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Chapters
2: Reproduction in Lower and Higher Animals
3: Inheritance and Variation
4: Molecular Basis of Inheritance
5: Origin and Evolution of Life
6: Plant Water Relation
7: Plant Growth and Mineral Nutrition
▶ 8: Respiration and Circulation
9: Control and Co-ordination
10: Human Health and Diseases
11: Enhancement of Food Production
12: Biotechnology
13: Organisms and Populations
14: Ecosystems and Energy Flow
15: Biodiversity, Conservation and Environmental Issues
![SCERT Maharashtra solutions for Biology [English] 12 Standard HSC chapter 8 - Respiration and Circulation - Shaalaa.com](/images/biology-english-12-standard-hsc_6:1b94e35560a844c094a1f846c467d1b4.biology "SCERT Maharashtra solutions for Biology [English] 12 Standard HSC chapter 8 - Respiration and Circulation")
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Solutions for Chapter 8: Respiration and Circulation
Below listed, you can find solutions for Chapter 8 of Maharashtra State Board SCERT Maharashtra for Biology [English] 12 Standard HSC.
SCERT Maharashtra solutions for Biology [English] 12 Standard HSC 8 Respiration and Circulation MCQ
1 mark
In human respiration, chemical energy is released in the form of ______.
Acetyl co-enzyme A
ADP
ADPH2
ATP
Alveoli provide the surface area for exchange of ______.
food
enzymes
gases
hormones
The movement of diaphragm, intercostal muscles and rib cage helps in ______.
digestion
circulation
excretion
respiration
The volume of air that remains in the lungs after maximum respiration is ______.
1000 to 1100 ml
1100 to 1200 ml
2000 to 3000 ml
5200 to 5800 ml
Find out the example in which due to absence of respiratory pigment transport of respiratory gases does not takes place.
Cockroach
Scoliodon
Frog
Human
Which of the following has thickest wall?
Right auricle
Right ventricle
Left auricle
Left ventricle
The phase of contraction of heart is termed as ______.
diastole
systole
heart beat
heart sound
The free edges of cuspid valves are attached to the papillary muscles of the heart by fibres are called ______.
chordae tendinae
columnae carneae
connecting fibres
autorhythmic fibres
Ventricular depolarization is represented by ______.
P wave
QRS complex
T wave
P and T waves
The erythropoeitic tissue in adult is mainly found in ______.
kidney
liver
red bone marrow
spleen
SCERT Maharashtra solutions for Biology [English] 12 Standard HSC 8 Respiration and Circulation Very Short Answer
1 Mark
Name the cartilage which divides the nasal cavity into right and left nasal chambers.
Give the function of epiglottis.
Define total lung capacity.
Sachin shows symptoms of inflammation of the sinuses and mucous discharge due to viral and bacterial infection. Identify the disorder.
Define haematology.
Which type of blood flows through pulmonary veins?
In between which layers of pericardium, pericardial fluid is present?
How many molecules of haemoglobin are found in each erythrocyte?
Identify ‘A’ from the following ECG.
Identify the pulse point ‘A’ from below given diagram.
SCERT Maharashtra solutions for Biology [English] 12 Standard HSC 8 Respiration and Circulation Short Answer 1
2 Mark
Fill in the blanks with the help of chart.
| Organism | Habitat | Respiratory surface/ organ |
| Coelenterates | ||
| Spiders |
Define Bohr effect and Haldane effect.
Give any two effects of carbon monoxide poisoning.
Define intracellular transport and extracellular transport.
Name the pigment and enzyme found in erythrocytes?
Draw diagram of conducting system of human heart. Label SA node and bundle of His.
How a portal vein differs from normal vein?
SCERT Maharashtra solutions for Biology [English] 12 Standard HSC 8 Respiration and Circulation Short Answer 2
3 Mark
Distinguish between inspiration and expiration.
Write a note on Hering-Breuer reflex.
Define Hamburger’s phenomenon. Add a note on it.
Draw the chart of double circulation and label A, B, C and D.
Write a note on coagulation of blood.
Define hypertension. Explain coronary artery disease and angina pectoris.
Draw diagrammatic representation of cardiac cycle. Explain ventricular systole.
SCERT Maharashtra solutions for Biology [English] 12 Standard HSC 8 Respiration and Circulation Long Answer
4 mark
With the help of labelled diagram explain the exchange of gases between alveolus and capillary.
With the help of chart identify and write the function of any four leucocytes.
| Type | Leucocytes | Name of cell | Function |
| Granulocytes |  |
||
 |
|||
 |
|||
| Agranulocytes |  |
||
 |
Draw labelled diagram of internal structure of human heart.
Label right atrium, mitral valve, left ventricle and pulmonary semilunar valve.
Write a function of Eustachian and tricuspid valve found in human heart.
Solutions for 8: Respiration and Circulation
SCERT Maharashtra solutions for Biology [English] 12 Standard HSC chapter 8 - Respiration and Circulation
Shaalaa.com has the Maharashtra State Board Mathematics Biology [English] 12 Standard HSC Maharashtra State Board solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. SCERT Maharashtra solutions for Mathematics Biology [English] 12 Standard HSC Maharashtra State Board 8 (Respiration and Circulation) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
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Concepts covered in Biology [English] 12 Standard HSC chapter 8 Respiration and Circulation are Organs of Respiratory Exchange, Human Respiratory System, Respiration, Mechanism of respiration-Breathing, Regulation of Breathing / Respiration, Modified Respiratory Movements, Disorders of Respiratory System, Transportation in Living Organisms, Circulation in Animals, Composition of Blood: Red Blood Cells (Erythrocytes), Blood Circulatory System in Human, Composition of Blood: Plasma (The Liquid Portion of Blood), Composition of Blood: White Blood Cells (Leukocytes), Composition of Blood: Blood Platelets (Thrombocytes), Function of Platelets - Clotting of Blood (Coagulation), Human Heart, Working mechanism of human heart, Blood Vessels, Blood Pressure (B.P.), Electrocardiogram (ECG), Lymph and Lymphatic System, Types of Closed Circulation, Mechanism of respiration - Internal respiration, Mechanism of respiration - External respiration, Mechanism of respiration - Cellular respiration.
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