Q8 of 386 Page 155

Differntiate between voluntary and involuntary muscles. Give an example of each type.

Differences between voluntary and involuntary muscles:

Voluntary Muscles	Involuntary Muscles
They are known as striated muscles.	They are known as unstriated muscles.
They show alternate light and dark bands.	These muscles do not show such bands.
They function as per the direction of a conscious will.	They function on their own independent of conscious will
Example: Skeletal muscles	Example: Smooth muscles

Draw and identify different elements of phloem.

Write true (T) and false (F).

(a) Epithelial tissue is protective tissue in animal body.

(b) The lining of blood vessels, lung alveoli and kidney tubules are all made up of epithelial tissue.

(d) Epithelial layer is permeable layer.

(e) Epithelial layer does not allow regulation of materials, beyween body and external environment.

Differentiate the following activities on the basis of voluntary (v) or involuntary (iv) muscles

(a) Jumping of frog

(b) pumping of heart

(d) movement of chocolate in your intestine

Fill in the blanks

(a) Lining of blood vessels is made up of .....

(b) Lining of small intestine os made up of .....

(d) Epithelial cells with cilia are found in ......of body.