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. |
In pteridophyta and gymnosperms which cells are present in place of companion cell
Collenchyma differs from parenchyma in
Which simple tissue is found in pulp of fruits like guava, pear and sapota ?
Which one of the following statements pertaining to plant structure is correct