Necessity Of Water

Water of Class 7

Water is necessary for the growth and sustenance of both plant and animal lives. Water makes up a large percentage of animal and plant cells.

Importance of water in human life

  • Water dissolves all salts and nutrients present in the food.
  • An aqueous medium is required to carry out all the metabolic reactions.
  • Water helps in regulating our body temperature.
  • Water is required for removal of waste products.

Importance of water in plant life

  • Water helps in germination of seeds and growth of plants.
  • Green plants require water during photosynthesis.
  • Water provides a medium for the transport of minerals and food.

NCERT SOLUTIONS FOR CLASS-7 SCIENCE (Science for grade-7 NCERT solutions)

Chapter 1 - Nutrition in Plants

Chapter 2 - Nutrition in Animals

Chapter 3 - Fibre to Fabric

Chapter 4 - Heat

Chapter 5 - Acids, Bases and Salts

Chapter 6 - Physical and Chemical Changes

Chapter 7 - Weather, Climate and Adaptations of Animals to Climate

Chapter 8 - Winds, Storms and Cyclones

Chapter 9 – Soil

Chapter 10 - Respiration in Organisms

Chapter 11 - Transportation in Animals and Plants

Chapter 12 - Reproduction in Plants

Chapter 13 - Motion and Time

Chapter 14 - Electric Current and Its Effects

Chapter 15 – Light

Chapter 16 - Water: A Precious Resource

Chapter 17 - Forests: Our Lifeline

Chapter 18 - Wastewater Story

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