Respiration in Plants and Animals

Views:
 
Category: Entertainment
     
 

Presentation Description

No description available.

Comments

Presentation Transcript

RESPIRATION IN ORGANISMS:

RESPIRATION IN ORGANISMS SCIENCE For class 7

WHAT IS RESPIRATION:

WHAT IS RESPIRATION The respiration is the process of taking air inside your lungs and throwing it outside. When you takes it inside, the oxygen is used for breaking down of glucose in your cells, then it produces CO2. As you can see in the given figures. This also helps in blood circulation

WHY DO WE RESPIRE:

WHY DO WE RESPIRE All organisms are made of small microscopic units called cells. A cell is the smallest structural and functional unit of an organism. Each cell of an organism performs certain functions such as nutrition, transport and excretion . To perform these functions, the cell needs energy. Even when we are eating, sleeping or reading we require energy. The food has stored energy, which is released during respiration. Therefore, all living organisms respire to get energy from food.

The Real Definition of Respiration:

The Real Definition of Respiration The process of breakdown of food in the cell with the release of energy is called cellular respiration. Cellular respiration takes place in the cells of all organisms. In the cell, the food (glucose) is broken down into carbon dioxide and water using oxygen. When breakdown of glucose occurs with the use of oxygen it is called aerobic respiration. Food can also be broken down, without using oxygen. This is called anaerobic respiration. Breakdown of food releases energy. With the use of oxygen Glucose → carbon dioxide + water + energy You should know that there are some organisms such as yeast that can survive in the absence of air. They are called anaerobes. They get energy through anaerobic respiration. In the absence of oxygen, glucose breaks down into alcohol and carbon dioxide, as given below: → Without the use of oxygen Glucose alcohol + carbon dioxide + energy

ANAROBIC RESPIRATION:

ANAROBIC RESPIRATION Glucose in the absence of oxygen__ >lactic acid + energy (in muscle)

ALCOHOL:

ALCOHOL Yeasts are single-celled organisms. They respire anaerobically and during this process yield alcohol. They are, therefore, used to make wine and beer.

BREATHING:

BREATHING Breathing means taking in air rich in oxygen and giving out air rich in carbon dioxide with the help of respiratory organs. The taking in of air rich in oxygen into the body is called inhalation and giving out of air rich in carbon dioxide is known as exhalation. It is a continuous process which goes on all the time and throughout the life of an organism. The number of times a person breathes in a minute is termed as the breathing rate. During breathing inhalation and exhalation take place alternately. A breath means one inhalation plus one exhalation

AVERAGE BREATHING RATE:

AVERAGE BREATHING RATE On an average, an adult human being at rest breathes in and out 15 ñ 18 times in a minute. During heavy exercise, the breathing rate can increase upto 25 times per minute. While we exercise, not only do we breathe fast, we also take deep breaths and thus inhale more oxygen.

VARIATION OF BREATIING IN DIFFERENT ACTIVITIES:

VARIATION OF BREATIING IN DIFFERENT ACTIVITIES

DIAPHRAGM:

DIAPHRAGM The lung cavity is surrounded by ribs on the sides. A large, muscular sheet called diaphragm forms the floor of the chest cavity diaphragm diaphragm diaphragm

Inhaled And Exhaled Air:

Inhaled And Exhaled Air The percentage of oxygen and carbon dioxide in inhaled and exhaled air. Inhaled air Exhaled air 21% oxygen 16.4% oxygen Lungs 0.04% carbon 4.4% carbon dioxide dioxide

BREATHING IN OTHER ANIMALS:

BREATHING IN OTHER ANIMALS Cockroach: A cockroach has small openings on the sides of its body. Other insects also have similar openings. These openings are called spiracles (Fig. 10.9). Insects have a network of air tubes called tracheae for gas exchange. Oxygen rich air rushes through spiracles into the tracheal tubes, diffuses into the body tissue, and reaches every cell of the body. Similarly, carbon dioxide from the cells goes into the tracheal tubes and moves out through spiracles. These air tubes or tracheae are found only in insects and not in any other group of animals. Tracheae

BREATHING UNDER WATER:

BREATHING UNDER WATER There are many organisms which live in water. Gills in fish help them to use oxygen dissolved in water. Gills are projections of the skin. You may wonder how gills help in breathing. Gills are well supplied with blood vessels for exchange of gases. Gills

BREATHING OF PLANTS:

BREATHING OF PLANTS Like all other living cells of the plants, the root cells also need oxygen to generate energy. Roots take up air from the air spaces present between the soil particles Soil particle Root hair Air space

QUIZ Rule: click the black screen aside to your answer :

QUIZ Rule: click the black screen aside to your answer The openings on an Insect used to take the air inside is called: Tracheae Spiracles

PowerPoint Presentation:

The average breathing rate of an adult while rest is: 15 to 18 20 to 25

PowerPoint Presentation:

In _______ respiration, lactic acid is produced. Anarobic aerobic

PowerPoint Presentation:

_______are used to make alcohol. Yeasts Amoeba

Tell True or false:

Tell True or false A fish do not use oxygen to breath. True False

PowerPoint Presentation:

With Regards. Purhan Thanks For Watching

authorStream Live Help