In this article we are providing the detailed and accurate NCERT Solutions for Class 11 Biology chapter 20, Locomotion and Movement. Each solution is explained in a way to help students easily understand concepts used in it.
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Students who are having trouble finding the right and simple answers for questions given in Class 11 Biology chapter, Locomotion and Movement, can use the answers given here as referral answers. Solving the NCERT exercise questions gives you enough practice to solve any other problem asked in the exams. This will help you assure positive results.
Some of the questions and their solutions from NCERT Solutions for Class 11: Locomotion and Movement, are as follows:
Q. Define sliding filament theory of muscle contraction.
Ans. Sliding filament theory of muscle contraction states that contraction of a muscle fibre takes place by the sliding of the thin filaments over the thick filaments.
Q. Write true or false. If false change the statement so that it is true.
(a) Actin is present in thin filament
(b) H-zone of striated muscle fibre represents both thick and thin filaments.
(c) Human skeleton has 206 bones.
(d) There are 11 pairs of ribs in man.
(e) Sternum is present on the ventral side of the body.
(b) False: H-zone of striated muscle fibre represents the thick filaments.
(d) False: There are 12 pairs of ribs in a man.
Q. What are the different types of movements exhibited by the cells of human body?
Ans. Cells of the human body exhibit three main types of movements:
(i) Amoeboid movement: Leucocytes present in the blood exhibit amoeboid movement. Like in amoeba, they can extend their cytoplasm in any direction with the help of internal cytoskeletal elements .
(ii) Ciliary movement: Ciliary movement occurs in most of our internal tubular organs which are lined by ciliated epithelium. For example, reproductive cells such as sperms and ova show ciliary movement. The passage of ova through the fallopian tube towards the uterus is facilitated by this movement.
(iii) Muscular movement: Muscle cells in human body show muscular movement. This type of movement is caused movement caused by the contraction of the myofibrils of the muscle cells.
Get the complete the NCERT solutions for Class 11: Locomotion and Movement, from the following link:
Students may download the NCERT solutions for Class 11 Biology chapter- Locomotion and Movement, in the form of PDF.
Class 11 Biology NCERT Chapter: Locomotion and Movement
In order to get a crisp of the concepts and theories explained in Class 11 Biology, NCERT book is considered the best source. Here, we are providing the CBSE Class 11 Biology NCERT chapter- Locomotion and Movement. Students are advised to thoroughly read this chapter to grasp all the concepts as this will help you understand the problem discussed in a question and then come with an appropriate answer.
Main topics discussed in Class 11 Biology chapter: Locomotion and Movement are:
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