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Question
Differentiate between members of the following pair with reference to what is asked in bracket.
Dynamic balance and static balance (Definition)
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Solution
Dynamic balance is when the body is in motion whereas static balance is positional balance with respect to gravity.
RELATED QUESTIONS
Given below is a diagram depicting a defect of the human eye, study the same and then answer the questions that follow:
(i) Name the defect shown in the diagram.
(ii) What are the two possible that cause this defect?
(iii) Name the type of lens used to correct this defect.
(iv) With the help of a diagram show how the defect shown above is rectified using a suitable lens.
- Draw a well-labelled diagram of the membranous labyrinth found in the inner ear.
- Based on the diagram drawn above in (i), give a suitable term for each of the following descriptions:
- The sensory cells that help in hearing.
- The part that is responsible for static balance of the body.
- The membrane-covered opening that connects the middle ear to the inner ear.
- The fluid present in the middle chamber of cochlea.
- The structure that maintains dynamic equilibrium of the body.
State whether the following statements are true (T) or false (F). If false, correct them by changing any one single word in each.
Semi-circular canals are concerned with static (positional) balance.
With reference to the human ear, answer the question that follow:
Name the three small bones present in the middle ear. What is the biological term for them collectively ?
What is the name of passage in outer ear which carries sound waves to the ear-drum ?
Name the following:
Part of internal ear related to balance.
Long answer question
Draw the neat labelled diagram of the human ear.
Verify experimentally the laws reflection of sound.
Mention the name of passage is the outer ear which carries sound waves to the eardrum.
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Eyes: Photoreceptors :: Ears : ______.
