Start learning →

State PSC Environment & Ecology — practice questions — page 10

Explore 332 free Environment & Ecology questions in State PSC Environment. Open each question or exercise to read its content, reference answers and available explanation.

Practise Environment & Ecology with Quill →

Environment & Ecology questions and exercises with answers

Showing questions 271–300 of 332.

Type the numberRead the answer and worked solution →Air and water pollution bingoRead the answer and worked solution →Forests are called green lungs because plants release oxygen through:Read the answer and worked solution →The branchy part of a tree above the stem is the:Read the answer and worked solution →The roof-like cover formed by branches of tall trees over other plants is the:Read the answer and worked solution →The horizontal layers created by trees of different crown heights are called:Read the answer and worked solution →The lowest layer of a forest is formed by:Read the answer and worked solution →In the food chain grass, insects, frog, snake, the top consumer is the:Read the answer and worked solution →Microorganisms that convert dead plants and animals into humus are:Read the answer and worked solution →The dark coloured substance formed from dead plant and animal tissue is:Read the answer and worked solution →Dead animals in a forest become food for jackals, insects, crows and:Read the answer and worked solution →Forests help maintain the balance of oxygen and which gas in the atmosphere?Read the answer and worked solution →Trees return water to the air through their leaves by:Read the answer and worked solution →Forest officers can recognise the presence of animals by their footprints and:Read the answer and worked solution →Seedlings sprouting from a heap of animal dung show that animals help forests by:Read the answer and worked solution →In a forest, rain does not hit the ground directly because the canopy:Read the answer and worked solution →Forests act as natural absorbers of rainwater and so help maintain the:Read the answer and worked solution →Without trees, heavy rain hitting the ground directly may cause:Read the answer and worked solution →Roots of trees protect soil by:Read the answer and worked solution →Villagers near a forest enjoy less noise pollution because the forest:Read the answer and worked solution →Tibu's village and its fields were created by clearing forest about how many years ago?Read the answer and worked solution →The forest near Tibu's village is not regenerating because of indiscriminate felling and:Read the answer and worked solution →Which forest trees did Tibu help the children identify?Read the answer and worked solution →People of tribes living in forests have traditional knowledge about:Read the answer and worked solution →Catch the forest treesRead the answer and worked solution →Pop the forest productsRead the answer and worked solution →Run the forest chainRead the answer and worked solution →Slice the forest wordsRead the answer and worked solution →Plant or animalRead the answer and worked solution →Sort layers, cycles and servicesRead the answer and worked solution →

Worked practice questions

Type the number

Read exercise and reference answers
Questions
  1. Answer
    78
    Question
    Per cent of air that is nitrogen, about
  2. Answer
    21
    Question
    Per cent of air that is oxygen, about
  3. Answer
    1985
    Question
    Year the Ganga Action Plan was launched
  4. Answer
    2016
    Question
    Year the National Mission for Clean Ganga began
  5. Answer
    5000
    Question
    Industries in Kanpur, more than
  6. Answer
    2
    Question
    Degrees Celsius rise feared by century end, more than
Instructions
Type the number only.
_Source: syllabus Science, Chapter 18, Pollution of Air and Water._

Open this exercise →

Air and water pollution bingo

Read exercise and reference answers
Clues and terms
  1. Clue
    Smoke plus fog in winter.
    Item
    Smog
  2. Clue
    Sulphuric and nitric acid rain.
    Item
    Acid rain
  3. Clue
    Corrosion of the Taj.
    Item
    Marble cancer
  4. Clue
    Fridge gas that eats ozone.
    Item
    CFC
  5. Clue
    Heat trapped by the atmosphere.
    Item
    Greenhouse
  6. Clue
    Pact to cut greenhouse gases.
    Item
    Kyoto Protocol
  7. Clue
    July tree planting festival.
    Item
    Van Mahotsav
  8. Clue
    First plan to clean the Ganga.
    Item
    GAP 1985
  9. Clue
    New Clean Ganga mission.
    Item
    NMCG 2016
Instructions
Read each clue and tap the term it describes.
_Source: syllabus Science, Chapter 18, Pollution of Air and Water._

Open this exercise →

Forests are called green lungs because plants release oxygen through:

  1. Photosynthesis
  2. Respiration
  3. Transpiration
  4. Decomposition
Show answer and solution

Correct answer: A. Photosynthesis

1. Plants make food using sunlight. 2. Photosynthesis releases oxygen. 3. Forests balance oxygen and carbon dioxide. _Source: syllabus Science, Chapter 17, Forests: Our Lifeline._

Open this question →

How to practise

  1. Choose a Environment & Ecology question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Environment topics

Science & TechnologyCurrent AffairsIndian GeographySoil & VegetationNational ParksConservationEndangered SpeciesProtected Areas