(English Medium) ICSE Class 10 - CISCE Important Questions

Give appropriate biological or technical terms for the following

The relaxation phase of the heart.

Given below is a diagram of a human blood smear.

Study the diagram and answer the questions that follow:

a) Name the components numbered ‘1’ to ‘4’

b) Mention two structural differences between the parts ‘1’ and ‘2’.

c) Name the soluble protein found in part ‘4’ which forms insoluble threads during clotting of blood.

d) What is the average lifespan of the component numbered ‘1’ ?

e) Component numbered ‘1’ do not have certain organelles but are very efficient in their function. Explain

 Match the items given in Column A with the most appropriate ones in Column B and REWRITE the correct matching pairs : 
Column A                     Column B 

(i) Cranial nerves            Testosterone
(ii) Leydig cells                Natural reflex 
(iii) Acetylcholine            12 pairs 
(iv) Spinal nerves             Prolactin
(v) Sneezing                     Neurotransmitter
                                         - 18 pairs

                                         - 31 pairs
                                         - Conditioned reflex                         

The heart sound 'Dub' is produced when ______.

Name the Following
The organ which produces urea.

Bile, Urea, Uric acid, Ammonia

Mention the exact location of the Prostate gland.

Give biological reasons for the following statements: There is frequent urination in winter than in summer

The nephrons discharge their urine at ______.

_____________ secreted by the (ii) _____________ lobe of the pituitary gland. If this hormone secretion is reduced, there is an increased production of urine. This disorder is called (iii) ____________. Sometimes excess glucose is passed with urine due to hyposecretion of another hormone called (iv) _____________ leading to the cause of a disease called (v) ______________.

the Biological/technical term Pigment providing colour to urine. 

The Biological/technical term for The removal of nitrogenous wastes from the body

The form in which glucose in stored in liver. 

State the exact location of the Loop of Henle.

the biological/technical terms for the hormone increasing reabsorption of water by kidney tubules

The diagram given below shows a section of human kidney. Study the diagram carefully and answer the questions that follow :

(i) Label the parts numbered 1 to 4.
(ii) Why does part ‘2’ have a striped appearance?
(iii) What is the fluid that passes down part ‘4’? Name the main nitrogenous waste present in it.
(iv) Mention the structural and functional units of kidneys.
(v) Name the two major steps in the formation of the fluid mentioned in Q.5 (a) (iii).

The diagram given below shows the male urinogenital system of a human being. Study the diagram and answer the questions that follow:

(i) Label the parts numbered 1 to 8.
(ii) Name the corresponding structure of part (4) in female  reproductive system.
(iii) What is the role of part 7?

Explain Selective reabsorption

The given diagram represents a nephron and its blood supply. Study the diagram and answer the following questions: 

(i) Label parts 1, 2, 3 and 4.
(ii) State the reason for the high hydrostatic pressure in the glomerulus.
(iii) Name the blood vessel which contains the least amount of urea in this diagram.
(iv) Name the two main stages of urine formation.
(v) Name the part of the nephron which lies in the renal medulla.

Correct the following statements by changing the underlined words:

The normal pale yellow colour of the urine is due to the presence of the pigment Melanin.