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

Given below is the transverse section of the spinal cord. Read the information below the diagram and fill in the blanks:

The spinal cord extends from the medulla oblongata of the brain and runs down through the whole length of the vertebral column. The spinal cord is covered by the meninges. It conducts impulses from the skin and muscles to the brain. It also conducts impulses from the brain to the muscles of the trunk and limbs.

The spinal cord is a part of the (a) ______ Nervous System. The grey matter in the picture given above consists of (b) ______ while the white matter consists of (c) ______. The spinal cord is concerned with the (d) ______ actions below the neck. (e) ______ is the bony structure that protects the spinal cord.

The kind of lens required to correct Myopia

Deafness is causal due to the rupturing of the Pinna.

Eye : Optic nerve : : Ear : ___________

Given below is a representation of a kind of pollution. Study the same and answer the questions that follow

(i) Name the kind of pollution.
(ii) List any three common sources of this pollution.
(iii) Mention three harmful effects of this pollution on human health.
(iv) Explain the term ‘Pollutant’.
(v) Name two soil pollutants

Mention the exact location of the Semi-circular canals

Mention the exact location of the Eustachian tube

find odd one from following: Malleus, iris, Stapes, Incus.

State the exact location of the Ciliary body

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.

Given in the box below are a set of 14 biological terms. Of these, 12 can be paired into 6 matching pairs. Out of the six pairs, one has been done for you as an example. 
Example : endosmosis - Turgid cell.
Identify the remaining five matching pairs :

(i) Draw a well labelled diagram of the membranous labyrinth found in the inner ear.
(ii) Based on the diagram drawn above in (i) give a suitable term for each of the following descriptions :
1. The sensory cells that helps in hearing.
2. The part that is responsible for static balance of the body.
3. The membrane covered opening that connects the middle ear to the inner ear.
4. The fluid present in the middle chamber of cochlea.
5. The structure that maintains dynamic equilibrium of the body.

Briefly explain the following terms: Power of accommodation

State the exact location of the Organ of Corti

fill in the blanks with suitable functions: Ciliary body and __________.

A fluid that occupies the larger cavity of the eye ball behind the lens is
___________.

the biological/technical terms for a thin membrane covering the entire front part of the eye.

the biological/technical terms for the lens of eye losing flexibility resulting in a kind of long-sightedness in middle aged people.

What is the function of ear ossicles?

Differentiate between the Rods and Cones of Retina (Type of pigment)