(English Medium) ICSE Class 10 - CISCE Important Questions

The diagram below represents the human heart in one phase of its function. Study the diagram carefully and answer the questions that follow:

(i) Name the phase.
(ii) Which part of the heart is contracting in this phase? Give a reason to support your answer.
(iii) Name the parts labelled 1 to 4.
(iv) What type of blood flows through ‘2’?
(v) State the function of the part numbered ‘5’.
(vi) Name the membrane that covers the heart.

Explain Pulse

The exact location of the tricuspid valve

The diagram below represents the simplified pathway of the circulation of blood. Study the same and answer the questions which follow: 

(i) Name the blood vessels labelled 1 and 2.
(ii) State the function of blood vessels labelled 5 and 8.
(iii) What is the importance of the blood vessel labelled 6?
(iv) Which blood vessel will contain a high amount of glucose and amino acids after a meal?
(v) Draw a diagram of the different blood cells as seen in a smear of human blood.

Explain Diapedesis.

Give technical terms for The protective covering of the heart

Name the following:

The blood vessel which supplies blood to the liver.

Blood in the pulmonary artery or pulmonary vein (Which one contains less oxyhaemoglobin ?)

Mention the exact location of the Pulmonary semilunar valve

Give appropriate biological or technical terms for the following :

The complex consisting of a DNA strand and a core of histones

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) ______________.