|
Striated muscle |
Unstriated muscle |
Cardiac muscle |
| On the basis of structure: | ||
| Cells are cylindrical | Cells are long | Cells are cylindrical |
| Cells are not branched | Cells are not branched | Cells are branched |
| Cells are multinucleate | Cells are uninucleate | Cells are uninucleate |
| Alternate light and dark bands are present | There are no bands present | Faint bands are present |
| Its ends are blunt | Its ends are tapering | Its ends are flat and wavy |
| On the basis of location: | ||
| These muscles are present in body parts such as hands, legs, tongue, etc. | These muscles control the movement of food in the alimentary canal, the contraction and relaxation of blood vessels, etc. | These muscles control the contraction and relaxation of the heart |
Tissue is a group of cells that are similar in structure and are organized together to perform a specific task.
Epidermis is important for plants due to the following reasons
(i) it gives protection
(ii) helps in gaseous exchange
(iii) checks water loss
(iv) root hairs arising from epidermis helps in absorption of water and minerals.
Both xylem and phloem consist of more than one type of cells, which coordinate to perform a common function.
|
Xylem
|
Phloem
|
|
Xylem tissue helps in the transport of water and minerals.
|
Phloem tissue helps in the transport of food.
|
|
Water is transported upwards from roots to aerial parts of plants
|
Food is transported in both upward and downward directions.
|
|
Transport in xylem requires physical forces such as transpiration pull.
|
Transport of food in phloem requires energy inthe form of ATP.
|
| Xylem is made up of three types of dead cells (vessels, tracheids, xylem fibres) | There are three types of living cells (sieve tube cells, companion cells and phloem parenchyma) |
The three types of muscle fibres are:Striated muscles, smooth muscles (unstriated muscle fibre), and cardiac muscles.
Striated muscle fibres
Apical meristem is present at the growing tips of stems and roots.