Class 11 Biology - Chapter Locomotion and Movement NCERT Solutions | How do you distinguish between a skeleta
How do you distinguish between a skeletal muscle and a cardiac muscle?
|
|
Skeletal muscle |
|
Cardiac muscle |
|
1. |
The cells of skeletal muscles are unbranched. |
1. |
The cells of cardiac muscles are branched. |
|
2. |
Intercalated discs are absent. |
2. |
The cells are joined with one another by intercalated discs that help in coordination or synchronization of the heart beat. |
|
3. |
Alternate light and dark bands are present. |
3. |
Faint bands are present. |
|
4. |
They are voluntary muscles. |
4. |
They are involuntary muscles. |
|
5. |
They contract rapidly and get fatigued in a short span of time. |
5. |
They contract rapidly but do not get fatigued easily. |
|
6. |
They are present in body parts such as the legs, tongue, hands, etc.
|
6. |
These muscles are present in the heart and control the contraction and relaxation of the heart.
|
More Questions From Class 11 Biology - Chapter Locomotion and Movement
- Q:- Name the type of joint between the following:-
(a) atlas/axis
(b) carpal/metacarpal of thumb
(c) between phalanges
(d) femur/acetabulum
(e) between cranial bones
(f) between pubic bones in the pelvic girdle - Q:- Fill in the blank spaces:
(a) All mammals (except a few) have __________ cervical vertebra.
(b) The number of phalanges in each limb of human is __________
(c) Thin filament of myofibril contains 2 F actins and two other proteins namely __________ and __________.
(d) In a muscle fibre Ca++ is stored in __________
(e) __________ and __________ pairs of ribs are called floating ribs.
(f) The human cranium is made of __________ bones. - Q:-
Describe the important steps in muscle contraction.
- Q:-
Draw the diagram of a sarcomere of skeletal muscle showing different regions.
- Q:-
Define sliding filament theory of muscle contraction.
- Q:-
Write the difference between:
(a) Actin and Myosin
(b) Red and White muscles
(c) Pectoral and Pelvic girdle - Q:- What are the different types of movements exhibited by the cells of human body?
- 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.
Popular Questions of Class 11 Biology
- Q:- Why are living organisms classified?
- Q:- Discuss how classification systems have undergone several changes over a period of time?
- Q:- What is the basis of classification of algae?
- Q:- What are the difficulties that you would face in classification of animals, if common fundamental features are not taken into account?
- Q:- What is meant by modification of root? What type of modification of root is found in the (a) Banyan tree (b) Turnip (c) Mangrove trees
- Q:- State the location and function of different types of meristem.
- Q:- Answer in one word or one line. (i) Give the common name of Periplaneta americana. (ii) How many spermathecae are found in earthworm? (iii) What is the position of ovaries in the cockroach? (iv) How many segments are present in the abdomen of cockroach? (v) Where do you find malphigian tubules?
- Q:-
Which of the following is not correct?
(a) Robert Brown discovered the cell.
(b) Schleiden and Schwann formulated the cell theory.
(c) Virchow explained that cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell. - Q:- What are macromolecules? Give examples.
- Q:- What is the average cell cycle span for a mammalian cell?
Recently Viewed Questions of Class 11 Biology
- Q:- Describe briefly the four major groups of Protozoa.
- Q:- Find out a qualitative test for proteins, fats and oils, amino acids and test any fruit juice, saliva, sweat and urine for them.
- Q:- How is a key helpful in the identification and classification of an organism?
- Q:- What essential role does the root endodermis play during mineral absorption in plants?
- Q:- Match the following:
Column I Column II
A T4 i Hypothalamus
B PTH ii Thyroid
C GnRH iii Pituitary
D LH iv Parathyroid - Q:- What are the following and where do you find them in animal body
(a) Chondriocytes
(b) Axons
(c) Ciliated epithelium - Q:-
Define oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?
- Q:- Define the term inflorescence. Explain the basis for the different types of inflorescence in flowering plants.
- Q:- Both a short day plant and a long day plant can flower simultaneously in a given place. Explain.
- Q:- Analyse the events during every stage of cell cycle and notice how the following two parameters change
(i) Number of chromosomes (N) per cell
(ii) Amount of DNA content (C) per cell
- All Chapters Of Class 11 Biology
- All Subjects Of Class 11