(English Medium) ICSE Class 10 - CISCE Important Questions for Biology

Give technical terms for The nerve which transmits impulses from the ear to the brain

Perilymph or endolymph (Which one surrounds the organ of Corti ?)

Sclerotic layer or choroid layer.(Which one forms the Iris ?)

Give biological explanations for We should not put sharp objects into our ears.

Mention the exact location of the following : 
 Incus 

Name the following:

The ear ossicle in contact with the oval window of the inner ear.

Give the biological terms for the three ear ossicles.

Choose the odd one out from the following terms and name the category to which the others belong:

Distinguish between Semicircular canals and Utriculus based on their function.

The ear ossicle that transports sound vibrations to the inner ear:

Adjusting the focal length of the eye lens to view objects at different distances is done by ______.

Name the following:

A defect in our eyes in which some parts of the object are in focus while the other parts are blurred.

A teacher drew the diagram of the heart on the blackboard and told the students to copy it in their notebooks. Mahesh couldn't see the diagram clearly as it appeared blurred to him.

1. Name the defect of the eye Mahesh is suffering from.
2. Where is the image formed in this defect?
3. Mahesh consults an eye doctor and is prescribed suitable lenses to correct the defect. Which type of lens do his spectacles have?

Rahul inserted a hairpin into his right ear to remove ear wax. He felt a sudden sharp pain with loss of hearing. This was due to ______.

Arrange and rewrite the term in the group in the correct order so as to be in a logical sequence, beginning with the term that is underlined.

Auditory canal, Organ of Corti, Stapes, Malleus

Read the explanation given below and name the structure:

A tubular passage that connects the pharynx and the middle ear.

The diagram given below represents the location and structure of an endocrine gland. Study the same and answer the questions that follow 

(i) Name the endocrine gland shown in the diagram.
(ii) Name the secretion of the gland which regulates basal metabolism.
(iii) Name the mineral element required for the synthesis of the above mentioned hormone.
(iv) Name the disease caused due to undersecretion of the above mentioned hormone in children.
(v) Name the disease caused due to hypersecretion of the above mentioned hormone.

Gigantism and Acromegaly are due to :
A. Hyposecretion of Thyroxine
B. Hyposecretion of Growth hormone
C. Hypersecretion of Thyroxine
D. Hypersecretion of Growth hormone

Given below is the outline of the human body showing the important glands :

(i) Name the glands marked 1 to 4.
(ii) Name the hormone secreted by part 2. Give one important function of this hormone.
(iii) Name the endocrine part of the numbered 3.
(iv) Why is the part labelled I called the master gland? Which part of the forebrain controls the gland labelled I?
(v) Name the gland that secretes the ‘emergency hormone’.

Briefly explain the following terms: Hormone