Question
differences between : Xylem tissue and Phloem tissue
| Xylem tissue | Phloem tissue | ||
| $1$. | It transports water and mineral ions absorbed by the roots to different parts of the plant. | $1$. | It transports organic products of photosynthesis from the leaves to different parts of the plant. |
| $2$. | The principal conducting elements of xylem are tracheids and tracheae (vessels). | $2$. | The principal conducting elements of phloem are sieve cells and sieve tubes with companion cells. |
| $૩$. | The conduction occurs only in upward direction. | $3$. | The conduction occurs in both upward and downward directions. |
| $4$. | It conducts only water and mineral ions. | $4$. | Along with the sugars it conducts amino acids, plant hormones and several other substances. |
| $5$. | For conduction of water in the xylem, the suction force due to transpiration is the principal force. | $5$. | For conduction of organic food substances the energy required is obtained from ATP. |
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| Group $16$ | Group $17$ |
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| $-$ | $A$ |
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| $B$ | $C$ |