Location / Function :
$(i)$ Casparian strips
$(ii)$ Starch sheath
Location / Function :
$(i)$ Casparian strips
$(ii)$ Starch sheath
$(i)$ Location : In cells of endodermis of root of dicot plant, thickening of suberin and lignin (like wax) is on radial wall in the form of a strip.
$\Rightarrow$ Function : Impermeable for water.
$(ii)$ Location : In endodermis of sunflower stem, inner parenchymatous taus cells possess starch grains.
$\Rightarrow$ Function: That stores starch.
Similar Questions
In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to:
$(a)$ secretion of secondary metabolities and their deposition in the lumen of vessels.
$(b)$ deposition of organic compounds like tannins and resins in the central layers of stem.
$(c)$ deposition of suberin and aromatic substances in the outer layer of stem.
$(d)$ deposition of tannins, gum, resin and aromatic substances in the peripheral layers of stem.
$(e)$ presence of parenchyma cells, functionally active xylem elements and essential oils.
Choose the correct answer from the options given below:
In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to:
$(a)$ secretion of secondary metabolities and their deposition in the lumen of vessels.
$(b)$ deposition of organic compounds like tannins and resins in the central layers of stem.
$(c)$ deposition of suberin and aromatic substances in the outer layer of stem.
$(d)$ deposition of tannins, gum, resin and aromatic substances in the peripheral layers of stem.
$(e)$ presence of parenchyma cells, functionally active xylem elements and essential oils.
Choose the correct answer from the options given below:
- [NEET 2022]
What is the difference between lenticels and stomata ?
What is the difference between lenticels and stomata ?
The cross-section of a plant material showed the following features when viewed under the microscope.
$(A)$ The vascular bundles were radially arranged.
$(B)$ Four xylem strands with exarch condition of protoxylem.
To which organ should it be assigned?
The cross-section of a plant material showed the following features when viewed under the microscope.
$(A)$ The vascular bundles were radially arranged.
$(B)$ Four xylem strands with exarch condition of protoxylem.
To which organ should it be assigned?
Definitions / Explanation :
$(i)$ Conjoint vascular bundles
$(ii)$ Secondary growth
Definitions / Explanation :
$(i)$ Conjoint vascular bundles
$(ii)$ Secondary growth