Class 9th Science Chapter – 5 The Fundamental Unit of Life
| Textbook | NCERT |
| Class | 9th |
| Subject | Science |
| Chapter | 5th |
| Chapter Name | The Fundamental Unit of Life |
| Category | Class 9th Science |
| Medium | English |
| Source | Last Doubt |
| Class 9th Science Chapter – 5 The Fundamental Unit of LifeMCQ with Answers What is fundamental unit of life for Class 9, Why is the fundamental unit of life, What is the fundamental unit of life very short answer, Why is the cell called the functional unit of life Ncert Class 9, What is the fundamental unit of life class 9 True or false, Who discovered the cell, What is the structure of cell, What is the meaning of protoplasm, Which is the smallest cell, Who is the father of biology, Who is father of nucleus. |
Class 9th Science Chapter 5 The Fundamental Unit of Life
Chapter – 5
The Fundamental Unit of Life
MCQ
| (1) Organelle without a cell membrane is? A. Ribosome B. Golgi apparatus C. Chioroplast D. Nucleus Answer – (A) Ribosome |
| (2) Which of the following can be made into crystal? A. A bacterium B. An Amoeba C. A virus CA sperm Answer – (C) A virus |
| (3) Chromosomes are made up of? A. DNA B. Protein C. DNA and protein D. RNA Answer – (C) DNA and protein |
| (4) Which of these options are not a function of ribosomes? (i) It helps in manufacture of protein molecules. (ii) It helps in manufacture of enzymes. (iii) It helps in manufacture of hormones. (iv) It helps in manufacture of starch molecules. A. (i) and (ii) B. (ii) and (iii) C. (iii) and (iv) D. (iv) and (i) Answer – (C) (iii) and (iv) |
| (5) A cell will swell up if? A. The concentration of water molecules in the cell is higher than the concentration of water molecules in the surrounding medium. B. The concentration of water molecules in the surrounding medium is higher than water molecules concentration in the cell. C. The concentration of water molecules is same in the cell and in the surrounding medium. D. Concentration of water molecules does not matter. Answer – (B) the concentration of water molecules in the surrounding medium is higher than water molecules concentration in the cell. |
| (6) Following are a few definitions of osmosis? A. Movement of water molecules from a region of higher concentration to a region of lower concentration through a semi-permeable membrane. B. Movement of solvent molecules from its higher concentration to lower concentration. C. Movement of solvent molecules from higher concentration to lower concentration of solution through a permeable membrane. D. Movement of solute molecules from lower concentration to higher concentration of solution through a semi permeable membrane. Answer – (A) Movement of water molecules from a region of higher concentration to a region of lower concentration through a semi-permeable membrane. |
| (7) Find out the false sentence? A. Nucleus is involved with the formation of lysosomes. B. Nucleus, mitochondria and plastid have DNA, hence they are able to make their own structural proteins. C. Mitochondria is said to be the power house of the cell as ATP is generated in them. D. Cytoplasm is called as protoplasm. Answer – (A) Nucleus is involved with the formation of lysosomes. |
| (8) Which cell organelle plays a crucial role in detoxifring many poisons and drugs in a cell? A. Golgi apparatus B. Lysosomes C. Smooth endoplasmic reticulum D. Vacuoles Answer – (C) Smooth endoplasmic reticulum |
| (9) Plasmolysis in a plant cell is defined as? A. Breakdown (lysis) of plasma membrane in hypotonie medium B. Shrinkageof cytoplasm in hypertonic medium C. Shrinkage of nucleoplasm D. None of them Answer – (B) shrinkageof cytoplasm in hypertonic medium |
| (10) Which of these is not related to endoplasmic reticulum? A. It behaves as a transport channel for proteins between nucleus and cytoplasm. B. It transports materials between various regions in the cytoplasm. C. It can be the site of energy generation. D. It can be the site for some biochemical activities of the cell. Answer – (C) It can be the site of energy generation. |
| (11) Which of the following are covered by a single membrane? A. Mitochondria B. Vacuole C. Lysosome D. Plastid Answer – (B) Vacuole |
| (12) The proteins and lipids, essential for building the cell membrane, are manufactured by A. Rough endoplasmic reticulum B. Golgi apparatus C. Plasma membrane D. Mitochondria Answer – (A) Rough endoplasmic reticulum |
| (13) Find out the correct sentence? A. Enzymes packed in lysosomes are made through RER (rough endoplasmic reticulum). B. Rough endoplasmic reticulum and smooth endoplasmic reticulum produce lipid and protein respectively. C. Endoplasmic reticulum is rélated to the destruction of plasma membrane. D. Nucleoid is present inside the nucleoplasm of eukaryotic nucleus. Answer – (A) Enzymes packed in lysosomes are made through RER (rough endoplasmic reticulum). |
| (14) The cell organelle involved in forming complex sugars from simple sugars are? A. Endoplasmic reticulum B. Ribosomes C. Plastids D. Golgi apparatus Answer – (D) Golgi apparatus |
| (15) Which out of the following is not a function of vacuole? A. Storage B. Providing turgidity and rigidity to the cell C. Waste excretion D. Locomotion Answer – (D) Locomotion |
| (16) The undefined nuclear region of prokaryotes is also known as? A. Nucleus B. Nucleolus C. Nucleic acid D. Nucleoid Answer – (D) Nucleoid |
| (17) Amoeba acquires its food through a process, termed? A. Exocytosis B. Endocytosis C. Plasmolysis D. Exocytosis and endocytosis both Answer – (B) Endocytosis |
| (18) Cell wall of which one of these is not made up of cellulose? A. Bacteria B. Hydrilla C. Mango tree D. Cactus Answer – (A) Bacteria |
| (19) Silver nitrate solution is used to study? A. Endoplasmic reticulum B. Golgi apparatus C. Nucleus D. Mitochondria Answer – (B) Golgi apparatus |
| (20) Organelle other than nucleus, containing DNA is? A. Endoplasmic reticulum B. Golgi apparatus C. Mitochondria D. Lysosomes Answer – (C) Mitochondria |
| (21) Kitchen of the cell is? A. Mitochondria B. Endoplasmic reticulum C. Chioroplast D. Golgi apparatus Answer – (C) Chioroplast |
| (22) Lipid molecules in the cell are synthesised by? A. Smooth endoplasmic reticulum B. Rough endoplasmic reticulum C. Golgi apparatus D. Plastids Answer – (A) Smooth endoplasmic reticulum |
| (23) Cell theory was given by? A. Schleiden and Schwann B. Virchow C. Hooke D. Haeckel Answer – (A) Schleiden and Schwann |
| (24) Cell arises from pre-existing cell was stated by? A. Haeckel B. Virchow C. Hooke D. Schleiden Answer – (B) Virchow |
| (25) The only cell organelle seen in prokaryotic cell is? A. Mitochondria B. Ribosomes C. Plastids D. Lysosomes Answer – (B) Ribosomes |
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