Respiration-in-Organisms.pdf 7TH CLASS PDF

Here's a description of Respiratory in Organisms PPT for Class 7:


Slide 1: Introduction

- Title: Respiration in Organisms
- Subtitle: Energy for Life
- Image: Human lungs or cellular respiration diagram


Slide 2: What is Respiration?

- Definition: Process of releasing energy from food
- Types: Aerobic (with oxygen) and Anaerobic (without oxygen)
- Importance: Essential for life


Slide 3: Types of Respiration

- Aerobic Respiration (cellular respiration)
- Anaerobic Respiration (fermentation)
- Photosynthesis (in plants)


Slide 4: Cellular Respiration

- Equation: C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP (energy)
- Stages: Glycolysis, Citric Acid Cycle, Electron Transport Chain
- Location: Mitochondria


Slide 5: Breathing System

- Human respiratory system:
- Nose/Mouth
- Trachea
- Bronchi
- Lungs
- Diaphragm
- Plant respiratory system:
- Stomata
- Lenticels


Slide 6: Breathing Process

- Inhalation (breathing in)
- Exhalation (breathing out)
- Exchange of gases (O2, CO2)


Slide 7: Respiratory Organs

- Human: lungs, trachea, bronchi
- Plant: stomata, lenticels
- Animal: gills, book lungs, tracheae


Slide 8: Importance of Respiration

- Energy production
- Maintains life
- Supports growth and development


Slide 9: Respiratory Disorders

- Asthma
- Bronchitis
- Emphysema
- Lung cancer


Slide 10: Conclusion

- Respiration essential for life
- Different types of respiration
- Importance of breathing system


Additional Points to Cover:

- Oxidation and reduction
- ATP production
- Energy yield


Images and Diagrams:

- Cellular respiration diagram
- Human lungs
- Plant stomata
- Breathing system diagram


Key Terms:

- Respiration
- Aerobic
- Anaerobic
- Cellular respiration
- Breathing


Assessment Questions:

1. What is respiration?
2. What are the types of respiration?
3. What is cellular respiration?
4. What is the importance of breathing system?


This PPT provides a comprehensive overview of respiration in organisms for Class 7, covering types of respiration, cellular respiration, breathing system, and importance of respiration.

1. Respiration in
Organisms
Respiration is essential for all living organisms. It releases energy from
food through the breakdown of glucose. This process occurs in the cells
of organisms and is called cellular respiration.
by sandeep swamy

2. Why We Respire
1
Energy Release
Respiration breaks down food to release energy for cellular
functions.
2
Constant Need
Energy is required even when resting or sleeping.
3
Food as Fuel
Stored energy in food is released during respiration.

3. Types of Respiration
Aerobic Respiration
Breakdown of glucose using oxygen. Produces more
energy.
Anaerobic Respiration
Breakdown of glucose without oxygen. Produces less
energy.

4. Breathing Process
1
Inhalation
Air rich in oxygen enters the body through nostrils.
2
Gas Exchange
Oxygen from air enters bloodstream in lungs.
3
Exhalation
Air rich in carbon dioxide is expelled from the body.

5. Breathing Rate
Normal Rate
15-18 breaths per minute for an average adult at rest.
Increased Rate
Up to 25 breaths per minute during heavy exercise.
Deeper Breaths
More oxygen inhaled during physical activity.

6. Breathing Mechanism
1
Nasal Cavity
Air enters through nostrils into nasal cavity.
2
Windpipe
Air travels through windpipe to lungs.
3
Lungs
Gas exchange occurs in the lungs.

7. Role of Diaphragm
1
Inhalation
Diaphragm moves down, increasing chest cavity space.
2
Lungs Expand
Air rushes into expanded lungs.
3
Exhalation
Diaphragm moves up, decreasing chest cavity space.

8. Breathing in Other Animals
Mammals
Breathe through lungs like humans.
Fish
Use gills to extract oxygen from
water.
Insects
Breathe through a network of air
tubes called tracheae.

9. Insect Respiration
1
Spiracles
Small openings on the sides of an insect's body.
2
Tracheae
Network of air tubes that distribute oxygen.
3
Gas Exchange
Oxygen diffuses directly into body tissues.

10. Earthworm Respiration
Skin Breathing
Earthworms breathe through their moist skin.
Gas Diffusion
Oxygen easily passes through the slimy skin surface.
Efficient System
Allows for gas exchange without specialized organs.

11. Aquatic Respiration
1
Water Intake
Fish take in water through their mouths.
2
Gill Filtration
Water passes over the gills, rich in blood vessels.
3
Oxygen Absorption
Dissolved oxygen is absorbed into the bloodstream.

12. Plant Respiration
Leaf Respiration
Plants breathe through tiny pores
called stomata in their leaves.
Root Respiration
Roots absorb oxygen from air
spaces in the soil.
Cellular Process
Plant cells break down glucose
similar to animal cells.

13. Anaerobic Respiration in Humans
Oxygen Shortage
Occurs during intense exercise
when oxygen supply is
insufficient.
Lactic Acid
Produced as a byproduct,
causing muscle cramps.
Temporary Solution
Allows for continued energy
production in oxygen-deprived
conditions.

14. Yeast and Anaerobic Respiration
1
Glucose Breakdown
Yeast breaks down glucose
without oxygen.
2
Alcohol Production
Ethanol is produced as a
byproduct.
3
Carbon Dioxide
CO2 is released during the
process.

15. Composition of Exhaled Air
Gas Inhaled Air Exhaled Air
Oxygen 21% 16%
Carbon Dioxide 0.04% 4%
Water Vapor Variable Saturated