Class 9 Science Chapter 5 MCQ Online Test. We covered all the Class 9 Science Chapter 5 MCQ Online Test in this post for free so that you can practice well for the exam.
Install our MCQTUBE Android app from the Google Play Store and prepare for any competitive government exams for free.
These types of competitive MCQs appear in exams like SSC, Railways, Defence, CDS, NDA, State PSC & CSE Exams, etc. We created all the competitive exam MCQs into several small posts on our website for your convenience.
You will get their respective links in the related posts section provided below.
Related Posts:
Class 9 Science Chapter 5 MCQ Online Test for Students
Which one of the following is an organelle that is NOT found in prokaryotic cells?
(a) Cell wall
(b) Mitochondria
(c) Plasma membrane
(d) Ribosome
Option b – Mitochondria
Which one of the following cell organelles mainly functions as a storehouse of digestive enzymes? ( Class 9 Science Chapter MCQs )
(a) Desmosome
(b) Ribosome
(c) Lysosome
(d) Vacuoles
Option c – Lysosome
The cell wall of any fungus is different from plants in having
(a) cellulose
(b) chitin
(c) cholesterol
(d) glycogen
Option b – chitin
In prokaryotic organisms, the nuclear region is not surrounded by a membrane. This undefined nuclear region is known as ( Class 9 Science Chapter MCQs )
(a) Nucleic acid
(b) Nucleoid
(c) Nucleolus
(d) Nucleosome
Option b – Nucleoid
Which one of the following functions is not carried out by the smooth endoplasmic reticulum?
(a) Transport of materials
(b) Synthesis of lipid
(c) Synthesis of protein
(d) Synthesis of steroid hormone
Option c – Synthesis of protein
Which one of the following is not a constituent of the cell membrane? ( Class 9 Science Chapter MCQs )
(a) Cholesterol
(b) Glycolipids
(c) Proline
(d) Phospholipids
Option c – Proline
The replication of DNA is a prerequisite for a eukaryotic cell to undergo division. During the cell cycle, the DNA replicates in
(a) S-phase
(b) G₁-phase
(c) G2-phase
(d) M-phase
Option a – S-phase
During which stage of mitosis does cytokinesis usually occur in animals? ( Class 9 Science Chapter MCQs )
(a) Prophase
(b) Metaphase
(c) Anaphase
(d) Telophase
Option d – Telophase
Lysosome arises from
(a) endoplasmic reticulum
(b) Golgi apparatus
(c) nucleus
(d) mitochondria
Option b – Golgi apparatus
The correct sequence of the cell cycle is ( Class 9 Science Chapter MCQs )
(a) S, G₁, G₂, M
(b) S, M, G₁, G₂
(c) G₁, S, G₂, M
(d) M, G₁, G₂, S
Option c – G₁, S, G₂, M
Biological membranes are composed of
(a) 40% proteins and 60% lipids
(b) 50% proteins and 50% lipids
(c) 70% proteins and 30% lipids
(d) 60% proteins and 40% lipids
Option d – 60% proteins and 40% lipids
F1 particles/oxysome/elementary particles are present in ( Class 9 Science Chapter MCQs )
(a) endoplasmic reticulum
(b) chloroplast
(c) mitochondria
(d) Golgi complex
Option c – mitochondria
“Endomitosis” refers to
(a) division of the nucleus without chromosomal division
(b) division of chromosomes without nuclear division
(c) division of cytoplasm
(d) None of the above
Option b – division of chromosomes without nuclear division
When the concentration of water and solutes on either side of the cell membrane is the same, the solution is said to be ( Class 9 Science Chapter MCQs )
(a) hypertonic
(b) isotonic
(c) hypotonic
(d) None of these
Option b – isotonic
The function of nucleolus is the synthesis of
(a) DNA
(b) m-RNA
(c) r-RNA
(d) t-RNA
Option c – r-RNA
Mesosome in a bacterial cell is ( Class 9 Science Chapter MCQs )
(a) plasmid
(b) a connection between two cells
(c) plasma membrane infolded for respiration
(d) None of these
Option c – plasma membrane infolded for respiration
In living, cells synthesis of ribonucleic acid (RNA) takes place in
(a) Cytoplasm
(b) Nucleus
(c) Golgi body
(d) Nephron
Option b – Nucleus
The cell organelle storing substances like starch, oil, and proteins is ( Class 9 Science Chapter MCQs )
(a) Vacuole
(b) Lysosome
(c) Plastid
(d) Golgi body
Option c – Plastid
Organisms lacking nuclear membrane and cell organelles is called as
(a) Prokaryotes
(b) Eukaryotes
(c) Protozoa
(d) Virus
Option a – Prokaryotes
Cell organelles that are involved in the waste disposal system of the cell are : ( Class 9 Science Chapter MCQs )
(a) Golgi apparatus
(b) Lysosomes
(c) Chromosomes
(d) Ribosomes
Option b – Lysosomes
Which of the following contain enzymes for cellular respiration?
(a) Dictyosomes
(b) Endoplasmic reticulum
(c) Lysosomes
(d) Mitochondria
Option d – Mitochondria
Which one among the following cell organelles is semi-permeable? ( Class 9 Science Chapter MCQs )
(a) Cell membrane
(b) Plasma membrane
(c) Cell wall
(d) Nucleus
Option d – Nucleus
Which one among the following nutrients is a structural component of the cell wall of plants?
(a) Manganese
(b) Potassium
(c) Phosphorus
(d) Calcium
Option d – Calcium
Which of the following groups is present in animal cells? ( Class 9 Science Chapter MCQs )
(a) Mitochondria, Cell membrane, Cell wall, Cytoplasm
(b) Chloroplasts, Cytoplasm, Vacuole, Nucleus
(c) Nucleus, Cell membrane, Mitochondria, Cytoplasm
(d) Vacuole, Cell membrane, Nucleus, Mitochondria
Option c – Nucleus, Cell membrane, Mitochondria, Cytoplasm
Cells that take part in secondary growth are named
(a) phloem
(b) xylem
(c) cambium
(d) medullary ray
Option c – cambium
What is hydroponics? ( Class 9 Science Chapter MCQs )
(A) A technique of growing plants without water.
(B) A technique for growing plants in soil with all essential macronutrients.
(C) A technique of growing plants in a nutrient solution.
(D) A technique of growing plants in a greenhouse.
Option c – A technique of growing plants in a nutrient solution.
The factor(s) that affect the transpiration-driven ascent of xylem sap is/are
(A) cohesion
(B) adhesion
(C) surface tension
(D) all of these
Option d – all of these
Assertion: A plant cell becomes turgid when placed in a hypotonic solution. Reason: The water concentration of the plant cell is lower than that of the surrounding medium, thus the plant cell will become turgid due to endosmosis.
(A) Both assertion and reason are true and the reason is the correct explanation of assertion.
(B) Both assertion and reason are true but the reason is not the correct explanation of assertion.
(C) The assertion is true but the reason is false.
(D) Both assertion and reason are false.
Option a – Both assertion and reason are true and the reason is the correct explanation of assertion.
Read the following statements and select the correct option. Statement I: The decomposition of organic nitrogen into ammonia is called ammonification. Statement II: Some of the ammonia formed during decomposition volatilizes and re-enters the atmosphere but most of it is converted into nitrate by soil bacteria.
(A) Statement I is correct and II is incorrect.
(B) Statement I is incorrect and II is correct.
(C) Both Statements I and II are correct.
(D) Both Statements I and II are incorrect.
Option c – Both Statements I and II are correct.
Select the INCORRECT statement from the following.
(A) Normally stomata are open in the daytime and close during the night.
(B) Change in the turgidity of the guard cells causes the opening or closing of stomata.
(C) The outer wall of each guard cell is thick and elastic.
(D) Besides transpiration, the exchange of oxygen and carbon dioxide in the leaf also occurs through these stomata.
Option c – The outer wall of each guard cell is thick and elastic.
Which of the following is/are structural element(s)?
(A) Carbon
(B) Hydrogen
(C) Oxygen
(D) All of these
Option d – All of these
Endodermis is impervious to water due to the presence of suberised matrix called
(A) pericycle
(B) plasmodesmata
(C) Casparian strip
(D) epidermis
Option c – Casparian strip
Nitrate present in the soil is reduced to nitrogen by the process of
(A) Nitrification
(B) Denitrification
(C) Ammonification
(D) Decomposition
Option b – Denitrification
Select the INCORRECT statement from the following.
(A) Plants obtain sulphur in the form of sulphate.
(B) Sulphur is a constituent of the ring structure of chlorophyll.
(C) Sulphur is present in cysteine and methionine.
(D) Sulphur is a constituent of several coenzymes.
Option b – Sulphur is a constituent of the ring structure of chlorophyll.
Assertion: All solutions have lower water potential than pure water. Reason: When solutes are added to water, the value of water potential decreases.
(A) Both assertion and reason are true and the reason is the correct explanation of the assertion.
(B) Both assertion and reason are true and the reason is not the correct explanation of the assertion.
(C) The assertion is true but the reason is false.
(D) Both assertion and reason are false.
Option a – Both assertion and reason are true and the reason is the correct explanation of the assertion.
Which of the following is NOT a leguminous plant?
(A) Sweet
(B) Lentil pea
(C) Sweet clover
(D) Alnus
Option d – Alnus
Root pressure contributes to forming a continuous chain of
(A) water molecules in the xylem.
(B) develops due to active absorption.
(C) causes water to rise in tall plants by pulling it.
(D) both (A) and (B)
Option d – both (A) and (B)
The deficiency of this micronutrient causes delayed flowering :
(A) Nitrogen
(B) Sulphur
(C) Phosphorus
(D) Molybdenum
Option d – Molybdenum
The ‘Girdling experiment’ proves that
(A) water is mainly pulled through the plant and the driving force for this process is transpiration from the leaves.
(B) phloem is the tissue responsible for the translocation of food.
(C) translocation through the phloem is bidirectional.
(D) translocation is the transport of food away from the roots to green parts of the plants.
Option b – phloem is the tissue responsible for the translocation of food.
A large number of stomata is present on
(A) the upper surface of the dorsiventral leaves
(B) isobilateral leaves
(C) leaves of most the monocot plants
(D) the lower surface of a dorsiventral leaf
Option d – the lower surface of a dorsiventral leaf
Identify the INCORRECT statement regarding biological nitrogen fixation.
(A) It occurs either symbiotically or non-symbiotically.
(B) It is the process of reducing nitrogen to ammonia by living organisms.
(C) It is the process in which ammonia is converted to nitrogen by the enzyme leghaemoglobin.
(D) Frankia exhibits a symbiotic relationship with Alnus by forming root nodules for nitrogen fixation.
Option c – It is the process in which ammonia is converted to nitrogen by the enzyme leghaemoglobin.
When raisins are placed in water, they swell due to
(A) facilitated diffusion
(B) plasmolysis
(C) imbibition
(D) transpiration
Option c – imbibition
The enzyme nitrogenase is sensitive to
(A) nitrogen
(B) oxygen
(C) hydrogen
(D) carbon
Option b – oxygen
Read the given statements. Statement (i): Aspargine and glutamine are the two important amides found in plants that form the structural part of proteins. Statement (ii): Amino acids contain more nitrogen than amides, thus they are transported to other parts of the plant via a xylem vessel. The correct statement/s is/are
(A) Statement (i)
(B) Statement (ii)
(C) Both statements (i) and (ii)
(D) Neither statement (i) nor (ii)
Option a – Statement (i)
Which of the following is NOT true with respect to the active absorption of mineral ions?
(A) It is a physiological process that needs metabolic energy.
(B) It is a carrier-mediated process.
(C) It takes place from higher concentrations (roots) of minerals to lower concentrations (soil).
(D) It is responsible for the water gradient in roots which leads to water absorption by osmosis.
Option c – It takes place from higher concentrations (roots) of minerals to lower concentrations (soil).
At 25 °C, acetone has a vapor pressure of 160 mm Hg and an organic liquid (B) has a vapor pressure of 18 mm Hg. Assuming that the mixture of acetone and (B) obeys Raoult’s law, what would be the vapor pressure of the solution having acetone and water with 50 mol % of each at 25 °C?
(A) 71 mm Hg
(B) 89 mm Hg
(C) 178 mm Hg
(D) 196 mm Hg
Option b – 89 mm Hg
Which of the following is the best description of a semipermeable membrane in the context of osmosis?
(A) A membrane, allows neither solute nor solvent particles to pass through it.
(B) A membrane, allows both solute and solvent particles to pass through it.
(C) A membrane allows solvent particles, but not solute particles, to pass through it.
(D) A membrane allows solute particles, but not solvent particles, to pass through it.
Option c – A membrane allows solvent particles, but not solute particles, to pass through it.
The vapor pressure of pure water at 23 °C is 19.8 mm Hg. If 0.1-mole glucose is dissolved in 178.2 g of water, what is the vapor pressure (in mm Hg) of the resultant solution at 23 °C?
(A) 18.8
(B) 19.6
(C) 20.0
(D) 39.6
Option b – 19.6
In which case, van’t Hoff factor maximum?
(A) LiCl, 50% ionized
(B) Na₂SO4, 40% ionized
(C) AICl3, 30% ionized
(D) Al2(SO4)3, 20% ionized
Option c – AICl3, 30% ionized
Consider the following solutions I: 1 M aq, glucose II 1 M aq. sodium chloride III: 1 M benzoic acid in benzene IV I M aq. ammonium phosphate Select the INCORRECT statement, considering that the association and dissociation of solutes are 100% in their respective solutions.
(A) I and III are isotonic solutions.
(B) III is hypotonic with respect to II.
(C) I, II, and IV are hypertonic with respect to III.
(D) IV is hypertonic with respect to I.
Option a – I and III are isotonic solutions.
An aqueous solution of an unknown solute (non-electrolyte) is taken in a graduated conical flask. The conical flask is stoppered using a cork. The content of the flask is then slowly heated and the change in volume is noted. It was observed that when the volume of the solution increases with the increase in temperature, the ………… decreases.
(A) molarity of the solution
(B) the molality of the solution
(C) mole fraction of the solute in the solution
(D) percentage by mass of solute in the solution
Option a – molarity of the solution
A non-ideal solution was prepared by mixing 20 mL chloroform and 50 mL acetone. The volume of the resulting mixture will be
(A) > 70 mL
(B) <70 mL
(C) = 70 mL
(D) ≥ 70 mL
Option b –
An aqueous solution of sucrose is prepared. When the concentration of the solution is increased, ………..
(A) the boiling point increases while vapor pressure decreases
(B) boiling point decreases while vapor pressure increases
(C) freezing point decreases while vapor pressure increases
(D) freezing point increases while vapor pressure decreases
Option a – the boiling point increases while vapor pressure decreases
Consider two binary solutions (P) and (Q) : (P) In bromoethane and chloroethane mixture, intermolecular interactions of A-A and B-B type are nearly the same as A-B type interactions. (Q) In ethanol and acetone mixture, A-A or B-B type intermolecular interactions are stronger than A-B type interactions. Which of the following is CORRECT?
(A) Solution (P) will follow Raoult’s law.
(B) Solution (Q) will follow Raoult’s law.
(C) Both the solutions will follow Raoult’s
(D) Neither of the solutions will follow Raoult’s law.
Option a – Solution (P) will follow Raoult’s law.
Three closed beakers are numbered 1, 2, and 3. Beaker 1 contains 100 cm³ of pure solvent water. Beaker 2 contains 100 cm³ of an aqueous solution of urea in which the mole fraction of water is 0.85 and beaker 3 contains 100 cm³ of an aqueous solution of urea in which the mole fraction of water is 0.95. All three beakers are maintained at a constant temperature. Identify the CORRECT option.
(A) The Vapour pressure of the solvent in beaker 1 is less than the vapor pressure of the solution in beaker 2.
(B) The Vapour pressure of the solvent in beaker 1 is less than the vapor pressure of the solution in beaker 3.
(C) Relative lowering of vapor pressure is higher in solution in beaker 2 as compared to beaker 3.
(D) Relative lowering of vapor pressure is higher in solution in beaker 3 compared to beaker 2.
Option c – Relative lowering of vapor pressure is higher in solution in beaker 2 as compared to beaker 3.
The vapor pressure of an aqueous dilute solution of glucose is 740 mm Hg at 373 K. The mole fraction of glucose and water in the solution is……… respectively.
(A) 0.013; 0.974
(B) 0.026; 0.974
(C) 0.760; 0.013
(D) 0.987; 0.026
Option b – 0.026; 0.974
The boiling point and freezing point of 1 m aqueous solution of NaCl will be ……… respectively.
(A) 298 K, 300 K
(B) 373 K, 273 K
(C) below 273 K, above 373 K
(D) above 373 K, below 273 K
Option d – above 373 K, below 273 K
Lowering of vapor pressure due to a nonvolatile, non-electrolyte in 1 molal aqueous solution at 100 °C is ………
(A) 13.38 mm Hg
(B) 14.12 mm Hg
(C) 31.21 mm Hg
(D) 35.21 mm Hg
Option a – 13.38 mm Hg
2.5 L of NaCl solution contains 5 moles of the solute. What is the molarity?
(A) 0.5 M
(B) 1.0 M
(C) 2.0 M
(D) 2.5 M
Option c – 2.0 M
Which of the following is INCORRECT?
(A) When a plant cell is placed in a hypertonic solution, the fluid (water) from the cell comes out and the cell shrinks.
(B) A raw mango placed in a concentrated salt solution loses water and shrivels into a pickle.
(C) When blood cells are placed in water containing less than 0.9% (mass/volume) sodium chloride, blood cells shrink due to the loss of water.
(D) When wilted flowers are placed in freshwater, they revive once again.
Option c – When blood cells are placed in water containing less than 0.9% (mass/volume) sodium chloride, blood cells shrink due to the loss of water.
18 g glucose is dissolved in a 1-liter aqueous solution at 27°C. The osmotic pressure of the solution will be …….. ( Class 10 Science Chapter 1 MCQ with Answers )
(A) 2.463 atm
(B) 4.926 atm
(C) 6.921 atm
(D) 9.421 atm
Option a – 2.463 atm
At a particular temperature, the vapor pressure of pure water is 39 kPa. Which one of the following is the most likely vapor pressure for a 0.5 M aqueous solution of sucrose at the same temperature?
(A) 0 kPa
(B) 41 kPa
(C) 39 kPa
(D) 37 kPa
Option d – 37 kPa
The osmotic pressure of a solution at 0°C is 4 atm. What will be its osmotic pressure at 546 K under similar conditions?
(A) 2 atm
(B) 4 atm
(C) 8 atm
(D) 10 atm
Option c – 8 atm
An ideal solution was prepared by mixing 3 moles of methyl alcohol with 2 moles of ethyl alcohol at a particular temperature. The vapor pressure of pure methyl alcohol and pure ethyl alcohol at this temperature is 88.7 mm Hg and 44.5 mm Hg respectively. The partial vapor pressure of methyl alcohol is ………..
(A) 53.22 mm Hg
(B) 26.70 mm Hg
(C) 266.10 mm Hg
(D) 147.83 mm Hg
Option a – 53.22 mm Hg
The osmotic pressure of 0.1 M aqueous solution of MgCl₂ at 300 K is 4.92 atm. What will be the percentage ionization of the salt?
(A) 49.5%
(B) 59.2%
(C) 69.8%
(D) 72.3%
Option a – 49.5%
We covered all the class 9 science chapter 5 mcq online test above in this post for free so that you can practice well for the exam.
Check out the latest MCQ content by visiting our mcqtube website homepage.
Also, check out:
- MCQ on is Matter Around us Pure
- Class 9 Chemistry Chapter 2 MCQ
- Class 9 Matter in Our Surroundings MCQ
