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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: The portion of the myofibril between two successive 'Z' lines is considered as the functional unit of contraction called sarcomere.
Reason: During contraction, 'I' bands get reduced whereas 'A' bands retain the length, thereby causing shortening of the sarcomere.
  • a)
    If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  • b)
    If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
  • c)
    If Assertion is true but Reason is false.
  • d)
    If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Directions: In the following questions, a statement of assertion is fo...
Each myofibril contains actin and myosin filaments which give it striated appearance due to dark and light bands. The light bands are made of actin and are called I- bands or isotropic band, whereas the dark bands are called 'A' or anisotropic bands and contain myosin. Both the proteins are arranged as rod-like structures, parallel to each other and also to the longitudinal axis of the myofibrils. In the centre of each 'I' band is an elastic fibre called 'Z' line which bisects it. The portion of the myofibril between two successive 'Z' lines is considered as the functional unit of contraction and is called a sarcomere. During contraction, the 'Z' lines attached to the actions are pulled inwards thereby causing a shortening of the sarcomere, i.e., contraction. Hence, during shortening of the muscle, i.e., contraction, the 'I' bands get reduced, whereas the 'A' bands retain the length.
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: The portion of the myofibril between two successive Z lines is considered as the functional unit of contraction called sarcomere.Reason: During contraction, I bands get reduced whereas A bands retain the length, thereby causing shortening of the sarcomere.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer?
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: The portion of the myofibril between two successive Z lines is considered as the functional unit of contraction called sarcomere.Reason: During contraction, I bands get reduced whereas A bands retain the length, thereby causing shortening of the sarcomere.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: The portion of the myofibril between two successive Z lines is considered as the functional unit of contraction called sarcomere.Reason: During contraction, I bands get reduced whereas A bands retain the length, thereby causing shortening of the sarcomere.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: The portion of the myofibril between two successive Z lines is considered as the functional unit of contraction called sarcomere.Reason: During contraction, I bands get reduced whereas A bands retain the length, thereby causing shortening of the sarcomere.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: The portion of the myofibril between two successive Z lines is considered as the functional unit of contraction called sarcomere.Reason: During contraction, I bands get reduced whereas A bands retain the length, thereby causing shortening of the sarcomere.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: The portion of the myofibril between two successive Z lines is considered as the functional unit of contraction called sarcomere.Reason: During contraction, I bands get reduced whereas A bands retain the length, thereby causing shortening of the sarcomere.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. 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 is followed by a statement of reason. Mark the correct choice as:Assertion: The portion of the myofibril between two successive Z lines is considered as the functional unit of contraction called sarcomere.Reason: During contraction, I bands get reduced whereas A bands retain the length, thereby causing shortening of the sarcomere.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: The portion of the myofibril between two successive Z lines is considered as the functional unit of contraction called sarcomere.Reason: During contraction, I bands get reduced whereas A bands retain the length, thereby causing shortening of the sarcomere.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion: The portion of the myofibril between two successive Z lines is considered as the functional unit of contraction called sarcomere.Reason: During contraction, I bands get reduced whereas A bands retain the length, thereby causing shortening of the sarcomere.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. 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 is followed by a statement of reason. Mark the correct choice as:Assertion: The portion of the myofibril between two successive Z lines is considered as the functional unit of contraction called sarcomere.Reason: During contraction, I bands get reduced whereas A bands retain the length, thereby causing shortening of the sarcomere.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice NEET tests.
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