PHG111-lec 4-B

parenchyma cells have thick cellulosic wall with no intercelluar spaces and used for support of plant

• true

• false

..... are dead cells with thick secondary cell wall for support

• parenchyma

• collenchyma

• sclerenchyma

phloem is formed from tracheids,vessels and parenchyma

• True

• false

phloem is formed from campanion cells,seive tubes and parenchyma

• true

• false

secondary thickening in xylem with lignin can take many shapes

• spiral

• annular

• reticulate

• all of the above

A secretory cavity that arises by separation of cell and subsequent formation of a secretory epithelium arises by separation of cell and subsequent formation of a secretory epithelium

• lysogenous

• Schizogenous

• Schizo-lysigenous

A secretory cavity that initially schizogenous but lysis occurs in cavities in later stages as the epithelium cells lining the space undergo autolysis further enlarging the space

• lyzogenous

• Schizogenous

• Schizo-lyzigenous

A secretory cavity that is formed by breakdown of the cell forming a cavity not bounded by definite epithelium

• Schizo-lyzigenous

• Lyzigenous

• Schizogenous

vascular tissue includes

• xylem

• parencyma

• collenchyma

• secretory tissue

Ground tissue includes

• collenchyma

• parenchyma

• all of the above

• sclerenchyma