Angular collenchyma occurs in
Cucurbita
Tagetes
Althaea
Salvia
Chlorenchyma is known to develop in the
pollen tube of pinus
cytoplasm of chlorella
mycelium of a green mould such as Aspergillus
spore capsule of a moss
The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is
maturing
elongating
widening
differentiating
Sieve tubes are suited for translocation of food because they possess
bordered pits
no end walls
broader lumen and perforated cross walls
no protoplasm
Cork is formed from
cork cambium (phellogen)
vascular cambium
phloem
xylem
Where do the Casparian bands occur?
Epidermis
Endodermis
Pericycle
Phloem
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
Which exposed wood will decay faster?
Sapwood
Softwood
Wood with lot of fibres
Heartwood
A narrow layer of thin walled cells found between phloem/bark and wood of a dicot is
cork cambium
endodermis
pericycle
Bordered pits are found in
sieve cells
vessel wall
companion cells
sieve tube wall
