Nutrition in Plants

Nutrients can be defined as the components that are found in our food such as carbohydrates, vitamins, minerals, fats etc. These components are important for the survival of the living organisms. Plants produce their own food while animals do not produce their own food and depend on plants. We indirectly or directly depend on plants and animals for our food needs.

Modes Of Nutrition

The process of obtaining food and utilizing it to grow, stay healthy and repair any damaged body part is known as nutrition. Plants produce their food by taking raw materials from their surroundings, such as minerals, carbon dioxide, water, and sunlight. There are two modes of nutrition:

  • Autotrophic – Plants are called primary producers as they exhibit autotrophic nutrition. Plants synthesize their food by using light, carbon dioxide, water, carbon dioxide, or other chemicals.

  • Heterotrophic – As both animals and human beings depend on plants for their food, so they are called heterotrophs. 

Autotrophic Nutrition in Plants

Photosynthesis

  • It is a process through which plants produce their own food.

  • The chloroplast is the site of photosynthesis.

  • Food production primarily is carried out in leaves. Water and minerals from the soil are absorbed by the root and transported to the leaves through vessels. Carbon dioxide reaches leaves through stomata – which are small pores on leaves surrounded by guard cells.

  • A green pigment present in leaves which helps the leaves capture energy from sunlight to prepare their food is called Chlorophyll. This production of food which takes place in the presence of sunlight is known as photosynthesis. Hence, the sun serves as the primary source for all living organisms

  • During photosynthesis, water and carbon dioxide are used in the presence of sunlight to produce carbohydrates and oxygen. Starch is released in the process, which is a carbohydrate.

  • Photosynthesis provides food to all living beings.

  • Oxygen, one of the main components of life on earth, is released by the plants during photosynthesis.

Conditions necessary for Photosynthesis

  • Sunlight

  • Water

  • Carbon dioxide

  • Chlorophyll

Steps in Photosynthesis

  • Absorption of energy from sunlight

  • Conversion of light energy into chemical energy

  • Hydrolysis of water into oxygen and hydrogen

  • Carbon dioxide is reduced to form glucose by utilizing chemical energy

FAQ (Frequently Asked Questions)

1. What are Nutrients?

Nutrients can be defined as the components that are found in our food such as carbohydrates, vitamins, minerals, fats etc. These components are important for the survival of the living organisms.

2. What are the modes of nutrition in plants?

The process of obtaining food and utilizing it to grow, stay healthy and repair any damaged body part is known as nutrition. Plants produce their food by taking raw materials from their surroundings, such as minerals, carbon dioxide, water, and sunlight. There are two modes of nutrition:

  • Autotrophic – Plants are called primary producers as they exhibit autotrophic nutrition. Plants synthesize their food by using light, carbon dioxide, water, carbon dioxide, or other chemicals.

  • Heterotrophic – As both animals and human beings depend on plants for their food, so they are called heterotrophs. 

3. What are the conditions that are necessary for Photosynthesis?

  • Sunlight

  • Water

  • Carbon dioxide

  • Chlorophyll

4. What are the steps involved in photosynthesis?

The steps involved in photosynthesis are - 

  • Absorption of energy from sunlight

  • Conversion of light energy into chemical energy

  • Hydrolysis of water into oxygen and hydrogen

  • Carbon dioxide is reduced to form glucose by utilizing chemical energy