NCERT CBSE Class 10th Science Chapter 6: Life Processes

Safalta Expert Published by: Sylvester Updated Tue, 28 Jun 2022 01:41 PM IST

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NCERT CBSE Class 10th Science Chapter 6: Life Processes

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The sixth chapter in Science textbook is 'Life Processes'. This chapter discusses about basic life process occurred in daily lives of plants and animals which includes nutrition, respiration, circulation and excretion.


Nutrition

The process by which an organism takes food and utilizes it, is called nutrition.


Nutrients

Materials which provide nutrition to organisms are called nutrients. Carbohydrates, proteins and fats are the main nutrients and are called macronutrients. Minerals and vitamins are required in small amounts and hence are called micronutrients.


Modes of Nutrition

1. Autotrophic Nutrition
2.

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Heterotrophic Nutrition


Autotrophic Nutrition

The mode of nutrition in which an organism prepares its own food is called autotrophic nutrition. Green plants and blue-green algae follow the autotrophic mode of nutrition. The organisms which carry out autotrophic nutrition are called autotrophs. Autotrophic nutrition is fulfilled by the process, by which autotrophs intake CO2 and H2O, and convert these into carbohydrates in the presence of chlorophyll, sunlight is called photosynthesis.
 

Photosynthesis

The process by which green plants prepare food is called photosynthesis. During this process, the solar energy is converted into chemical energy and carbohydrates are formed. Green leaves are the main site of photosynthesis. The green portion of the plant contains a pigment chloroplast, chlorophyll (green pigment).


Heterotrophic Nutrition

When an organism depends on others for food, such mode of nutrition is called heterotrophic mode of nutrition.


The topics discussed in this chapter are as follows:

  • Saprophytic Nutrition
  • Parasitic Nutrition
  • Nutrition in Amoeba
  • Nutrition in Paramoecium
  • Nutrition in Humans
  • Human Digestive System
  • Holozoic Nutrition
  • Human Respiratory System
  • Respiration in Plants
  • Transpiration
  • Transportation in Plants and Human Beings
  • Excretion in Plants and Human Beings

Students can view and download the chapter from the link given below.

Click here to get the complete chapter


Also Check

Chapter 1: Chemical Reactions and Equations
Chapter 2: Acids, Bases and Salts
Chapter 3: Metals and Non-Metals
Chapter 4: Carbon and its compounds
Chapter 5: Periodic Classification of Elements
Chapter 7: Control and Coordination
Chapter 8: How do organisms reproduce?
Chapter 9: Heredity and Evolution
Chapter 10: Light - Reflection and Refraction
Chapter 11: The Human Eye and the Colourful World
Chapter 12: Electricity
Chapter 13: Magnetic Effects of Electric Current
Chapter 14: Sources of Energy
Chapter 15: Our Environment
Chapter 16: Sustainable Management of Natural Resources


Check out Frequently Asked Questions (FAQs) for Chapter 6: Life Processes

What is the mode of nutrition in fungi?

Saprophytic nutrition is the mode of nutrition that is seen in fungi.

Name the pigment which can absorb solar energy.

Chlorophyll is the pigment which can absorb solar energy.

Define breathing.

Breathing is a process by which organisms inhale oxygen. The inhaled oxygen gets diffused into the blood and the carbon dioxide from the blood diffuses back into the alveoli from where it is exhaled.

Name the two stages in photosynthesis.

The two stages in photosynthesis are
(i) Light reaction and
(ii) Dark reaction

State the function of epiglottis.

Epiglottis prevents the food from entering into the trachea.

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