MCQs ON PRACTICAL SKILLS- CLASS IX BIOLOGY
(Experiment No. - 1)

1. Human cheek cells are commonly stained with
a. methylene blue
b. safranin
c. acetocarmine
d. eosine

2. Definite shape of cell is seen in case of
a. animal cell
b. plant cells
c. both animal and plant cells
d. neither animal nor plant cells

3. Coverslip is put on the mounted material on a slide very gently to
a. avoid oozing of stain
b. avoid oozing of glycerine
c. avoid entry of air bubbles
d. avoid the crushing of mounted materials

4. Name the stain which is commonly used to study plant cells
a. methylene blue
b. cotton blue
c. safranin
d. acetocarmine

5. Plant cells generally have
a. No vacuoles at all
b. all equal sized vacuoles
c. small but large number of vacuoles
d. big but less number of vacuoles

6. We generally mount the material on slide
a. on left side of slide
b. on right side of slide
c. in the centre
d. both (a) and (b)

7. Cells are focused in microscope under
a. 40X
b. 100X
c. 10X
d. any of these

8. In animal cheek cells, nucleus is generally located
a. near the plasma membrane
b. on one side
c. in the centre
d. any where in the cell

9. In plant cell, nucleus is generally placed
a. in the centre
b. on one side of the cell
c. attached to cell membrane
d. on one corner of the cell

10.Temporary mount of a tissue is made in
a. wax
b. alcohol
c. xylene
d. glycerine 

11. The outermost covering of a plant cell is
a. cell wall
b. nuclear membrane
c. plasma membrane
d. middle lamella

12. The organelle not present in human cheek cell is
a. nucleus
b. mitochondria
c. cell membrane
d. chloroplast

13. The outer most layer of human cheek cell is
a. cell wall
b. nuclear membrane
c. plasma membrane
d. middle lamella

14. The shape of onion peel cells taken for observation under microscope is
a. round
b. elliptical
c. rectangular
d. round

15. The shape of nucleus in a plant cell is
a. round
b. elliptical
c. rectangular
d. triangular

16. The number of lenses in a compound microscope is
a. 2
b. 1
c. 3
d. 4

17. During observation of an onion peel, cells are first seen under
a. high power
b. low power
c. medium power
d. none of the above

18. To prepare a mount of human cheek cell, the sample is collected from
a. outer side of cheek with a blade
b. inner side of cheek with a blade
c. outer side of cheek with a toothpick
d. inner side of cheek with a toothpick.

19. Which one of the following cell constituents cannot be seen while observing a human cheek cell?
a. nucleus
b. cell wall
c. cytoplasm
d. cell membrane

20. To observe cells in an onion peel, we must prepare the slide by mounting on it
a. crushed pulp of onion
b. dry scale leaf
c. green leaf of onion
d. thin layer of fleshy onion

21. The cellular component not seen under a compound microscope while observing onion peel
a. chromosome
b. cell wall
c. nucleus
d. cytoplasm

22. Cells are stained to
a. nourish the cell
b. highlight the cell organelles
c. make the cell turgid
d. help in cell multiplication

23. human cheek cell stained in methylene blue and mounted in glycerine were observed under a compound microscope. The components of cell which would be seen are
a. cell wall, cytoplasm, nucleus
b. plasma membrane, cytoplasm, nucleus
c. plasma membrane, cytoplasm, nucleus, mitochondria
d. plasma membrane, nucleus, mitochondria lysosomes

24. Magnifying power of a microscope is calculated by
a. multiplying the power of objective lens and eye piece
b. multiplying the power of objective lens with the distance between the objective lens and the specimen
c. adding up the power of objective lens and eye piece
d. subtracting the power of objective lens from that of eye piece.

25. Glycerine is used to prepare a temporary mount of a tissue due to the following reason
a. to colour the specimen
b. to avoid drying up of the specimen quickly
c. to avoid entry of air bubbles
d. none of the above

26.The less stained central part of onion peel cell is
a. nucleus
b. cytoplasm
c. vacuole
d. cell wall

27.Which one of the following is the correct sequence for preparing a mount of onion peel
a. (i) take out onion peel (ii) keep the peel on the slide (iii) add a few drop of glycerine on it (iv) add few drops of safranin stain (v) cover it up with a coverslip
b. (i) take out onion peel (ii) keep the peel in water in a petridish (iii) add a few drops of safranin stain and transfer to a slide (iv) add a drop of glycerine (v) cover it up with a coverslip
c. (i) take out onion peel (ii) Keep it on a slide and add safranin stain (iii) transfer it to water in a petridish (iv) remove water and add glycerine (v) cover it up with a coverslip
d. (i) take out onion peel (ii) cover it up with a coverslip (iii) on a petridish, add water to clean (iv) add a drop of glycerine (v) add a few drops of safranin stain

28. Given below four operations for preparing a temporary mount of human cheek cells- 
(i) taking scraping from inner side of cheek and spreading it on a clean slide. 
(ii) putting a drop of glycerine on the material. 
(iii) adding 2-3 drops of methylene blue. 
(iv) rinsing the mouth with fresh water and disinfectant solution. 

The correct sequence of these operation is
a. i ii iii iv
b. iv i iii ii
c. iv i ii iii
d. i iii ii iv