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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 |
Ans. a�(i); b�(ii); c�(iv); d�(iii); e�(v);
The constituents of phloem are:
→ Sieve tubes
→ Companion cells
→ Phloem parenchyma
→ Phloem fibres
Simple: Parenchyma/collenchyma/sclerenchyma
Complex: Phloem/xylem.
Tissue is a group of cells that are similar in structure and are organised together to perform a specific task.
Both xylem and phloem consist of more than one type of cells, which coordinate to perform a common function.
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Xylem
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Phloem
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Xylem tissue helps in the transport of water and minerals.
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Phloem tissue helps in the transport of food.
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Water is transported upwards from roots to aerial parts of plants
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Food is transported in both upward and downward directions.
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Transport in xylem requires physical forces such as transpiration pull.
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Transport of food in phloem requires energy inthe form of ATP.
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| 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) |