All the following statements regarding sieve tube elements are true except
All the following statements regarding sieve tube elements are true except
- A
Their end walls have perforated sieve plates which become impregnated with lignin at maturity
- B
They possess peripheral cytoplasm as well as a large vacuole
- C
Distinct proteinaceous inclusions, the P-proteins are seen evenly distributed throughout the lumen
- D
Long, slender, tube-like structures arranged in longitudinal series
Similar Questions
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 |
Which combination of tissues acts together to provide the support to the hypocotyl of a seedling
Which combination of tissues acts together to provide the support to the hypocotyl of a seedling
Definitions / Explanation :
$(i)$ Conjoint vascular bundles
$(ii)$ Secondary growth
Definitions / Explanation :
$(i)$ Conjoint vascular bundles
$(ii)$ Secondary growth
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
What is the difference between lenticels and stomata ?
What is the difference between lenticels and stomata ?