Give differences : Sieve cell and Sieve tubes
Sieve cell | Sieve tubes |
$(1)$ In Gymnosperms it is a unicellular element. | $(1)$ It is a multicellular element located in angiosperms. |
$(2)$ it possess nucleus. | $(2)$ it lacks nucleus. |
$(3)$ There are no holes at certain places. | $(3)$ In sieve tubes end wall is porous like funnel. |
$(4)$Food transport capacity is less. | $(4)$ Food transport capacity is more. |
What is a permanent tissue ? It is a tissue
What is meant by permanent tissue ? Give its types.
All xylem elements when mature are dead except
Lignified cell wall is the characteristic feature of