Lysigenous cavity and Y-shaped xylem occurs in
Lysigenous intercellular spaces is type of intercellular space arises through dissolution of entire cells, which are therefore called as lysigenous cavity. These cavities of intercellular spaces store up water, gases and essential oils in them. The examples are commonly found in water plants and many monocotyledonous stems. The secretory cavities in Eucalyptus, Citrus and Gossypium are good examples. In monocot stem the vascular bundle encloses both xylem and phloem. Xylem is found towards the inner surface and phloem towards the outer surface. Cambium is absent. Hence, the vascular bundles are described as conjoint, collateral and closed. In the xylem, there are two metaxylem and two protoxylem vessels arranged in the shape of Y.
The transverse section of a plant shows following anatomical features: (a) Large number of scattered vascular bundles surrounded by bundle sheath (b) Large conspicuous parenchymatous ground tissue (c) Vascular bundles conjoint and closed (d) Phloem parenchyma absent Identify the category of plant and its part :
Select the incorrect statement regarding the anatomy of a typical monocotyledonous stem
Y-shaped arrangement of xylem vessels is found in
Lysigenous cavity in monocot stem vascular bundles develops by the dissolution of
Secondary growth usually does not occur in
Cortex and pith are not distinguished in
Hard bast (bundle cap) occurs in
Stem of date palm increases in girth due to activity of:
In monocot stems, secondary growth cannot occur, because vascular bundles are
Which type of vascular bundles are found in monocot stem?