Need Help?

Get in touch with us

bannerAd

How do Plants Get Energy? | Definition and its Importance

Aug 19, 2022
link

Key Concepts

  • Importance of food
  • Food sources
  • Requirements of plants to get energy: Air & Water
  • Components of air
  • Importance of water

introductionIntroduction

To stay alive, grow healthy, and perform various activities, all living things need energy, and we all know from our last session that living things get energy from food. 

Definition of food: 

Food is an edible substance eaten by humans and other animals to get the energy to do work, grow, maintain our bodies, and remain healthy. 

Importance of food 

  • We know that all living things need food and water to live.  
  • Food provides essential nutrients to help us grow and heal when we are injured or ill.  
  • Thus, food keeps us healthy and provide us with essential nutrients to fight diseases and maintain body functions.  
  • Different people eat various kinds of food according to their habits, lifestyle, taste, region, religion, availability, and various other factors. 

Sources of food 

Let us now learn about food variety and food sources. 

Plant source 

  • For us, several parts of the plant serve as sources of food.  
  • For example, we eat leafy vegetables, fruits, and some parts of plants like stems and roots. 
  • So, we can say that green plants are the primary source of food. 
  • Humans, some birds, and herbivores animals use plants as a source of food.  

Animal source 

Animal products used as food are: 

  • Meat – Goat, chicken, pork, fish, prawns, etc.  
  • Egg – Eggs of hen, duck, goose. 
  • Milk – Dairy products obtained from cows, buffalos, camels, goats in a dairy farm. 
  • Honey – Bees collect nectar (sweet juices) from flowers, convert it into honey and store it in their hive. 
  • Humans, birds, and carnivores use animals as a source of food.  

Where do plants get their energy? 

Air and water 

Plants are living organisms. They also require food to get the energy to grow and to perform various activities in their body. From our previous session, we know that plants are producers. They can make their own food by using simple components. 

parallel

Three essential components required by the plants to get their food are: 

  1. Air 
  1. Water 
  1. Sunlight 
Plant
  1. Air 

Air is all around us. 

We can feel the presence of air but cannot see it around us. 

Air is a mixture of many gases. 

Air

Carbon dioxide (CO2 

parallel

Carbon dioxide is one of the important gas in our atmosphere and around 0.4% in nature. We humans and animals, during respiration, produce carbon dioxide that is released into the air. 

Too much carbon dioxide is poisonous to our environment.   

  1. Water (H2O) 

Water is essential for all living organisms, around 71% of the earth surface is covered by water.  

Plants use water to make their food. Plants absorb water through their roots. 

  1. Sunlight  

Plants get their energy from sunlight as they use sunlight during photosynthesis in the daytime. 

Summary:

  1. We need food to get the energy to perform various activities.
  2. Plants and animals are major sources of food.
  3. Vegetables, fruits, grains, etc., are products of plants.
  4. Milk, meat, cheese, etc, are products of animals.
  5. Plants need sunlight, carbon dioxide, and water to make their food.

Comments:

Related topics

Character Displacement : Abstract and History

Introduction:  CHARACTER DISPLACEMENT   Abstract  Introduction  Character displacement favors the evolution of novel resource use or reproductive traits, drives divergence between sympatric and allopatric conspecific populations, and both initiate and finalize the process of speciation. Despite the significance of character displacement, research has been largely focused on whether it occurs or not. However, it is needed […]

Read More >>

Process of Natural Selection and Evolution

Key Concepts • Natural selection • Variation • Adaptation • Process of natural selection Introduction Natural selection is one of the important mechanisms of evolutionary change and is the process responsible for the evolution of adaptive features in various species. It is a force that causes groups of organisms to change over time and it […]

Read More >>

Release of Energy – Detailed Explanation

Introduction Release of Energy   Food web organisms transmit energy from producers to consumers. Organisms require energy to complete complicated activities. The great majority of energy in food webs comes from the Sun and is turned (processed) into chemical energy via the photosynthesis process in plants. When molecules are broken down during respiration in plants, a […]

Read More >>

Formation of Food Molecule – Types, Importance

Key Concepts Food Molecules Carbohydrates Fats/Lipids Proteins Process of photosynthesis Importance of photosynthesis Step involved in photosynthesis Introduction Food Molecules   Food is made up of many biological molecules that provide us with energy and include chemicals that we require to develop and repair ourselves and assist our cells to work in our bodies. Carbohydrates and […]

Read More >>

Other topics