Class 10 Exam > Class 10 Questions > Directions: In the following questions, a st...
Start Learning for Free
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion (A): Alveoli contain an extensive network of blood vessels.
Reason (R): Alveoli is the site where exchange of gases occurs.
- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c)Assertion (A) is true but reason (R) is false.
- d)Assertion (A) is false but reason (R) is true.
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Directions: In the following questions, a statement of assertion (A) ...
Solution:
View all questions of this test
Both assertion and reason are true and the reason is the correct explanation of the assertion.
Reasons:
- Alveoli are tiny balloon-like sac-shaped structures.
- They help in the exchange of gases in the lungs.
- The alveoli are made of pneumocyte Type I and Type II cells.
- Type I cells are squamous cells lining the alveoli to increase the diffusion rate.
- Type II cells help in the reduction of surface tension y release of lamellar fluid.
- Alveoli contain an extensive network of blood vessels to facilitate the fast exchange of gases.
You can study more about Life Processes through the document:
Most Upvoted Answer
Directions: In the following questions, a statement of assertion (A) ...
Yes the correct answer is option A
Explanation : According to the assertion Alveoli contain an extensive network of blood vessels
We know that this statement is true
Reason (R): Alveoli is the site where exchange of gases occurs.
The given reason is also true
Why ?
Because as alveoli are the site of gaseous exchange they contain extensive network of blood capillaries . Blood is of two types oxygenated and deoxygenated from where carbon dioxide is removed in alveoli .
So hence option A is correct
Explanation : According to the assertion Alveoli contain an extensive network of blood vessels
We know that this statement is true
Reason (R): Alveoli is the site where exchange of gases occurs.
The given reason is also true
Why ?
Because as alveoli are the site of gaseous exchange they contain extensive network of blood capillaries . Blood is of two types oxygenated and deoxygenated from where carbon dioxide is removed in alveoli .
So hence option A is correct
Free Test
FREE
| Start Free Test |
Community Answer
Directions: In the following questions, a statement of assertion (A) ...
Assertion (A): Alveoli contain an extensive network of blood vessels.
Reason (R): Alveoli is the site where exchange of gases occurs.
The correct answer is option A, which means both the assertion (A) and reason (R) are true, and reason (R) is the correct explanation of assertion (A).
Explanation:
Alveoli and Gas Exchange:
- Alveoli are tiny air sacs located at the end of the bronchioles in the lungs.
- They are the primary site of gas exchange in the respiratory system.
- Oxygen from the inhaled air diffuses across the alveolar walls into the bloodstream, and carbon dioxide from the bloodstream diffuses into the alveoli to be exhaled.
Alveoli and Blood Vessels:
- Alveoli contain an extensive network of blood vessels, specifically capillaries.
- Capillaries are the smallest and thinnest blood vessels in the body.
- They surround the alveoli, forming a close association with their walls.
- This close proximity allows for efficient exchange of gases between the alveoli and the blood.
Explanation of Assertion and Reason:
- The assertion states that alveoli contain an extensive network of blood vessels, which is true.
- The reason states that alveoli is the site where exchange of gases occurs, which is also true.
- The reason explains why the presence of an extensive network of blood vessels in the alveoli is important.
- The close association between the alveoli and the blood vessels allows for efficient exchange of gases during respiration.
- Oxygen can easily diffuse from the alveoli into the surrounding capillaries, where it binds to hemoglobin and is transported to the body tissues.
- Similarly, carbon dioxide produced by cellular respiration diffuses from the capillaries into the alveoli to be exhaled.
Conclusion:
The alveoli contain an extensive network of blood vessels, and this network facilitates the exchange of gases between the alveoli and the bloodstream. Therefore, both the assertion and reason are true, and the reason correctly explains the assertion.
Reason (R): Alveoli is the site where exchange of gases occurs.
The correct answer is option A, which means both the assertion (A) and reason (R) are true, and reason (R) is the correct explanation of assertion (A).
Explanation:
Alveoli and Gas Exchange:
- Alveoli are tiny air sacs located at the end of the bronchioles in the lungs.
- They are the primary site of gas exchange in the respiratory system.
- Oxygen from the inhaled air diffuses across the alveolar walls into the bloodstream, and carbon dioxide from the bloodstream diffuses into the alveoli to be exhaled.
Alveoli and Blood Vessels:
- Alveoli contain an extensive network of blood vessels, specifically capillaries.
- Capillaries are the smallest and thinnest blood vessels in the body.
- They surround the alveoli, forming a close association with their walls.
- This close proximity allows for efficient exchange of gases between the alveoli and the blood.
Explanation of Assertion and Reason:
- The assertion states that alveoli contain an extensive network of blood vessels, which is true.
- The reason states that alveoli is the site where exchange of gases occurs, which is also true.
- The reason explains why the presence of an extensive network of blood vessels in the alveoli is important.
- The close association between the alveoli and the blood vessels allows for efficient exchange of gases during respiration.
- Oxygen can easily diffuse from the alveoli into the surrounding capillaries, where it binds to hemoglobin and is transported to the body tissues.
- Similarly, carbon dioxide produced by cellular respiration diffuses from the capillaries into the alveoli to be exhaled.
Conclusion:
The alveoli contain an extensive network of blood vessels, and this network facilitates the exchange of gases between the alveoli and the bloodstream. Therefore, both the assertion and reason are true, and the reason correctly explains the assertion.
Attention Class 10 Students!
To make sure you are not studying endlessly, EduRev has designed Class 10 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 10.
|
Explore Courses for Class 10 exam
|
|
Similar Class 10 Doubts
Top Courses for Class 10View all
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Alveoli contain an extensive network of blood vessels.Reason (R): Alveoli is the site where exchange of gases occurs.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer?
Question Description
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Alveoli contain an extensive network of blood vessels.Reason (R): Alveoli is the site where exchange of gases occurs.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Alveoli contain an extensive network of blood vessels.Reason (R): Alveoli is the site where exchange of gases occurs.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Alveoli contain an extensive network of blood vessels.Reason (R): Alveoli is the site where exchange of gases occurs.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer?.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Alveoli contain an extensive network of blood vessels.Reason (R): Alveoli is the site where exchange of gases occurs.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Alveoli contain an extensive network of blood vessels.Reason (R): Alveoli is the site where exchange of gases occurs.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Alveoli contain an extensive network of blood vessels.Reason (R): Alveoli is the site where exchange of gases occurs.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer?.
Solutions for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Alveoli contain an extensive network of blood vessels.Reason (R): Alveoli is the site where exchange of gases occurs.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10.
Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
Here you can find the meaning of Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Alveoli contain an extensive network of blood vessels.Reason (R): Alveoli is the site where exchange of gases occurs.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Alveoli contain an extensive network of blood vessels.Reason (R): Alveoli is the site where exchange of gases occurs.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Alveoli contain an extensive network of blood vessels.Reason (R): Alveoli is the site where exchange of gases occurs.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Alveoli contain an extensive network of blood vessels.Reason (R): Alveoli is the site where exchange of gases occurs.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Alveoli contain an extensive network of blood vessels.Reason (R): Alveoli is the site where exchange of gases occurs.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 10 tests.
|
|
Explore Courses for Class 10 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup