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STD 11 - 17. Locomotion and movement — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 17. Locomotion and movement1 Mark
MCQ
During muscle contraction
  • A
    Thick filaments slide over thin filaments
  • ✓
    I-band gets reduced
  • C
    Both $(a)$ and $(b)$
  • D
    None of the above
✓

Answer

Correct option: B.
I-band gets reduced
b
During shortening of the muscles, $i.e.$, contraction, the I-bands get reduced, whereas the $A-$bands retains the length

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