Diffusion, Osmosis and TransportPractice Questions & MCQs
Practice Diffusion, Osmosis and Transport questions from The Fundamental Unit of Life (Class 9 Science) - important MCQs with answers and step-by-step solutions. Solve the sample questions below, then practice the full set free on the RankByte app.
Diffusion, Osmosis and TransportQuiz - Solve & Score
Q1. Which term means: 'net movement of particles from high to low concentration'?
- A.Diffusion
- B.Active transport
- C.Plasmolysis
- D.Turgidity
Answer: A. Diffusion
Asked for the unknown; data is laid out in the stem. By mass percent = (mass of solute / mass of solution) * 100. mass percent = (mass of solute / mass of solution) * 100. substituting the given masses. Therefore option A) Diffusion. Others fail: option B) 'Active transport' is incorrect: Active transport: energy-requiring movement against the gradient; option C) 'Plasmolysis' doesn't hold - Plasmolysis: shrinking of protoplast away from the wall in a hypertonic solution.
Q2. Which term means: 'movement of water across a semipermeable membrane'?
- A.Osmosis
- B.Plasmolysis
- C.Turgidity
- D.Endocytosis
Answer: A. Osmosis
To see why, recall that Identify the defining feature of the structure/tissue named in the question; match that feature against the four options => only one option is consistent with the textbook description; therefore the correct identification = Osmosis. That fits the listed correct option directly - Correct. Looking at the others: option B) 'Plasmolysis' is incorrect: Plasmolysis: shrinking of protoplast away from the wall in a hypertonic solution; option C) 'Turgidity' misses the point - Turgidity: firm, swollen state of a cell full of water. Hence the answer is A) Osmosis.
Q3. Which term means: 'energy-requiring movement against the gradient'?
- A.Active transport
- B.Turgidity
- C.Endocytosis
- D.Endosmosis
Answer: A. Active transport
Concept involved: The work-energy theorem gives W = F * s * cos(theta) for a constant force; when the force and displacement align, W = F * s => substituting the data yields the quoted result; hence the answer is Active transport. Connecting concept to answer: Correct. Wrong options at a glance: option B) 'Turgidity' fails since Turgidity: firm, swollen state of a cell full of water; option C) 'Endocytosis' fails since Endocytosis: taking material into the cell by engulfing; option D) 'Endosmosis' fails since Endosmosis: net entry of water into a cell. Therefore the correct option is A) Active transport.
Master Diffusion, Osmosis and Transport on RankByte
Step-by-step solutions, mock tests, live ranks and streaks - free to start.
Get early accessDiffusion, Osmosis and Transport - Frequently asked questions
Where can I practise Diffusion, Osmosis and Transport questions for Class 9 Science?
RankByte has Diffusion, Osmosis and Transport practice questions and MCQs from The Fundamental Unit of Life (Class 9 Science), each with the correct answer and a step-by-step solution - free to start.
Are these Diffusion, Osmosis and Transport questions important for the exam?
Yes. These Diffusion, Osmosis and Transport important questions follow the Science exam pattern (CBSE Boards, plus JEE and NEET foundation), so they help with both school and competitive prep.
Do the Diffusion, Osmosis and Transport questions come with answers and solutions?
Every Diffusion, Osmosis and Transport question on RankByte comes with the correct answer and a full step-by-step solution, so you learn the concept instead of just guessing.