What are the characteristic differences found in the vascular tissue of gymnosperms and angiosperms ?
What are the characteristic differences found in the vascular tissue of gymnosperms and angiosperms ?
| Gymnosperms | Angiosperms |
| $(i)$ Gymnosperms do not possess vessels in their xylem tissue. |
$(i)$ There are vessels in xylem tissue. |
| $(ii)$ Phloem tissue lacks companion cells. | $(ii)$ Phloem tissue posses companion cells. |
Similar Questions
Vascular tissues in flowering plants develop from
Vascular tissues in flowering plants develop from
- [AIPMT 2008]
Match the following
Column $-I$
Column $-II$
$(a)$ Dicot leaf
$(p)$ Polyarch
$(b)$ Dicot stem
$(q)$ Pallisade and spongy mesophy $II$
$(c)$ Monocot root
$(r)$ Endarch
$(d)$ Monocot leaf
$(s)$ Bulli form Cell
Match the following
| Column $-I$ | Column $-II$ |
| $(a)$ Dicot leaf | $(p)$ Polyarch |
| $(b)$ Dicot stem | $(q)$ Pallisade and spongy mesophy $II$ |
| $(c)$ Monocot root | $(r)$ Endarch |
| $(d)$ Monocot leaf | $(s)$ Bulli form Cell |
Choose correct sentences :
$(1)$ The meristem which present at the tips of roots and shoots are called apical meristem
$(2)$ Apical meristem are secondary meristem
$(3)$ Intercalary meristem is the meristem that occurs in the mature region of roots and shoots of many plants and appear later than primary meristem :
$(4)$ Fascicular vascular cambium and interfascicular cambium are lateral meristem
Choose correct sentences :
$(1)$ The meristem which present at the tips of roots and shoots are called apical meristem
$(2)$ Apical meristem are secondary meristem
$(3)$ Intercalary meristem is the meristem that occurs in the mature region of roots and shoots of many plants and appear later than primary meristem :
$(4)$ Fascicular vascular cambium and interfascicular cambium are lateral meristem
$(i)$ The ...$a$... help in maintaining the pressure gradient in the sieve tubes
$(ii)$ Stomata regulate the process of ....$b$..... and gaseous exchange
$(i)$ The ...$a$... help in maintaining the pressure gradient in the sieve tubes
$(ii)$ Stomata regulate the process of ....$b$..... and gaseous exchange
Assertion : In angiosperms, the conduction of water is more efficient because their xylem has vessels.
Reason : Conduction of water by vessel elements is an active process with energy supplied by xylem parenchyma rich in mitochondria
Assertion : In angiosperms, the conduction of water is more efficient because their xylem has vessels.
Reason : Conduction of water by vessel elements is an active process with energy supplied by xylem parenchyma rich in mitochondria
- [AIIMS 2006]