EVS Study Notes on Food – Check Food EVS Study Material

By BYJU'S Exam Prep

Updated on: September 25th, 2023

EVS is an important section in CTET and STET for Paper 1. It is important to gain proper knowledge of each topic to master this subject. One of the important topics of the subject is food. In this 30 questions are asked in the exam. In this article, we will read the best Food Study notes that are important for the upcoming CTET exam.

Candidates must know well the detailed syllabus and subject-wise important topics for the right exam preparation. The exam includes several subjects with EVS being important and the most scored subject. Candidates must necessarily check Food Study notes and material while preparing for the CTET exam.

The following EVS Food Study material included the following topics:

  1. Carbohydrates
  2. Protein
  3. Fats


All the materials which are consumed by the organisms to provide energy for their biological activity help to increase physical activity, control the body and offer to help to build the necessary compounds are called FOOD. Food is the only source of energy for organisms required for biological processes. Food nourishes our bodies but we can eat those which is nutritional as every substance has different nutritional competence.

Foods based on food sources can be grouped into two classes:

Plant products: Humans depends on plants for food, these foods are known as plant products. Such as fruits, vegetables, grains, Masala, beverages and more.

Animal products: Humanly depends on plants as well as an animal for food. Animal-derived foods are meat, fish, eggs and more.

Food that provides nutrition to the body consists of many chemical substances, these chemicals are divided into classes which are known as nutrients.

These nourishing ingredients are:

  • Carbohydrates
  • Protein
  • Fat
  • Vitamins
  • mineral salts
  • water

Their levels in different foods vary in quality and nutrients but in some foods, it is much higher which represents their best qualities, Their source varies from individual to individual elements of food, in some it is high, and in some, it is medium and low.


Carbohydrates are one of the main types of nutrients. They are the most important source of energy for your body. Your digestive system changes carbohydrates into glucose (blood sugar). Your body uses this sugar for energy for your cells, tissues, and organs

Carbohydrates are found in a wide array of both healthy and unhealthy foods—bread, beans, milk, popcorn, potatoes, cookies, spaghetti, soft drinks, corn, and cherry pie. They also come in a variety of forms. The most common and abundant forms are sugars, fibres, and starches.

Foods high in carbohydrates are an important part of a healthy diet. Carbohydrates provide the body with glucose, which is converted to energy used to support bodily functions and physical activity.

The functions of carbohydrates: nearly all the interactions that occur in the body’s main source of energy are carbohydrates.

Key Facts:

  • In the human body, energy is stored as glycogen and starch, which are used in times of emergency.
  • Its deficiency in human beings leads to a reduction in the ability to act.
  • Increases Sloth and laziness from taking too much carbohydrate increases. 

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Protein word is derived from the Latin word ‘Patio’, whose meaning is of major importance. It is considered the most important element of life. There are primarily two types –  enzymatic proteins and structural proteins. Enzymatic protein in the body helps in conducting all metabolic functions, such as the receipt of energy from the Carbohydrate complex after passing through many levels. Structural proteins make up the various parts of the body and are used to fix the damage.

Key Facts:

Muscle, skin, hair, nails, etc. All are made of protein.

  • Haemoglobin found in red blood cells is also made up of the protein whose main function is, the exchange between oxygen and carbon dioxide.
  • Protein is a polymer that is composed of many units called amino acids.
  • Meat, fish, milk, eggs, and pulses are the main source of protein.
  • Soybean is considered the best source of protein
  • After water, protein is found in a high amount in the human body.
  • Protein is found in most tissues, and the remaining is found in bones, teeth, skin, hair, nails and other soft tissues.
  • 1/3 part of the total protein found in the body in muscles, bones part 1/5 cartilage teeth, is found in the skin and other tissues and body fluids such as blood count – haemoglobin lymph,  brain, Spinal cord.
  • Nucleoprotein is found in the nucleus of cells.

Functions of Protein:

  • Performs the function of metabolism
  • Plays a key role in the creation of the physical components.
  • Repairs the damage
  • Replaces dead cells and tissues
  • The increases the growth of the body


Like carbohydrates, fats and protein in the diet are also essential nutrients that are found in fatty foods for which we have to rely on both animal and vegetable fat in the body of animals and plant materials such as – grains, seeds, and fruit oil is found as an important source of fat in the body to provide energy, their energy is often more than doubled in value than carbohydrates. Fats produce more energy than twice the amount of carbohydrates where there are 4 calories in 1 gram, and 1 gram of fat has 9 calories of energy produced.

Key Facts:

  • Fat is an organic compound that consists of fat. Is the combination of chemical elements carbon (C), hydrogen (H), and oxygen (O).
  • The construction of a glycerol fatty substance is a combination of fatty acids in fat. carbon, hydrogen, and oxygen content significantly less than the combined amount.
  • The ratio of hydrogen and oxygen where carbohydrates 1:2 is the fat in the ratio of 1:3 to 1:7 is possible due to the corresponding properties of the fat having more energy power.

Functions of fat:

  • Is useful in the production of energy
  • Plays a key role in the structure of cell membranes.
  • Is used as the accumulated energy.

This article tends to be beneficial for the following exams – REET, UPTET, CTET, Super TET, DSSSB, KVS, etc.

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Best Books for CTET Environmental Studies Food Preparation

It is important to check the best CTET books while preparing for this topic for an upcoming exam. It is important to refer only to the best books as suggested by the subject expert for exam preparation. Some of the important books have been included here.
Serial No. Book Name Author Name
1. CTET 2021: Paper 1 | Environmental Studies | By Pearson Kumar Sandeep
2. Ctet Paper -1 Environmental Studies SAROHA PUBLICATION


EVS Study Notes on Food – Check Food EVS Study Material

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