How do plants and animals breathe

43,984 views

Published on

Published in: Technology, Business
1 Comment
3 Likes
Statistics
Notes
  • Please remove this slideshow from your account. It is meant for sharing among the teachers only. Not for public.
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
No Downloads
Views
Total views
43,984
On SlideShare
0
From Embeds
0
Number of Embeds
1,025
Actions
Shares
0
Downloads
563
Comments
1
Likes
3
Embeds 0
No embeds

No notes for slide

How do plants and animals breathe

  1. 1. Submitted by Ms Gooi Shu Wan Pei Chun Public School
  2. 2. <ul><li>Topic: Living Things Need Air </li></ul><ul><li>Sub-topics: How do plants and animals breathe? </li></ul><ul><li>Level: Primary 4 </li></ul><ul><li>Number of periods: 2 (1 hour) </li></ul><ul><li>Specific Instructional Objectives </li></ul><ul><li>After completing the lesson, pupils will be able to: </li></ul><ul><li>- compare how plants, fish and mammals take in oxygen and give out carbon dioxide. </li></ul>
  3. 3. <ul><li>Key concepts </li></ul><ul><li>- Plants exchange gases with its environment through stomata. </li></ul><ul><li>- Fish breathe using gills. </li></ul><ul><li>- Mammals breathe using their lungs. </li></ul><ul><li>Process Skills </li></ul><ul><li>- Observing </li></ul><ul><li>- Comparing </li></ul>
  4. 4. Why do living things need air?
  5. 5. We need OXYGEN to carry out RESPIRATION.
  6. 6. What is RESPIRATION ?
  7. 7. <ul><ul><li>Respiration is the process which releases energy from the food consumed. </li></ul></ul><ul><ul><li>It uses oxygen and gives off carbon dioxide . </li></ul></ul>
  8. 8. <ul><li>Nitrogen </li></ul><ul><li>Oxygen </li></ul><ul><li>Carbon dioxide </li></ul><ul><li>Water vapour </li></ul>more less <ul><li>Nitrogen </li></ul><ul><li>Oxygen </li></ul><ul><li>Carbon dioxide </li></ul><ul><li>Water vapour </li></ul>more less more less
  9. 9. <ul><ul><li>Plants exchange gases with the surrounding air through the stomata . </li></ul></ul><ul><ul><li>Closed stoma </li></ul></ul><ul><ul><li>Open stoma </li></ul></ul>Pictures courtesy of MicroAngela
  10. 10. <ul><ul><li>Oxygen </li></ul></ul><ul><ul><li>Oxygen </li></ul></ul><ul><ul><li>Carbon dioxide </li></ul></ul><ul><ul><li>Carbon dioxide </li></ul></ul>
  11. 11. <ul><ul><li>Mammals breathe by using their lungs . </li></ul></ul>
  12. 12. Oxygen absorbed by blood vessels in the lungs. Carbon dioxide leaves the blood vessels and goes into the air we breathe out. Picture courtesy of Encyclopaedia Britannica <ul><ul><li>What about the mammals that live in water? </li></ul></ul>Air moves through the windpipe and other tubes. Air enters the body through the nose and mouth. Air leaves the body through the nose and mouth.
  13. 14. <ul><ul><li>Dolphin </li></ul></ul><ul><ul><li>Blowhole </li></ul></ul>
  14. 15. <ul><ul><li>Whale </li></ul></ul>Copyright © 1999-2006 Tigerhomes.org <ul><ul><li>Blowhole </li></ul></ul>
  15. 16. <ul><ul><li>Dugong / Sea Cow </li></ul></ul><ul><ul><li>Porpoise </li></ul></ul>Photo courtesy of National Geographic © Great Barrier Reef Marine Park Authority 2005 Photo courtesy of Encyclopaedia Britannica
  16. 17. <ul><ul><li>Seal </li></ul></ul>Photo courtesy of PDPhoto.org <ul><ul><li>Breathing hole </li></ul></ul>
  17. 18. <ul><ul><li>Fish breathe by gills . </li></ul></ul><ul><ul><li>Gills </li></ul></ul><ul><ul><li>Gill has a large surface area and a lot of blood vessels . </li></ul></ul>
  18. 19. <ul><ul><li>Carbon dioxide is removed from blood vessels through the gills. </li></ul></ul><ul><ul><li>Oxygen in the water absorbed into blood vessels through the gills </li></ul></ul>
  19. 20. <ul><ul><li>Match the following living things to the parts they use for breathing. </li></ul></ul>stomata gills lungs
  20. 21. <ul><ul><li>That’s correct. </li></ul></ul><ul><ul><li>Shark is a fish and it breathes through gills . </li></ul></ul>Next question <ul><ul><li>Gills </li></ul></ul>
  21. 22. stomata gills lungs
  22. 23. <ul><ul><li>That’s correct. </li></ul></ul><ul><ul><li>Elephant is a mammal and it breathes using its lungs . </li></ul></ul>Next question
  23. 24. stomata gills lungs
  24. 25. <ul><ul><li>That’s correct. </li></ul></ul><ul><ul><li>Sunflower is a plant and it breathes through stomata . </li></ul></ul>Next question
  25. 26. stomata gills lungs Picture courtesy of National Geographic
  26. 27. <ul><ul><li>That’s correct. </li></ul></ul><ul><ul><li>Walrus is a mammal and it breathes using its lungs . </li></ul></ul>Summary Picture courtesy of National Geographic
  27. 28. <ul><ul><li>That’s incorrect. Please try again. </li></ul></ul>
  28. 29. <ul><ul><li>That’s incorrect. Please try again. </li></ul></ul>
  29. 30. <ul><ul><li>That’s incorrect. Please try again. </li></ul></ul>
  30. 31. <ul><ul><li>That’s incorrect. Please try again. </li></ul></ul>
  31. 32. ENERGY CARBON DIOXIDE RESPIRATION. OXYGEN <ul><li>During respiration, </li></ul><ul><li>is released from the food consumed. </li></ul>? <ul><li>We take in and </li></ul><ul><li>give out . </li></ul>? ? <ul><li>Living things need oxygen to carry out </li></ul>?
  32. 33. STOMATA. GILLS. LUNGS. <ul><li>Plants exchange gases with the environment through </li></ul>? <ul><li>Fish breathe by using </li></ul>? <ul><li>Mammals breathe by using their </li></ul>?

×