What is not true about sclereids ?
These are parenchyma cells with thickened lignified walls
These are elongated and flexible with tapered ends
These are commonly found in the shells of nuts and in the pulp of guava, pear etc
These are also called the stone cells
Angular collenchyma occurs in
Cucurbita
Tagetes
Althaea
Salvia
What is true about a monocot leaf ?
Reticulate venation
Absence of bulliform cells from epidermis
Mesophyll not differentiated into palisade and spongy tissues
Well differentiated mesophyll
Out of diffuse porous and ring porous woods, which is correct ?
Ring porous wood, carries move water for short period
Diffuse porous wood carries more water
Ring porous wood carries more water when need is higher
Diffuse porous wood is less specialized but conducts water rapidly through out
Which mersitem helps in increasing girth ?
Lateral meristem
Intercalary mersitem
Primary meristem
Apical meristem
For union between stock and scion in grafting which one is the first to occur ?
Formation of callus
Production of plasmodesmata
Differentiation of new vascular tissues
Regeneration of cortex and epidermis
Cork cambium and vascular cambium are
parts of secondary xylem and phloem
parts of pericycle
lateral meristems
apical meristems