Which of the following statements is true?
lateral meristem
intercalary meristem
apical meristem
parenchyma
What is not true about sclereids ?
These are parenchyma cells with thickness lignified walls
These are elongated and flexible with tapered ends
These are commonly found in the shells of nuts andin the pulp of guava, pear etc
These are also called the stone cells.
Which is correct transport or conduction of substances?
organic food moves up through phloem
organic food moves up through xylem
Inorganic food moves upwardly and downwardly through phloem
Inorganic food moves upwardly and downwardly through xylem
Which one yields fibre?
planes of cell division
regions of meristematic activity
rate of cell growth
rate od shoot tip growth
Sclerenchyma fibres of phloem are called ___________
Sclerieds
bast fibres
Wood
Jute
The apical meristem of the root is present ____________.
in all the roots
only in radicals
only in tap roots
only in adventitious roots
By the activity of apical meristem-increases.
Growth
Length of Stem
Length of stem and root
Breadth of root & stem
Loading of phloem is related to ________________.
increases of sugar in phloem
elongation of phloem cell
separation of phloem parenchyma
strengthening of phloem fibre
A group of cells performing common functions and origin are known as
cell
tissue
organ
function
Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by ____________.
absence of secondary xylem
absence of secondary pholem
Presence of cortex
position of protoxylem