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Question 3

What are outside raw materials used for by an organism?

Answer

All the living organisms require energy to live and to maintain life. Plants and animals need various separate raw materials from the outside. Plants need some raw materials as they make their food by their own. These raw materials are as follows:-

  1. Carbon dioxide:- carbon dioxide is taken up from the atmosphere through the stomata and releases oxygen.

  2. Water:- plants take water from the soil through the roots to the leaves. And, the transportation of water from the soil to the roots and then to the root cortex and then finally transported to the leaves from the stem occurs through the xylem.



  3. Sunlight is obtained from the sun to make the food, necessary for the producers (green plants).

  4. Chlorophyll:- when organisms take carbon dioxide and water from the environment, they use sunlight and convert them into the glucose or oxygen and this is taken up by the chlorophyll.

Animals feed on the plants as they are the producers plays important role in the food chain extends to the top carnivores. All animals take in food, water and oxygen from the outside according to their complexity and the needs. 

Organisms use raw material -

Food as the source of energy, oxygen for the breakdown of food to obtain energy, water is for the digestion and to maintain homeostasis that is internal temperature of the body.

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