HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Important Questions for Biology

Name of the valve between the left atrium and left ventricle and give its significance.

Describe agranulocytes with the help of diagrams.

What is Sinus arrhythmias?

The help of a well-labelled diagram describes the internal structure of the human heart.

Answer in only one sentence of the following question: 

Mention the role of the pacemaker in human heart. 

What is blood pressure?

______ is known as pacemaker of heart.

The volume of air that remains in the lungs after maximum respiration is ______.

Which of the following has thickest wall?

The erythropoeitic tissue in adult is mainly found in ______.

Identify ‘A’ from the following ECG.

Identify the pulse point ‘A’ from below given diagram.

Define intracellular transport and extracellular transport.

How a portal vein differs from normal vein?

Define Hamburger’s phenomenon. Add a note on it.

Draw diagrammatic representation of cardiac cycle. Explain ventricular systole.

With the help of labelled diagram explain the exchange of gases between alveolus and capillary.

While playing cricket Raju faces problems of severe pain and heaviness in the chest. Pain spreads from the neck, lower jaw, left arm and left shoulder. From the above symptoms identify the disease:

With the help of neat and labelled diagrams artery and vein.

What is erythropoiesis?