Alert: You are not allowed to copy content or view source
Register for Maths, Science, English, GK Olympiad Exam Click here | Check Olympiad Exam Dates here | Buy Practice Papers for IMO, IOM, HEO, IOEL etc here | Login here to participate in all India free mock test on every Saturday

Was this article Helpful?

Respiration in Organism

Respiration in Organism
science Square
Science Square

When energy is produced through a biological process with the utilization of food then that process is known as Respiration. For the survival and existence of living beings Respiration is necessary. Without respiration, survival is not possible for even a second.

Energy is produced by respiration when carbohydrate is oxidized.

Carbohydrate + Oxygen /Carbon dioxide + Water + Energy

Site of Respiration

Inside the cells happens Respiration. Due to the happening inside the cells, it is also known as Cellular Respiration. The site of respiration is a cell organelle called as mitochondria.

Types of Respiration

1. Aerobic Respiration

 When there is the presence of oxygen then Aerobic Respiration takes place. The end products   are water and carbon dioxide. This happens in almost all the organisms.

 

 2. Anaerobic Respiration

It takes place when oxygen is not present. It mostly occurs in microbes. The end products of anaerobic respiration are carbon dioxide and alcohol. Lactic acid is also formed in some cases.

 

Breathing

When the air is taken in and given out then that process is called as Breathing. It involves two steps-

  • Inhalation
  • Exhalation

In inhalation, air is taken in and it is rich in oxygen whereas in exhalation air is breathe out and it is rich in carbon dioxide.

Rate of Breathing

The rate of breathing is quite normal when we are engaged in the normal activities. It gets increased during stress full physical works like swimming, jogging, running, etc. and decreases while we are sleeping or taking rest.

Process of Breathing

The movement of diaphragm controls breathing. Between chest and abdomen, there is a membrane which is called as a diaphragm.

When the diaphragm moves down it causes the expansion of ribcage which also creates the expansion of the lungs. Due to this air enters the lungs. This whole process is called as inhalation or inspiration.

When the diaphragm moves contraction of ribcage takes place which also contracts lungs and air moves out. This process is called as exhalation or expiration.

 Breathing in other Animals

Some animals which have belongingness to aves, amphibia, mammalian and reptilian use their lungs to breathe.

Amphibians use their skin for breathing while they are in the water.

 Breathing in Fish

There is a pair of grills with fish which helps them in the process of breathing inside the water.

Breathing in Plants

There are various sizes of plants. So respiratory organs cannot be developed as the growth is unlimited. There is an external layer of cells through which plants breathe. Root hair helps roots to breathe and epidermis helps stems to breathe. Leaves use small pores known as stomata for breathing.

Recap

  • When energy is produced through a biological process with the utilization of food then that process is known as Respiration.
  • Without respiration, survival is not possible for even a second.
  • The site of respiration is a cell organelle called as mitochondria.
  • Aerobic and anaerobic are the two types of respiration.
  • When the air is taken in and given out then that process is called as Breathing.
  • The movement of diaphragm controls breathing.

Comments

Please to write a comment.

Quiz for Respiration in Organism

Q.1

Glucose can provide instant energy because:

a) it has extremely small molecules
b) it can be absorbed by the body as it is
c) it is in liquid form
d) none of these

Q.2

Anaerobic respiration results in the production of:

a) alcohol
b) HCL
c) oxygen
d) citric acid

Q.3

The release of air during respiration is called:

a) inhaling
b) exhaling
c) breathing
d) oxidation

Q.4

Fishes respire using:

a) lungs
b) spiracles
c) skin holes
d) gills

Q.5

Diaphragm is located:

a) above the chest
b) below the abdominal cavity
c) between the chest and abdominal cavity
d) between he stomach and the intestine

Q.6

___________ takes place during aerobic respiration.

a) complete oxidation
b) incomplete oxidation
c) alcohol formation
d) none of these

Q.7

During respiration, glucose gets broken down into:

a) carbon-monoxide and water
b) carbon-dioxide and water
c) carbohydrates
d) amino acids

Q.8

In insects, the exchange of gases takes place through _______.

a) stomata
b) gills
c) moist skin
d) trachea

Q.9

The average breathing rate in an adult human is:

a) 10 times/minute
b) 18-20 times/minute
c) 15-18/minute
d) 30 times/minute

Q.10

Thin walled balloon like structures present in the lungs are known as:

a) alveoli
b) bronchi
c) arteries
d) air bladder

Your Score: 0/10

Other Chapters of Class 7

  EXPLORE  

70%