MCQ : The Fundamental Unit of life Chapter 5 Class 9 Science Biology
1. Which Plastids are colourless ?
(i) Chromoplasts
(ii) Chloroplast
(iii) Leucoplast
(iv) All of the above
(v) None of the above
Answer:
(iii) Leucoplast
2. An unripe green fruit changes colour when it ripens. The reason being
(i) Chromoplasts changes to chlorophyll
(ii) Chromolasts changes to chromosomes
(iii) Chromosomes changes to chlorophyll
(iv) Chloroplast changes to chromoplasts
(v) None of the above
Answer:
(iv) Chloroplast changes to chromoplasts
3. The phenomenon where cytoplasm shrink in a hypertonic medium is called :
(i) Frontolysis
(ii) Plasmolysis
(iii) Acidolysis
(iv) Allolysis
(v) None of the above
Answer:
(ii) Plasmolysis
4. Which one of the following is called the energy currency of the cell
(i) Endoplasmic reticulum
(ii) Oxygen
(iii) ATP
(iv) Mitochondria
(v) None of the above
Answer:
(iii) ATP
5. Which one of the following is called the powerhouse of the cell
(i) Mitochondria
(ii) ATP
(iii) Lysosomes
(iv) Red blood cells
(v) None of the above
Answer:
(i) Mitochondria
6. Who coined the term 'cell'
(i) Gorbachev
(ii) Himmler
(iii) Robert Hooke
(iv) Anton Von Leeuwenhoek
(v) None of the above
Answer:
(iii) Robert Hooke
7. Which one of the following statement is incorrect ?
(i) Cytoplasm is also known as protoplasm
(ii) Lysosomes are known as the sucide bags of the cell
(iii) Mitochondria has its own DNA
(iv) All of the above are incorrect
(v) None of the above
Answer:
(i) Cytoplasm is also known as protoplasm
8. Which of the following is not a function of the vacuole in plants ?
(i) They store toxic metabolic wastes
(ii) They help with the process of of cell division
(iii) They help to maintain turgidity
(iv) They provide structurally support
(v) None of the above
Answer:
(ii) They help with the process of cell division
9. Where are the essential proteins and lipids required for cell membrane, manufactured ?
(i) Lysosome
(ii) Chromosomes
(iii) Endoplasmic recticulum
(iv) Mitochondria
(v) None of the above
Answer:
(iii) Endoplasmic recticulum
10. The peocess by which water moves through a semi - permeable membrane from a region of high concentration to a region of low concentrayion, thereby equalizing water concentration is called :
(i) Evaporation
(ii) Diffusion
(iii) Osmosis
(iv) All of the above
(v) None of the above
Answer:
(iii) Osmosis
11. The organelle that is called the powerhouse of the cell is
(i) Golgi bodies
(ii) Lysosomes
(iii) Mitochondria
(iv) Ribosome
Answer:
(iii) Mitochondria
12. Vacuoles provide
(i) Rigidity
(ii) Turgidity
(iii) Shape
(iv) Both (i) and (ii)
Answer:
(ii) Turgidity
13. The process which occurs when dry raisins are soaked in water is called
(i) Osmosis
(ii) Endosmosis
(iii) Endocytosis
(iv) Diffusion
Answer:
(ii) Endosmosis
14. Before scraping the inner side of cheek to prepare a temporary mount of cheek cell, the mouth is rinsed to
(i) remove food particles
(ii) make it alkaline
(iii) avoid injury
(iv) make it acidic
Answer:
(iv) make it acidic
15. An undefines nuclear region of Prokaryotes is known as
(i) nucleus
(ii) nucleoid
(iii) nucleous
(iv) nucleic acid
Answer:
(ii) nucleoid
16. While observing an onion peel slide under the microscope, paheli noted its characetristics. Which of these does she not see ?
(i) cells attached edge to edge without intercellular space
(ii) Presence of single nucleus in the cell
(iii) Presence of the cell wall around each rectangular cell
(iv) All of these
Answer:
(iii) Presence of the cell wall around each rectangular cell
17. A cover slip is placed over the specimen to
(i) prevent the tissue from dying
(ii) Prevent glycerine from leaking out
(iii) Remove extra stain and water
(iv) crush the cells in order to see the organelles clearly.
Answer:
(iv) crush the cells in order to see the organelles clearly.
18. While observing a human cheek cell, under a microscope, what students will not observe
(i) Nucleous
(ii) Mitochondria
(iii) Nucleus
(iv) Chloroplast
Answer:
(i) Nucleous
19. To prepare a temporary stained mount of onion peel, a student must take the material from the :
(i) green leaf of spring onion
(ii) thin layer of fleshy leaf base of onion
(iii) dry scale leaf of onion
(iv) crushed pulp of onion
Answer:
(ii) thin layer of fleshy leaf base of onion
20. A cell organelle that is not surrounded by a membrane is the
(i) chloroplast
(ii) ribosome
(iii) endoplasmic recticulum
(iv) Golgi appratus
Answer:
(ii) ribosome