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UP Board Class 10 Environmental & Disaster Management — practice questions — page 2

Explore 61 free Environmental & Disaster Management questions in UP Board Class 10 Science. Open each question or exercise to read its content, reference answers and available explanation.

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Environmental & Disaster Management questions and exercises with answers

Showing questions 31–60 of 61.

Tap the item that does not belongRead the answer and worked solution →An ecosystem consists of:Read the answer and worked solution →Organisms that produce their own food using sunlight are called:Read the answer and worked solution →Decomposers help in the ecosystem by:Read the answer and worked solution →The 10% law of energy transfer states that:Read the answer and worked solution →In a typical food chain "grass → grasshopper → frog → snake", the frog is at the:Read the answer and worked solution →The flow of energy in an ecosystem is:Read the answer and worked solution →Ozone in the stratosphere is important because:Read the answer and worked solution →Stratospheric ozone is formed by the action of UV radiation on:Read the answer and worked solution →Chlorofluorocarbons (CFCs) damage the ozone layer because they:Read the answer and worked solution →The Montreal Protocol (1987) aimed at:Read the answer and worked solution →A substance broken down by biological processes is:Read the answer and worked solution →Which of the following is non-biodegradable?Read the answer and worked solution →A food web is best described as:Read the answer and worked solution →In any ecosystem, the largest population in numbers usually belongs to the:Read the answer and worked solution →The phenomenon by which non-biodegradable chemicals get progressively concentrated up the food chain is called:Read the answer and worked solution →The ozone "hole" first widely reported in the 1980s was located over:Read the answer and worked solution →A pond ecosystem provides examples of all of the following EXCEPT:Read the answer and worked solution →Why do food chains rarely have more than four or five trophic levels?Read the answer and worked solution →In which form is energy lost as it moves up the trophic levels?Read the answer and worked solution →Which gas is produced in the largest quantity by anaerobic decomposition of organic waste in landfills?Read the answer and worked solution →Ozone (O₃) at ground level is:Read the answer and worked solution →Which is the simplest correct food chain in a grassland ecosystem?Read the answer and worked solution →Increased UV radiation due to ozone depletion can cause:Read the answer and worked solution →Which group of organisms recycles nutrients in an ecosystem?Read the answer and worked solution →Composting kitchen waste at home contributes to:Read the answer and worked solution →The Tyndall effect in air refers to scattering of light by:Read the answer and worked solution →In a food chain "Grass → Deer → Tiger", which trophic level has the LEAST energy available?Read the answer and worked solution →The flow chart "Sun → producer → consumer → decomposer" describes:Read the answer and worked solution →Rule on these claims about a food chainRead the answer and worked solution →

Worked practice questions

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Questions
  1. Items
    1. Concave
    2. Convex
    3. Cuboid
    4. Plane
    Reason
    Cuboid is a solid shape; the others are types of mirrors.
    Odd item
    Cuboid
  2. Items
    1. Sodium
    2. Potassium
    3. Calcium
    4. Sulphur
    Reason
    Sulphur is a non-metal; the others are metals.
    Odd item
    Sulphur
  3. Items
    1. Neuron
    2. Artery
    3. Vein
    4. Capillary
    Reason
    A neuron is a nerve cell; the others are blood vessels.
    Odd item
    Neuron
  4. Items
    1. Reflex
    2. Magnetic
    3. Voluntary
    4. Involuntary
    Reason
    Magnetic is not a type of action; the others are.
    Odd item
    Magnetic
  5. Items
    1. Ohm
    2. Volt
    3. Litre
    4. Ampere
    Reason
    Litre measures volume; the others are electrical units.
    Odd item
    Litre
Instructions
Tap the one that doesn't fit.

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An ecosystem consists of:

  1. Biotic and abiotic components interacting in an area
  2. Only living organisms in an area (option)
  3. Only the physical environment
  4. Only carnivores and herbivores
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Correct answer: A. Biotic and abiotic components interacting in an area

1. An ecosystem includes living (biotic) and non-living (abiotic) components. 2. Biotic = plants, animals, microbes; abiotic = temperature, soil, water, minerals. 3. They interact and maintain ecological balance. _Source: syllabus Science, Ch 13 "Our Environment", §13.1_

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Organisms that produce their own food using sunlight are called:

  1. Consumers
  2. Producers (autotrophs)
  3. Decomposers (option)
  4. Carnivores
Show answer and solution

Correct answer: B. Producers (autotrophs)

1. Green plants use chlorophyll to capture sunlight and make glucose. 2. Self-feeders (autotrophs) form the first trophic level. 3. They are the producers in any food chain. _Source: syllabus Science, Ch 13 "Our Environment", §13.1_

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More Science topics

Refraction of Light and LensesEffects of Electric CurrentChemical Reactions and EquationsLife Processes in Living Organisms Part 2Metals and Non-metalsLife Processes in Living Organisms Part 1Heredity and EvolutionPeriodic Classification of Elements