, marble is a hard material. Put a few small pieces of marble in dilute hydrochloric acid. Examine after a while. What changes do we observe in the marble pieces?
HARD
7th Kerala Board
IMPORTANT
Science for Class 7 - Part 1>Chapter 4 - Through the Alimentary Canal>Exercise 5>Q 6
How does acid come into contact with teeth?
EASY
7th Kerala Board
IMPORTANT
Science for Class 7 - Part 1>Chapter 4 - Through the Alimentary Canal>Exercise 5>Q 7
Explain the importance of cleaning our teeth after eating food?
MEDIUM
7th Kerala Board
IMPORTANT
Science for Class 7 - Part 1>Chapter 4 - Through the Alimentary Canal>Exercise 6>Q 1

Which of these is a good habit?

  1. I clean my teeth very carefully at night and remove all food remains from my teeth. So I don't care much about it in the morning
  2. I clean my teeth carefully every morning. I don't care much about it at night.
MEDIUM
7th Kerala Board
IMPORTANT
Science for Class 7 - Part 1>Chapter 4 - Through the Alimentary Canal>Exercise 6>Q 2
Which habit should be practised for the health of teeth? Why?
HARD
7th Kerala Board
IMPORTANT
Science for Class 7 - Part 1>Chapter 4 - Through the Alimentary Canal>Exercise 6>Q 3
Have you noticed teeth sprouting in the mouth of small children?