The Fundamental Unit of Life For Class 9 Biology MCQ Questions
The Fundamental Unit of Life For Class 9 Biology MCQ Questions with answers. This website provides the best material for student. As we know that most of the chapters are typical so read this multiple choice questions in easiest method and relax for the examination.
Q 1 – 1 μm is
(a) 10 –6 m
(b) 10 –9 m
(c) 10 –10 m
(d) 10 –3 m
10 –6 m
Q 2 – Which of the following can be made into crystals?
(a) A bacterium
(b) An Amoeba
(c) A virus
(d) A sperm
(c) A virus
Q 3 – Which plastids are colorless?
(a) Chromoplasts
(b) Chloroplast
(c)Leucoplasts
(d) All of the above
(c) Leucoplasts
Q 4 – Living cells were discovered by
(a) Robert Hooke
(b) Purkinje
(c) Leeuwenhoek
(d) Robert Brown
(c) Leeuwenhoek
Q 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 the same in the cell and in the surrounding medium.
(d) the concentration of water molecules does not matter.
(b) the concentration of water molecules in the surrounding medium is higher than water molecules concentration in the cell.
Q 6 – The process of plasmolysis in plant cells is defined as:
(a) Breakdown of the plasma membrane in a hypotonic solution.
(b) Shrinkage of cytoplasm in the hypertonic medium.
(c) Shrinkage of Nucleoplasm.
(d) None of these
(b) Shrinkage of cytoplasm in hypertonic medium
Q 7 – Engulfing of food materials or foreign bodies by cells like Amoeba is called
(a) diffusion
(b) endocytosis
(c) osmosis
(d) plasmolysis
(b) endocytosis
Q 8 – Chromosomes are made up of
(a) DNA
(b) Protein
(c) DNA and protein
(d) RNA
(c) DNA and protein
Q 9 – Animal cells lacking nuclei would also lack in
(a) Endoplasmic reticulum
(b) Chromosome
(c) Lysosome
(d) Ribosome
(b) Chromosome
Q 10 – The nucleus controls all the activities of the cell and acts as a site of DNA material and protein synthesis. It is composed of some components which all together give the nucleus its functionality. Here is shown a figure of the nucleus with some of its components labeled as A, B, C, and D. can you name these components correctly?
(a) A – Nucleons; B – Chromatin; C – Nuclear membrane; D – Nucleoplasm
(b) A – Nucleus; B – Chromatin; C – Nuclear membrane; D – Nucleoplasm
(c) A – Nucleolus; B – Chromatin; C – Nuclear membrane; D – Nucleoplasm
(d) A – Nucleolus; B – Chromatin; C – Nuclear membrane; D – Nuclear wall
(c) A – Nucleolus; B – Chromatin; C – Nuclear membrane; D – Nucleoplasm
The Fundamental Unit of Life For Class 9 Biology MCQ Questions
Q 11 – Which of these options are not a function of ribosomes?
(i) It helps in the manufacture of protein molecules.
(ii) It helps in the manufacture of enzymes.
(iii) It helps in the manufacture of hormones.
(iv) It helps in the manufacture of starch molecules.
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (iv) and (i)
(c) (iii) and (iv)
Q 12 – Middle lamella occurs:
(a) Inner to the primary wall
(b) Inner to secondary wall
(c) Outer to secondary wall
(d) Outer to the primary wall
(d) Outer to the primary wall
Q 13 – Which of these is not related to the endoplasmic reticulum?
(a) It behaves as a transport channel for proteins between the 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.
(c) It can be the site of energy generation.
Q 14 – The only cell organelle seen in prokaryotic cells is
(a) mitochondria
(b) ribosomes
(c) plastids
(d) lysosomes
(b) ribosomes
Q 15 – Cell arises from pre-existing cell was stated by
(a) Haeckel
(b) Virchow
(c) Hooke
(d) Schleiden
(b) Virchow
Q 16 – Following are a few definitions of osmosis:
Read carefully and select the correct definition.
(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 their 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 a higher concentration of solution through a semi-permeable membrane.
(a) Movement of water molecules from a region of higher concentration to a region of lower concentration through a semi-permeable membrane.
Q 17 – Name two cell regions containing their own genetic material.
(a) Mitochondria and Plastids
(b) Lysosomes and ribosomes
(c) Nucleus and mitochondria
(d) Golgi apparatus and endoplasmic reticulum
(a) Mitochondria and Plastids
Q 18 – Among the following statements which one is incorrect?
(a) Golgi apparatus 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) Lysosomes are called suicide bags as they eat up their own cells.
(d) Cytoplasm is called known as protoplasm.
.
(d) Cytoplasm is called known as protoplasm.
Q 19 – Cartilage matrix is digested during its osteogenesis through:
(a) Intracellular autophagic activity
(b) Extracellular lysosomal activity
(c) Intracellular heterophonic activity
(d) Both B and C
(b) Extracellular lysosomal activity
Q 20 – Plasmolysis in a plant cell is defined as
(a) breakdown (lysis) of the plasma membrane in hypotonie medium
(b) shrinkage of cytoplasm in hypertonic medium
(c) shrinkage of nucleoplasm
(d) none of them
(b) shrinkage of cytoplasm in hypertonic medium
The Fundamental Unit of Life For Class 9 Biology MCQ Questions
Q 21 – Who proposed the “Black Reaction”?
(a) Benda
(b) Camillo Golgi
(c) Schleiden
(d) None of them
(b) Camillo Golgi
Q 22 – Nuclei were first discovered by
(a) Strasburger
(b) Fontana
(c) Robert Brown
(d) Robert Koch
(c) Robert Brown.
Q 23 – Which of the following are covered by a single membrane?
(a) Mitochondria
(b) Vacuole
(c) Lysosome
(d) Plastid
(b) Vacuole
Q 24 – In plant cells, many substances important for life are stored in
(a) plastids
(b) mitochondria
(c) vacuoles
(d) lysosomes
(c) vacuoles
Q 25 – Which of the following are formed in bone marrow?
(a) RBC
(b) Cartilage cell
(c) Blood platelets
(d) Fibres
(a) RBC
Q 26 – 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 are said to be the powerhouse of the cell as ATP is generated in them.
(d) Cytoplasm is called protoplasm.
(a) Nucleus is involved with the formation of lysosomes.
Q 27 – Lipid molecules in the cell are synthesized by
(a) smooth endoplasmic reticulum
(b) rough endoplasmic reticulum
(c) Golgi apparatus
(d) plastids
(a) smooth endoplasmic reticulum
Q 28 – In a cell DNA is found in:
(a) Nucleus, mitochondria, and plastid
(b) Nucleus, mitochondria, and Golgi body
(c) Mitochondria, Golgi body, and plastid
(d) Nucleus, Golgi body, and plastid
(a) Nucleus, mitochondria and plastid
Q 29 – 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
(c) Smooth endoplasmic reticulum
Q 30 – Select the odd one out.
(a) The movement of water across a semi-permeable membrane is affected by the number of substances dissolved in it.
(b) Membranes are made of organic molecules like proteins and lipids.
(c) Molecules soluble in organic solvents can easily pass through the membrane.
(d) Plasma membranes contain chitin sugar in plants.
(d) Plasma membranes contain chitin sugar in plants.
Class 9 Biology MCQ The Fundamental Unit of Life
Q 31 Different layers of the cell wall are:
(a) Middle lamella and primary wall
(b) Middle lamella, Primary wall, and secondary wall
(c) Primary wall and secondary wall
(d) Wall layers exclude middle lamella
(b) Middle lamella, Primary wall, and secondary wall
Q 32 – 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
(a) rough endoplasmic reticulum
Q 33 – The primary function of the smooth endoplasmic reticulum in liver cells is
(a) protein synthesis
(b) catabolism of proteins
(c) detoxification
(d) carbohydrate metabolism
(c) detoxification
Q 34 – The kitchen of the cell is
(a) mitochondria
(b) endoplasmic reticulum
(c) chloroplast
(d) Golgi apparat3
Ans – (c) chloroplast
Q 35 – The undefined nuclear region of prokaryotes is also known as
(a) nucleus
(b) nucleolus
(c) nucleic acid
(d) nucleoid
Ans – (d) nucleoid
Q 36 – What is the full form of ATP?
(a) Adeno tri phosphate
(b) Adeno tri phosphorus
(c) Adenosine tetra phosphate
(d) Adenosine tri phosphate
Ans – (d) Adenosine tri phosphate
Q 37 – Cell theory was given by
(a) Schleiden and Schwann
(b) Virchow
(c) Hooke
(d) Haeckel
Ans – (a) Schleiden and Schwann
Q 38 – The cell organelle involved in forming complex sugars from simple sugars are
(a) endoplasmic reticulum
(b) ribosomes
(c) plastids
(d) Golgi apparatus
Ans – (d) Golgi apparatus
Q 39 – Match the Following:
| Column A | Column B |
| (a) Vacuoles | (i) Store proteins |
| (b) Lysosomes | (ii) Shrinkage of cells |
| (c) Outer membrane of mitochondria | (iii) Detoxification of poison and drugs |
| (d) Elaioplasts | (iv) Turgidity of plant cell |
| (e) Aleuroplast | (v) Porous in nature |
| (f) Hypertonic solution | (vi) Scavengers of cell |
| (g) RER | (vii) Storage and modification |
| (h) SER | (viii) Store oils |
| (i) Golgi apparatus | (ix) Protein synthesis |
| Column A | Column B |
| (a) Vacuoles | (iv) Turgidity of plant cell |
| (b) Lysosomes | (vi) Scavengers of cell |
| (c) Outer membrane of mitochondria | (v) Porous in nature |
| (d) Elaioplasts | (viii) Store oils |
| (e) Aleuroplast | (i) Store proteins |
| (f) Hypertonic solution | (ii) Shrinkage of cells |
| (g) RER | (ix) Protein synthesis |
| (h) SER | (iii) Detoxification of poison and drugs |
| (i) Golgi apparatus | (vii) Storage and modification |
Q 40 – 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
Ans – (d) Locomotion
Class 9 Biology MCQ The Fundamental Unit of Life
Q 41 – Amoeba acquires its food through a process, termed
(a) exocytosis
(b) endocytosis
(c) plasmolysis
(d) exocytosis and endocytosis both
Ans – (b) endocytosis
Q 42 – Cell wall of which one of these is not made up of cellulose?
(a) Bacteria
(b) Hydrilla
(c) Mango tree
(d) Cactus
Ans – (a) Bacteria
Q 43 – Organelle other than nucleus, containing DNA is
(a) endoplasmic reticulum
(b) Golgi apparatus
(c) mitochondria
(d) lysosomes
Ans – (c) mitochondria