Class 9 Exam  >  Class 9 Questions  >   Direction: In the following questions, a sta... Start Learning for Free
Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Mitochondria are called ‘powerhouses’ of the cell.
Reason : Mitochondria produce cellular energy in the form of ATP
  • 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?
Verified Answer
Direction: In the following questions, a statement of assertion (A) i...
Mitochondria are cell organelles of aerobic eukaryotes. These are site of aerobic respiration, where Krebs cycle occurs in matrix, while ETS and oxidative phosphorylation enzymes are located in inner membrane. They are called powerhouses of cell because they produce energy in the form of ATP. They are the major centres of release of energy in the aerobic respiration.
View all questions of this test
Most Upvoted Answer
Direction: In the following questions, a statement of assertion (A) i...
Assertion: Mitochondria are called 'powerhouses' of the cell.
Reason: Mitochondria produce cellular energy in the form of ATP.

The correct answer is option 'A': Both the assertion and reason are true, and the reason is the correct explanation of the assertion.

Explanation:
- The mitochondria are known as the 'powerhouses' of the cell because they are responsible for producing energy in the form of ATP (Adenosine Triphosphate), which is the energy currency of the cell.
- The mitochondria carry out a process called cellular respiration, where they convert glucose and oxygen into ATP through a series of biochemical reactions.
- The reason provided correctly explains why mitochondria are referred to as 'powerhouses' of the cell because they produce the energy required for various cellular activities.
- Without mitochondria, cells would not have sufficient energy to carry out their functions, and the cell's overall metabolism would be severely impacted.
- Mitochondria are present in most eukaryotic cells, including plant and animal cells. They have an inner and outer membrane, with the inner membrane containing specialized structures called cristae, where the majority of ATP production occurs.
- The structure and function of mitochondria make them essential organelles for cellular energy production and overall cell survival.
- Therefore, the reason provided for the assertion is correct, and it explains why mitochondria are called 'powerhouses' of the cell.

In conclusion, the assertion that mitochondria are called 'powerhouses' of the cell is true, and the reason provided, which states that mitochondria produce cellular energy in the form of ATP, is the correct explanation for this assertion.
Attention Class 9 Students!
To make sure you are not studying endlessly, EduRev has designed Class 9 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 9.
Explore Courses for Class 9 exam

Top Courses for Class 9

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Mitochondria are called ‘powerhouses’ of the cell.Reason : Mitochondria produce cellular energy in the form of ATPa)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
Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Mitochondria are called ‘powerhouses’ of the cell.Reason : Mitochondria produce cellular energy in the form of ATPa)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 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Mitochondria are called ‘powerhouses’ of the cell.Reason : Mitochondria produce cellular energy in the form of ATPa)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 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Mitochondria are called ‘powerhouses’ of the cell.Reason : Mitochondria produce cellular energy in the form of ATPa)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 Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Mitochondria are called ‘powerhouses’ of the cell.Reason : Mitochondria produce cellular energy in the form of ATPa)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 9. Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Mitochondria are called ‘powerhouses’ of the cell.Reason : Mitochondria produce cellular energy in the form of ATPa)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 Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Mitochondria are called ‘powerhouses’ of the cell.Reason : Mitochondria produce cellular energy in the form of ATPa)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 Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Mitochondria are called ‘powerhouses’ of the cell.Reason : Mitochondria produce cellular energy in the form of ATPa)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 Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Mitochondria are called ‘powerhouses’ of the cell.Reason : Mitochondria produce cellular energy in the form of ATPa)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 Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Mitochondria are called ‘powerhouses’ of the cell.Reason : Mitochondria produce cellular energy in the form of ATPa)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 9 tests.
Explore Courses for Class 9 exam

Top Courses for Class 9

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev