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Nutrition in Plants Class 7 PPT

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 Page 1


CHAPTER - 1 
 
NUTRITION IN PLANTS 
MADE BY-: 
 RAHAT 
Page 2


CHAPTER - 1 
 
NUTRITION IN PLANTS 
MADE BY-: 
 RAHAT 
1) Nutrients :- 
   The components of food like carbohydrates, fats, proteins vitamins and 
minerals are called nutrients. 
   Nutrients help living organisms :- 
  i) To build their bodies. 
 ii) To grow. 
iii) To repair the damaged parts of their bodies. 
iv) To provide energy to carry out life processes. 
Page 3


CHAPTER - 1 
 
NUTRITION IN PLANTS 
MADE BY-: 
 RAHAT 
1) Nutrients :- 
   The components of food like carbohydrates, fats, proteins vitamins and 
minerals are called nutrients. 
   Nutrients help living organisms :- 
  i) To build their bodies. 
 ii) To grow. 
iii) To repair the damaged parts of their bodies. 
iv) To provide energy to carry out life processes. 
 2) Nutrition :- 
       The mode of taking food by an organism and its utilization in the body is called 
nutrition. 
3) Modes of nutrition :- There are two main modes of nutrition in living 
organisms. They are autotrophic nutrition and heterotrophic nutrition. 
i) Autotrophic nutrition :-  is nutrition in which organisms can prepare their own 
food.  
   Organisms which can prepare their own food are called autotrophs. 
ii) Heterotrophic nutrition :- is nutrition in which organisms get their food directly 
or indirectly from plants. 
   Organisms which get their food directly or indirectly from plants are called 
heterotrophs. 
 
 
Page 4


CHAPTER - 1 
 
NUTRITION IN PLANTS 
MADE BY-: 
 RAHAT 
1) Nutrients :- 
   The components of food like carbohydrates, fats, proteins vitamins and 
minerals are called nutrients. 
   Nutrients help living organisms :- 
  i) To build their bodies. 
 ii) To grow. 
iii) To repair the damaged parts of their bodies. 
iv) To provide energy to carry out life processes. 
 2) Nutrition :- 
       The mode of taking food by an organism and its utilization in the body is called 
nutrition. 
3) Modes of nutrition :- There are two main modes of nutrition in living 
organisms. They are autotrophic nutrition and heterotrophic nutrition. 
i) Autotrophic nutrition :-  is nutrition in which organisms can prepare their own 
food.  
   Organisms which can prepare their own food are called autotrophs. 
ii) Heterotrophic nutrition :- is nutrition in which organisms get their food directly 
or indirectly from plants. 
   Organisms which get their food directly or indirectly from plants are called 
heterotrophs. 
 
 
4)Photosynthesis - Food making process in plants :- 
  Photosynthesis is the process by which plants prepare their on food by using 
sunlight, water, carbon dioxide and chlorophyll. 
  Photosynthesis take place in the leaves. 
  i) Sunlight is obtained from the sun. 
 ii) Water  is absorbed by the roots and transported to the leaves. 
iii) Carbon dioxide is taken from the air through small pores in the    
      leaves called stomata.  
iv) Chlorophyll are the green pigments present in the leaves. 
Page 5


CHAPTER - 1 
 
NUTRITION IN PLANTS 
MADE BY-: 
 RAHAT 
1) Nutrients :- 
   The components of food like carbohydrates, fats, proteins vitamins and 
minerals are called nutrients. 
   Nutrients help living organisms :- 
  i) To build their bodies. 
 ii) To grow. 
iii) To repair the damaged parts of their bodies. 
iv) To provide energy to carry out life processes. 
 2) Nutrition :- 
       The mode of taking food by an organism and its utilization in the body is called 
nutrition. 
3) Modes of nutrition :- There are two main modes of nutrition in living 
organisms. They are autotrophic nutrition and heterotrophic nutrition. 
i) Autotrophic nutrition :-  is nutrition in which organisms can prepare their own 
food.  
   Organisms which can prepare their own food are called autotrophs. 
ii) Heterotrophic nutrition :- is nutrition in which organisms get their food directly 
or indirectly from plants. 
   Organisms which get their food directly or indirectly from plants are called 
heterotrophs. 
 
 
4)Photosynthesis - Food making process in plants :- 
  Photosynthesis is the process by which plants prepare their on food by using 
sunlight, water, carbon dioxide and chlorophyll. 
  Photosynthesis take place in the leaves. 
  i) Sunlight is obtained from the sun. 
 ii) Water  is absorbed by the roots and transported to the leaves. 
iii) Carbon dioxide is taken from the air through small pores in the    
      leaves called stomata.  
iv) Chlorophyll are the green pigments present in the leaves. 
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FAQs on Nutrition in Plants Class 7 PPT

1. What is nutrition in plants?
Ans. Nutrition in plants refers to the process by which plants obtain and utilize nutrients from the environment to carry out their life processes, such as growth, development, and reproduction.
2. What are the different modes of nutrition in plants?
Ans. Plants can obtain nutrients through various modes of nutrition, including autotrophic, heterotrophic, and saprophytic nutrition. Autotrophic plants can produce their food through photosynthesis, while heterotrophic plants depend on other plants or organisms for their food. Saprophytic plants obtain nutrients by decomposing dead organic matter.
3. What are the essential nutrients required by plants for growth and development?
Ans. Plants require several essential nutrients for growth and development, including macronutrients such as nitrogen, phosphorus, and potassium, as well as micronutrients such as iron, zinc, and manganese. These nutrients are obtained from the soil or water in which the plants grow.
4. How do plants absorb nutrients from the soil?
Ans. Plants absorb nutrients from the soil through their roots. The roots have specialized structures called root hairs that increase the surface area of the roots, allowing for greater absorption of nutrients. The nutrients are then transported through the plant's vascular system to the different parts of the plant.
5. What are the consequences of nutrient deficiency in plants?
Ans. Nutrient deficiency in plants can lead to a range of problems, including stunted growth, yellowing of leaves, poor fruit development, and increased susceptibility to pests and diseases. In severe cases, nutrient deficiency can lead to the death of the plant. It is important to ensure that plants receive adequate nutrients to maintain their health and productivity.
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