Cell wall is richly impregnated with silica in__________?

Related Mcqs:

1. Secondary cell wall of sclerenchyma cells is impregnated with_________________?

   A. Cellulose.
   B. Peptidoglycan and murein.
   C. Lignin.
   D. Pectin.

2. The cell wall is usually composed of two overlapping halves called epitheca and hypotheca in__________?

   A. Diatoms
   B. Desmids
   C. Pyrrophyta
   D. Chlorophyta

3. Cell wall is extremely well preserved in fossil specimens in__________?

   A. Diatoms
   B. Dinoflagellates
   C. Slime moulds
   D. None of these

4. Who opposed the idea the cell is an empty space bounded by thick wall?

   A. Lorenz Oken
   B. Schwann
   C. Robert Brown
   D. Rudolph Virchow

5. The cell wall of oomycetes is chiefly composed of___________?

   A. Chitin
   B. Cellulose
   C. Lignin
   D. Proteins

6. Attachment of the bacteriophage with the receptor site on the bacterial cell wall involves_______________?

   A. Strong covalent bond between virion and the receptor site.
   B. Week chemical unior between them
   C. Both A and B depending upon the phage
   D. None of these

7. In which of the following pigments major energy reserves and cell wall are like plants?

   A. Rhodophyta
   B. Chlorophyta
   C. Phaeophyta
   D. Chrysophyta

8. Cyanobacteria have ________ cell wall?

   A. Gram +ve.
   B. Gram – ve.
   C. Acid fast
   D. Cellulose rich

9. Cell wall is absent in___________?

   A. Cocci
   B. Bacilli
   C. Mycobacterium
   D. Mycoplasma

10. ___________ component of cell wall has grreat affinity with water?

    A. Lignin
    B. Cellulose
    C. Pectin
    D. All of these