Class 7 Exam > Class 7 Videos > Science Class 7 (Old NCERT) > How do Fish Breathe?
How do Fish Breathe? Video Lecture | Science Class 7 (Old NCERT)
FAQs on How do Fish Breathe? Video Lecture - Science Class 7 (Old NCERT)
| 1. How do fish breathe? |  |
Ans. Fish breathe through their gills. They have special organs called gills that extract oxygen from water. As water passes over the gills, oxygen is absorbed into the fish's bloodstream, and carbon dioxide is released back into the water.
| 2. Do all fish breathe in the same way? | |
Ans. No, not all fish breathe in the same way. While most fish have gills and extract oxygen from water, there are some exceptions. For example, lungfish have both gills and lungs, allowing them to breathe air when the water is low in oxygen.
| 3. Can fish breathe outside of water? | |
Ans. Most fish cannot breathe outside of water. Their gills are adapted to extract oxygen from water, and they do not have the ability to extract oxygen from the air like mammals do. However, some fish, such as mudskippers, have developed the ability to breathe air and survive short periods out of water.
| 4. How do fish get oxygen from water? | |
Ans. Fish get oxygen from water through their gills. Gills are made up of thin, feathery structures that have a rich supply of blood vessels. As water flows over the gills, oxygen molecules dissolve in the water and pass through the thin walls of the gill filaments into the fish's bloodstream.
| 5. Can fish breathe in polluted water? | |
Ans. Fish have a limited tolerance for polluted water as it can negatively affect their ability to extract oxygen from water. Pollutants such as chemicals, toxins, and heavy metals can damage the gills, making it difficult for fish to breathe properly. In severe cases, polluted water can lead to fish suffocating and dying.
About this Video
3.6K Views
4.96/5
Rating
Sep 24, 2025
Last updated
Video Description: How do Fish Breathe? for Class 7 2025 is part of Science Class 7 (Old NCERT) preparation.
The notes and questions for How do Fish Breathe? have been prepared according to the Class 7 exam syllabus.
Information about How do Fish Breathe? covers all important topics for Class 7 2025 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for How do Fish Breathe?.
Introduction of How do Fish Breathe? in English is available as part of our Science Class 7 (Old NCERT) for Class 7 & How do Fish Breathe? in
Hindi for Science Class 7 (Old NCERT) course. Download more important topics related with notes, lectures and mock test series for
Class 7 Exam by signing up for free.
Description
Video Lecture & Questions for How do Fish Breathe? Video Lecture | Science Class 7 (Old NCERT) - Class 7 full syllabus preparation | Free video for Class 7 exam to prepare for Science Class 7 (Old NCERT).
Information about How do Fish Breathe?
Here you can find the meaning of How do Fish Breathe? defined & explained in the simplest way possible.
Besides explaining types of How do Fish Breathe? theory, EduRev gives you an ample number of questions to practice How do Fish Breathe? tests,
examples and also practice Class 7 tests.
Related Searches
video lectures
,practice quizzes
,Semester Notes
,ppt
,Important questions
,How do Fish Breathe? Video Lecture | Science Class 7 (Old NCERT)
,Exam
,Viva Questions
,past year papers
,MCQs
,Objective type Questions
,Previous Year Questions with Solutions
,Free
,How do Fish Breathe? Video Lecture | Science Class 7 (Old NCERT)
,How do Fish Breathe? Video Lecture | Science Class 7 (Old NCERT)
,shortcuts and tricks
,Summary
,study material
,Extra Questions
,mock tests for examination
,Sample Paper
,
Study How do Fish Breathe? on the App
Students of Class 7 can study How do Fish Breathe? alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the How do Fish Breathe?,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of How do Fish Breathe? is prepared as per the latest Class 7 syllabus.
|
© EduRev
|
Education Revolution
|
|
Signup on EduRev and stay on top of your study goals
10M+ students crushing their study goals daily