How do plants and animals maintain the balance of oxygen and carbon-dioxide in air?

How do plants and animals maintain the balance of oxygen and carbon dioxide in the air?

संक्षेप में उत्तर

Respiration in plants:
During respiration, plants take in oxygen and release carbon-di-oxide, just as animals also do. Gaseous exchange with air in the atmosphere takes place in plants with stomata.
Photosynthesis:
During photosynthesis, carbon-di-oxide from the air and water from the soil react in the presence of sunlight to produce food. Plants release oxygen during photosynthesis which is much more than the oxygen consumed by the plants during respiration.
Respiration in animats:
When we breathe in the air, the oxygen present in the air reacts chemically with digested food within the body to produce carbon-di-oxide gas. The inhaled air contains more oxygen while the exhaled air contains more carbon-di-oxide.
So plants sent out more oxygen during photosynthesis. Animals sent out more carbon-di-oxide during respiration. Plants take carbon-di-oxide for photosynthesis. Animals take oxygen during respiration. So plants and animals maintain the balance of oxygen and carbon-di-oxide in the air.

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अध्याय 4: Air - Evaluation [पृष्ठ ५६]

अध्याय 4 Air
Evaluation | Q X. 1. | पृष्ठ ५६

Explain the conversion of nitrogen into nitrates during lightning.

Write ‘true’ or ‘false for the following;

The major component of air is oxygen.

How will you prove that soil contains air in it?

Arrange the following statements in correct sequence

Plants manufacture food by a process called photosynthesis.
Plants require energy for their growth.
Plants take in oxygen and release carbon dioxide just as animals.
Plants take carbon dioxide from the atmosphere, use chlorophyll in the presence of sunlight and prepare food.
Such oxygen is available to animals and human beings for breathing.
During this process, oxygen is released by plants.

Why do traffic assistants wear a mask on duty?

______ present in the air is needed for respiration.

All living things use oxygen for breathing.

What is the presence of harmful substance in the air called?

Match the following:

Match the following