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HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Important Questions for Biology

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

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Human Heart

Describe agranulocytes with the help of diagrams.

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Pulmonary and Systemic Circulation (Double Circulation) >> Lymph and Lymphatic System

What is Sinus arrhythmias?

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Human Heart

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

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Human Heart

Answer in only one sentence of the following question: 

Mention the role of the pacemaker in human heart. 

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Human Heart

What is blood pressure?

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Blood Pressure (B.P.)

______ is known as pacemaker of heart.

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Human Heart

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

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Mechanism of Respiration > Breathing

Which of the following has thickest wall?

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Human Heart

The erythropoeitic tissue in adult is mainly found in ______.

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Composition of Blood > Cellular Elements: Red Blood Cells (Erythrocytes)

Identify ‘A’ from the following ECG.

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Blood Pressure (B.P.)

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

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Blood Vessels

Define intracellular transport and extracellular transport.

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Transportation in Living Organisms

How a portal vein differs from normal vein?

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Blood Vessels

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

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Mechanism of Respiration > Breathing

Draw diagrammatic representation of cardiac cycle. Explain ventricular systole.

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Working Mechanism of Human Heart

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

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Mechanism of Respiration > Breathing

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:

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Blood Pressure (B.P.)

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

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Blood Vessels

What is erythropoiesis?

Appears in 1 question paper
Chapter: [8] Respiration and Circulation
Concept: Composition of Blood > Cellular Elements: Red Blood Cells (Erythrocytes)
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