Question

1.Enumerate any two characteristic features of permanent tissues .
2.Skeletal muscles are voluntary in nature. Why?​

Answer 1

Enumerate any two characteristic features of permanent tissues .

Permanent tissue:

Cells of permanent tissues are not capable of cell division, for which they are called Permanent tissue. They are originated from Meristamatic tissues. All tissues other than the Meristamatic ones are permanent tissues.

Characteristics of Permanent tissue:

1.  Cells of these tissues have no power of division.

2.  Cells are well developed and properly shaped.

3.  Cell wall is comparatively thick.

4.  Nucleus of the cells are bigger and cytoplasm is dense.

5.  Usually there are vacuoles in the cell.

6.  There may have intercellular spaces in between cells.

Skeletal muscles are voluntary in nature. Why?​

Voluntary muscles are those muscles which are controlled by the will of an individual i.e. controlled by the individual's brain. The person can take decision on the movement of the muscle. Hence the movement of the skeletal muscle is decided by our own will hence being a voluntary muscle.

Answer 2

Answer:

Characteristics of Permanent tissue:

• Cells of these tissues have no power of division.
• Cells are well developed and properly shaped.
• Cell wall is comparatively thick.
• Nucleus of the cells are bigger and cytoplasm is dense.
• Usually there are vacuoles in the cell.
• There may have intercellular spaces in between cells.

Skeletal Muscles :

We move them when we want to, that is they are controlled by our will. They are not involuntary in the sense that they do not move on their own. So they are voluntary in nature.