CBSE Class 9 The Fundamental Unit Of Life: Cell / Biology MCQ Questions Class-9

MCQ questions on Biology Class-9 (Answers Are Given Below)

1. Human cheek cells are commonly stained with
   (a) safranin
   (b) methylene blue
   (c) acetocarmine
   (d) eosine
2. Name the stain which is commonly used to study plant cells
   (a) safranin
   (b) cotton blue
   (c) methylene
   (d) acetocarmine
3. Temporary mount of a tissue is made in
   (a) wax
   (b) alcohol
   (c) glycerine
   (d) xylene
4. Safranin is a reagent that is used to stain
   (a) nucleus
   (b) cytoplasm
   (c) cell wall
   (d) plasmodesmata
5. We generally mount the material in the slide
   (a) in the centre
   (b) on the left side of slide
   (c) on the right side of slide
   (d) both (b) and (c)
6. Coverslip is put on the mounted material on
   a slide very gently to
   (a) avoid the crushing of mounted material
   (b) avoid the entry of air bubble
   (C) avoid oozing of stain
   (d) avoid oozing of glycerine
7. Definite shape of cell is seen in case of
   (a) plant cell
   (b) animal cell
   (c) both animal and plant cell
   (d) neither animal nor plant cell
8. The outer most layer of human cheek cells is
   (a) cytoplasm
   (b) plasma membrane
   (c) cell wall
   (d) nuclear membrane
9. The outer most covering of a plant cell is
   (a) plasma membrane (b) cell wall
   (c) vacuole membrane (d) nuclear membrane
10. Cell wall in plant cells is made of
    (a) starch
    (b) glycogen
    (c) cellulose
    (d) chitin

11. The structural or functional unit of life is
    (a) tissue
    (b) organ
    (c) organ system
    (d) cell
12. Nucleus was discovered by
    (a) Robert Hooke (b) Robert Brown
    (c) Virchow
    (d) Schleiden
13. In plant cells , nucleus is generally placed
    (a) in the centre
    (b) on one side of the cell
    (c) attached to plasma membrane
    (d) on one corner of the cell
14. In human cheek cells, nucleus is generally
    located
    (a) near the plasma membrane
    (b) on one side
    (c) in the centre
    (d) on border
15. In plant cells, cell wall is
    (a) dynamic and live
    (b) rigid and nonliving
    (c) dynamic and non- living
    (d) rigid and living
16. In plant cells, cell to cell contact is maintained
    through
    (a) tight junctions (b) desmosomes
    (c) interdigitation (d) plasmodesmata
17. In plant cells, nucleus is generally
    (a) cylindrical
    (b) rounded
    (c) discoidal
    (d) elliptical
18. Plant cells generally have
    (a) big but less number of vacuoles
    (b) small but large number of vacuoles
    (c) no vacuole at all
    (d) all equal sized vacuoles
19. The cells are first focussed in microscope under
    (a) 40 x
    (b) 10x
    (c) 100 x
    (d) any of these

20. The organelle not present in human cheek cells
    is
    (a) nucleus
    (b) plasma membrane
    (c) mitochondria
    (d) chloroplast
21. The cell wall of plants is made up of cellulose
    which is a
    (a) lipid
    (b) protein
    (C) polysaccharide (d) amino acid

ANSWERS

1. (b);
2. (b);
3. (b);
4. (a);
5. (b);
6. (d);
7. (c)
8. (c);
9. (b);
10. (c);
11. (d)
12. (a);
13. (a);
14. (b);
15. (b);
16. (b);
17. (b).
18. (d);
19. (b);
20. (c);
21. (c)