What are porins? What role do they play | Class 11 Biology Chapter Transport in Plants, Transport in Plants NCERT Solutions

Previous / historical NCERT chapter

This chapter belongs to a previous NCERT/CBSE curriculum and is not part of the current 2026-27 chapter list. Removed in 2022-23.

Welcome to the NCERT Solutions for Class 11 Biology - Chapter Transport in Plants. This page offers a step-by-step solution to the specific question from Exercise 1, Question 2: What are porins? What role do they play in diffusion?. With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.

Question 2: What are porins? What role do they play in diffusion?
Answer:

Porins are types of proteins which form pores of large sizes in the outer membranes of plastids such as chloroplast, mitochondria and the membranes in bacteria. They help in facilitating the passive transport of small-sized protein molecules.

Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

  • Read the question carefully and focus on the core concept being asked.
  • Reference examples and data from the chapter when answering questions about Transport in Plants.
  • Review previous year question papers to get an idea of how such questions may be framed in exams.
  • Practice answering questions within the time limit to improve your speed and accuracy.
  • Discuss your answers with your teachers or peers to get feedback and improve your understanding.

Latest Blog Posts

Stay updated with our latest educational content and study tips

How to Build a Career in Data Analytics Without a Computer Science Degree

All businesses are gathering information on customers, products, employees, and expenditures, and someone must make decisions based on the data. That individual is the data analyst. Unlike many career changers imagine, the job is open to a broader cross-section of the population than a typical career change. A lot of working analysts trained in commerce, … Read more

Read More

Life Insurance vs Health Insurance: Why Families May Need Both

Are often purchased, talked and planned as being a replacement for another. They aren’t. One safeguards your family’s income in your absence and the other safeguards your family’s savings in the event that someone becomes ill. An examination of what they do, what they do not do, and why they are missing it when one … Read more

Read More

Home Loan vs Savings: Compare the Costs Before Buying a Home

Pay upfront, or pay off less and over time? The truth depends on four factors most consumers will never compare at the same time: the interest rate on the house loan, the interest rate on the savings account, the rate of home price appreciation, and the cost of renting the home until you actually buy … Read more

Read More

Business After 30 or a Stable Job: Which Path Should You Choose?

Thirty is when the question starts to get raised and you’re able to do something because you know you have the experience—you know you have the responsibility. Here are some ways to consider the choice based on a realistic assessment without idealizing either aspect. Restlessness is one of those things that appears in your early … Read more

Read More
View All Blog Posts

Related Resources

Exam Information

Get detailed information about CBSE exams, patterns, and preparation tips

View Exam

Full Form

Learn about Full form significance

Explore

Calculator

Use our online calculator for quick calculations and problem solving

Use Calculator

Glossary

Browse our comprehensive glossary of important terms and definitions

View Glossary

Related Student Tools

Class-wise Resources

Explore more educational resources to enhance your learning experience

Class 12 Resources

Complete study resources for this class

Class 11 Resources

Complete study resources for this class

Class 10 Resources

Complete study resources for this class

Class 9 Resources

Complete study resources for this class

Class 8 Resources

Complete study resources for this class

Class 7 Resources

Complete study resources for this class

Class 6 Resources

Complete study resources for this class

Quick Access

NCERT Solutions Sample Papers Formulas Math Tables Calculators Study Blog

Comments

  • Sugumar
  • Dec 19, 2019

Awesome I really liked it thanks for giving this answer in simple

  • Siya
  • Oct 05, 2019

Thanks it's really help me

  • Rajvir
  • Feb 27, 2019

Thnx..well answered!!

  • Sakshi
  • Mar 21, 2018

Its the only site which helps me alot in finding my answers

  • Shreya Mukherjee
  • Feb 07, 2018

Thanks. It really helped a lot..

  • Armaan
  • Jan 21, 2018

Porins are proteins lined hydrophilic channels present in the outer membrane of plastids, mitochondria & some bacteria. They allow passage of large bio molecules, even small sized proteins as per diffusion gradient. Aqua potions are water channels for diffusion of water molecules across the plasma membrane as per osmotic gradients.

  • dar nayeem
  • Nov 27, 2017

it really helps me so i request u that plzz make an app in playstore regaeding this coz it helps many students to make his study easy...😍😍😍😍

  • Aakash
  • Mar 06, 2017

Plz make an app on playstore

  • Kiran
  • Feb 10, 2017

Awesome

  • Shashank Sahu
  • Apr 02, 2015

really helped me SARAL STUDY thank you really

Add Comment

Welcome to the NCERT Solutions for Class 11 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 2: What are porins? What role do they play in diffusion?....

Students Also Read

Ask a Question
Keep learning

Discover More on SaralStudy

Explore all articles