Important questions from Class 8 Science Chapter 8 | Cell – Structure and Functions can be found here.

1. Who discovered cells and in which year?
   a) Robert Brown – 1663
   b) Robert Hooke – 1663
   c) Robert Hooke – 1665
   d) Rudolf Virchow – 1664
2. The control unit of the cell is
   a) nucleus
   b) cell wall
   c) cytoplasm
   d) All of these
3. Which of the following is a sac like structure that store food, waste and water?
   a) Lysosomes
   b) Chromosomes
   c) Nucleus
   d) Vacuole (correct)
4. Which of the following statements is the correct definition of a cell?
   a) The cell is the smallest part of a living being.
   b) The cell is the part that can be seen only under a microscope
   c) The cell is the structural and functional unit of life
   d) The cell is the starting point in the life of all organisms
5. Which of the following are the dense thread like structure present in the nucleus?
   a) Chromosomes
   b) DNA
   c) Centrosome
   d) Chromatin
6. The largest cell is of
   a) bacteria-0.1mm
   b) ostrich egg-180mm140mm c) ostrich egg-170mm 130mm
   d) hen’s egg
7. Unit of inheritance is called
   a) cell
   b) nucleus
   c) tissue
   d) gene
8. Living substances of the cell is called
   a) protoplasm
   b) cytoplasm
   c) nucleoplasm
   d) chromosomes
9. Several coloured bodies in the cytoplasm of the cells of tradescantia leaf are
   a) vacuole
   b) mitochondria
   c) plastids
   d) organelle
10. Paramecium is an example of
    a) static organisms
    b) multicellular organisms
    c) unicellular organisms
    d) none of the above
11. Which of these options are not the characteristic feature of prokaryotic cell?
    1) the word prokaryotic means primitive nucleus
    2) there is nuclear membrane
    3) all organisms other than bacteria and blue green algae are called prokaryotes
    4) the cells having nuclear material without nuclear membrane are termed prokaryotic cell
    1&2
    2&3
    3&4
    4&1
12. Name the projections that appear and disappear as Amoeba feeds or moves
    a) pseudopodia
    b) psuedopodia
    c) speudopodia
    d) none of the above
13. Name the stain used to stain to stain the cheek cells
    a) safranin
    b) iodine
    c) methylene blue
    both b and c
14. Expand DNA
    a) deoxyribonucleic acid
    b) doexyribonuclecleic acid
    c) deoxyribonucliec acid
    d) deoxiribonucleceic acid
15. Which of these is not related to the cell membrane?
    a) Cell membrane is known as plasma membrane
    b) It does not allow movement of substances
    c) Nucleus &cytoplasm are enclosed within the cell membrane
    d) It controls the entry and exit of materials from cell
16. A group of similar cells combine to form
    a) organ
    b) organism
    c) tissue
    d) organelles
17. Which instrument is most commonly used to observe the cellular organization of living organisms?
    a) Lens
    b) Binocular
    c) Compound microscope
    d) Periscope
18. Spot the odd one out from the following structurers present in an animal cell
    a) Cell membrane
    b) Nucleus
    c) Chloroplast (correct)
    d) Vacuole
19. Identify the statement which is true for cells
    a) Cells can be easily seen with naked eyes
    b) Insect’s egg is not a cell
    c) A single cell can perform all the functions in a unicellular organism
    d) The size and shape of the cells is uniform in multicellular organisms
20. Under a microscope Paheli observes a cell that has a nucleus and it is long and branched, but no cell wall.
    a) red blood cell
    b) plant cell
    c) muscle cell
    d) nerve cell

Answers

1. Robert Hooke – 1665
2. Nucleus
3. Vacuole
4. The cell is the structural and functional unit of life
5. Chromatin
6. ostrich egg – 170 mm x 130mm
7. Gene
8. Protoplasm
9. Plastids
10. Unicellular organisms
11. 2 & 3 (There is nuclear membrane
    & all organisms other than bacteria and blue green algae are called prokaryotes)
12. Pseudopodia
13. Iodine and Methylene blue
14. Deoxyribonucleic acid
15. It does not allow movement of substances
16. Tissue
17. Compound microscope
18. Chloroplast
19. A single cell can perform all the functions in a unicellular organism
20. nerve cell