Start learning →

State PSC Environment & Ecology — practice questions — page 6

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 151–180 of 332.

Type the numberRead the answer and worked solution →Environmental issues bingoRead the answer and worked solution →A gardener notes temperature, rainfall, wind and soil in her plot. These are which components of the ecosystem?Read the answer and worked solution →A garden, a crop field and an aquarium are all examples of:Read the answer and worked solution →Green plants and certain bacteria that make food by photosynthesis are called:Read the answer and worked solution →Bacteria and fungi that break down dead remains into simple inorganic substances are:Read the answer and worked solution →Each step or level of a food chain is called a:Read the answer and worked solution →In a food chain, herbivores or primary consumers occupy which trophic level?Read the answer and worked solution →Large carnivores or tertiary consumers form which trophic level?Read the answer and worked solution →Green plants in a land ecosystem capture about what share of the sunlight falling on their leaves?Read the answer and worked solution →On average, what share of food eaten at one trophic level becomes available to the next?Read the answer and worked solution →Because so little energy passes on, food chains generally have how many steps?Read the answer and worked solution →A network of many interlinked food chains shown as branching lines is a:Read the answer and worked solution →Energy flow through the trophic levels of an ecosystem is:Read the answer and worked solution →Pesticide residues build up most in which organisms of a food chain?Read the answer and worked solution →Progressive accumulation of non-degradable chemicals at each trophic level is called:Read the answer and worked solution →Ozone is a molecule formed by how many atoms of oxygen?Read the answer and worked solution →Ozone high in the atmosphere shields the Earth from:Read the answer and worked solution →Atmospheric ozone began to drop sharply in which decade?Read the answer and worked solution →Which chemicals, used as refrigerants and in fire extinguishers, deplete the ozone layer?Read the answer and worked solution →In 1987, which UN body forged an agreement to freeze CFC production at 1986 levels?Read the answer and worked solution →Plastics are not broken down by bacteria because:Read the answer and worked solution →Substances broken down by biological processes are called:Read the answer and worked solution →Changes in which practice have made much of our household waste non-biodegradable?Read the answer and worked solution →Catch the biodegradable wasteRead the answer and worked solution →Pop the abiotic factorsRead the answer and worked solution →Run the trophic levelsRead the answer and worked solution →Slice the ecology wordsRead the answer and worked solution →Natural or human-madeRead the answer and worked solution →Sort the ecosystem rolesRead the answer and worked solution →

Worked practice questions

Type the number

Read exercise and reference answers
Questions
  1. Answer
    1986
    Question
    Year of the Environment (Protection) Act
  2. Answer
    99
    Question
    Per cent particulate matter a precipitator removes, over
  3. Answer
    150
    Question
    Decibel level at which a brief exposure damages ear drums
  4. Answer
    1987
    Question
    Year the Montreal Protocol was signed
  5. Answer
    67
    Question
    Per cent forest cover recommended for hills
  6. Answer
    1974
    Question
    Year of the Chipko Movement
Instructions
Type the number only.
_Source: syllabus Biology, Chapter 16, Environmental Issues._

Open this exercise →

Environmental issues bingo

Read exercise and reference answers
Clues and terms
  1. Clue
    Removes dust with charged plates.
    Item
    Precipitator
  2. Clue
    Water or lime spray removes SO2.
    Item
    Scrubber
  3. Clue
    Measure of organic load in sewage.
    Item
    BOD
  4. Clue
    Nutrient-rich ageing lake.
    Item
    Eutrophic
  5. Clue
    Toxin rises up the food chain.
    Item
    Biomagnify
  6. Clue
    Plastic powder for roads.
    Item
    Polyblend
  7. Clue
    Unit of ozone thickness.
    Item
    Dobson
  8. Clue
    Tree-hugging movement of 1974.
    Item
    Chipko
  9. Clue
    Forests managed with local people.
    Item
    JFM
Instructions
Read each clue and tap the term it describes.
_Source: syllabus Biology, Chapter 16, Environmental Issues._

Open this exercise →

A gardener notes temperature, rainfall, wind and soil in her plot. These are which components of the ecosystem?

  1. Abiotic
  2. Biotic
  3. Trophic
  4. Organic
Show answer and solution

Correct answer: A. Abiotic

1. Living organisms are biotic components. 2. Physical factors are abiotic components. 3. Both interact to maintain balance. _Source: syllabus Science, Chapter 15, Our Environment._

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