NCERT Solutions For Class 10 Science Chapter 15: Our Environment

The NCERT Solutions for Class 10 Science Chapter 15 Our Environment are provided in the article below. It covers all the important definitions, concepts, and methodologies that will be really beneficial for the students. The important topics that are included in this chapter are:

Expected no. of Questions: 2-3 questions of around 5 marks.

Download PDF: NCERT Solutions for Class 10 Science Chapter 15 Our Environment


NCERT Solutions for Class 10 Science Chapter 15

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Class 10 Science Chapter 15 Our Environment: Important Topics

The word environment originated from the French word “environ” which means surrounding. Thus, the environment can be defined as all the living and nonliving things that surround us and are responsible for nourishing the life that exists on earth. All the organisms, plants, human beings and natural resources such as water, soil, and physical interactions form an important aspect of our environment. Due to rising concerns such as global warming, pollution, deforestation and climate change, there is a need to conserve and protect our environment from further destruction.

  • Ecosystem

An ecosystem is referred to as a geographic area where plants, animals, and other organisms, even weather, and landscape, work together to form a life. Ecosystems comprise biotic or living, parts, as well as abiotic factors, or nonliving parts. Biotic factors include plants, animals, and other organisms.

  • Biodegradable and non-biodegradable substances

Biodegradable substances are substances that can be easily broken down by the action of bacteria. Other substances or materials like plastics, metallic cans, and pesticides that cannot be broken down easily by biological processes are named non-biodegradable substances.

Chapter Related Links:

Ecosystems Types of Ecosystem Components of the ecosystem
Food Web Food Chain Difference Between Food Chain and Food Web
Ozone Layer and How it is getting depleted Biodegradable and non-biodegradable substances Ozone Layer

Science Study Guides:

CBSE X Related Questions

  • 1.
    From the given situations, identify 'Chemotropic' and 'Geotropic' movements in parts of plants, respectively:
    (i) Growth of pollen tube towards ovule.
    (ii) Movement of sunflower towards sunlight.
    (iii) Movement of root towards Earth/Gravity.
    (iv) Movement of leaves due to breeze.

      • (i) and (iii) respectively
      • (iii) and (i) respectively
      • (i), (ii) and (iii), (iv) respectively
      • (i), (iii) and (ii), (iv) respectively

    • 2.
      When an element 'X' reacts with water, it starts floating. Identify the element 'X':

        • Potassium
        • Calcium
        • Sodium
        • Iron

      • 3.
        In human beings, the implantation of fertilised egg takes place in which part of female reproductive system?

          • Oviduct
          • Cervix
          • Uterus
          • Vagina

        • 4.

          Identify the type of reproduction shown in the diagram given below: 

            • Budding
            • Fragmentation
            • Spore Formation
            • Binary Fission

          • 5.
            Which structure in a leaf is mainly responsible for gaseous exchange?

              • Xylem
              • Stomata
              • Phloem
              • Cuticle

            • 6.
              Draw a neat diagram to show germination of pollen on the female reproductive part of the flower. Name and label only the following parts:
              (a) The part that receives the pollen grain.
              (b) The structure that carries the male germ cell to reach the female germ cell.

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