(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Note the relationship between the first two words and suggest the suitable word/words for the fourth place.

Ear pinna : Auricle :: Inner ear : ______.

Note the relationship between the first two words and suggest the suitable word/words for the fourth place.

Semi-circular canal : Ampulla :: Cochlea : ______.

Where are the following located?

Eustachian canal

Define the following term:

Ear ossicles

Give reason:

Three small bones of ear ossicles are advantageous as compared to one single bone for hearing.

With reference to human ear answer the question that follow:

Name the part of the ear associated with Static balance.

With reference to human ear answer the question that follow:

Name the part of the ear associated with dynamic balance.

With reference to human ear answer the question that follow:

Name the part of the ear associated with the amplification of vibrations.

1. Draw a neat and well labelled diagram of the membranous labyrinth found in the inner ear.
2. Based on the diagram drawn above in (i), give a suitable term for each of the following descriptions:
   1. The structure responsible for hearing.
   2. The sensory cells that help in hearing.
   3. The membrane-covered opening that connects the middle ear to inner ear.
   4. The nerves that carry impulses from the ear to the brain.
   5. The tube which equalises the air pressure on either side of the ear drum.

Given below is the diagram of a part of the human ear. Study the same and answer the questions that follow:

1. Give the collective biological term for Malleus, locus and Stapes.
2. Name the parts labelled A, B and C in the diagram.
3. State the functions of the parts labelled 'A' and 'B'.
4. Name the audio receptor region present in the part labelled 'A'.

Name the part of the inner ear that is responsible for static balance in human beings.

The figure given below shows the principal parts of a human ear. Study the diagram and answer the following questions.

1. Label the parts 1 to 8.
2. State the role of parts 6, 7 and 8.
3. Why is it harmful to use a sharp object to remove ear wax? Mention the number and name of the part involved.

Write important role/roles of the following:

S.A.N.

Write the exact location of the following:

Pacemaker

Mention whether the following statement is (T) Or (F). Give reason in support of your answer.  

Crossing over between chromatids can occur only between homologous chromosomes. 

The diagram given below represents a certain phenomenon which occurs during meiosis. Name and explain the phenomenon by using the terms homologous chromosomes, chromatids, crossing over. 

Which part of the human ear gives ‘ Dynamic balance’ to the body? 

Choose the correct answer:
Crossing over is a feature of ______________

Give the biological terms for the three ear ossicles.

Distinguish between Semicircular canals and Utriculus based on their function.