Difference Between Xylem and Phloem
Difference Between Xylem and Phloem
Difference between Xylem and Phloem vessels
Xylem | Phloem |
It consists of tracheids , vessels, xylem parenchyma, xylem fibres. Have dead long and hollow vessels | It consists of sieve tubes, companion cells, phloem parenchyma and phloem fibres. Have living thin tubes placed end to end. |
Absence of any cross wall. | Presence of sieve plates at the ends of sieve tube cells. |
Provides cell wall thickenings | Sieve tube is filled with cytoplasm |
xylem fibres are smaller Prevents vessels from collapsing. | Phloem fibres are larger. Companion cells contain nuclei and control activities of sieve tubes. |
Movement of water is in upward direction from soil to leaves. | Transport of substances in all directions to all parts of the plant. |
The only living cell is xylem parenchyma. It carries mainly water and minerals. | Except phloem fibres all cells are living. It carries organic compounds such as sugar and amino acids. |
Xylem carries mainly ____________________ | |||
| Right Option : A | |||
| View Explanation | |||
Phloem consists of _______________________ . | |||
| Right Option : B | |||
| View Explanation |
Which of the following are correct ? (a) In the phloem the sieve tube is filled with cytoplasm . (b) Phloem fibers are larger and the companion cells contain nuclei and control activities of sieve tubes. | |||
| Right Option : C | |||
| View Explanation | |||
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