Tag: living world and classification

Questions Related to living world and classification

Which of the following is a defining characteristic of living organisms?

zoology biology : an introduction characteristics of life living world and classification attributes of living organisms

  1. Growth

  2. Ability to make sound

  3. Reproduction

  4. Response to external stimuli

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Correct Option: D
Explanation:

In physiology, a stimulus is a perceptible change in the interior or outside condition. The capacity of a living being or organ to react to outside upgrades is called affectability. 

So, the correct option is 'Response to external stimuli'.

All living things perform the action of 

biology biology : an introduction characteristics of life living world and classification attributes of living organisms

  1. Eating

  2. Growing

  3. Breathing

  4. All of the above

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Correct Option: D
Explanation:
All living things show following distinguished characters
  • Reproduction and metabolism
  • Response to stimuli.
  • Growth and development.
  • Adaptation through evolution
For showing these characters they perform an act of eating, growing, adapting, moving and breathing.
Hence the option D "all of the above" is correct.

Fish breathe through

biology biology : an introduction characteristics of life living world and classification attributes of living organisms

  1. Gills

  2. Lungs

  3. Stomata

  4. Skin

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Correct Option: A
Explanation:
In aquatic animals such as fish, respiration takes place through special respiratory organs called gills. Gills are present on lateral sides of the head of fish. It is made of gill filaments present on gill arches which are heavily supplied with blood capillaries for an exchange of gases. the filaments increase the area of absorption.
Hence the correct option is A "gills".

When living things grow old, they

    biology biology : an introduction characteristics of life living world and classification attributes of living organisms

    1. Move

    2. Breathe

    3. Eat

    4. Die

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    Correct Option: D
    Explanation:

    Humans looks different as they age. Height and weight increases with the time. All living things grow and change. Ultimately, all living things grow old and die. Non-living things do not grow.