Olympiad – Class X – Science - Bio - Life Processses

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Question - 1

Identify the type of nutrition exhibited by the given figure.

  • A Autotrophic nutrition
  • B Saprophytic nutrition
  • C Parasitic nutrition
  • D Symbiotic nutrition

Question - 2

What is the aim of the given experiment?

  • A To show that chlorophyll is necessary for photosynthesis
  • B To show that sunlight is necessary for photosynthesis
  • C To show that oxygen is released as a result of photosynthesis
  • D To show that leaves can be double coloured

Question - 3

What is substance 'X' in the given experimental setup?

  • A Potassium hydroxide
  • B Sodium bicarbonate
  • C Sodium carbonate
  • D Potassium sulphate

Question - 4

What happens to the air as it passes through the nasal cavity?

  • A Filtered in the nostrils
  • B Moistened by mucus
  • C Warmed to the body temperature
  • D All of these

Question - 5

Identify correctly the parts labelled Q, R and S in the figure given below

  • A Q R S Bronchus Bronchiole Trachea  
  • B Q R S Trachea Bronchus Bronchiole  
  • C Q R S Bronchiole Trachea Bronchus  
  • D Q R S Trachea Bronchus Alveolus  

Question - 6

Identify pathway of carbon dioxide after the exchange of gases in lungs?

  • A Alveolus \(\rightarrow \) bronchiole \(\rightarrow \) bronchus \(\rightarrow \) trachea \(\rightarrow \) nose
  • B Alveolus \(\rightarrow \) bronchus \(\rightarrow \) bronchiole \(\rightarrow \) trachea \(\rightarrow \) nose
  • C Trachea \(\rightarrow \) bronchus \(\rightarrow \) bronchiole \(\rightarrow \) alveolus \(\rightarrow \) nose
  • D Trachea \(\rightarrow \) bronchiole \(\rightarrow \) bronchus \(\rightarrow \) alveolus \(\rightarrow \) nose

Question - 7

Which of the following completes the given equation?
Glucose + Oxygen\(\rightarrow \)?

  • A Only carbon dioxide +water +energy
  • B Only carbon dioxide + water
  • C Only carbon dioxide
  • D Only water + energy

Question - 8

Which of the following take place after we exercise?

  • A Out body needs more oxygen.
  • B Our body needs to replace the energy used.
  • C Our body needs to get rid of excess carbon dioxide.
  • D All of these.

Question - 9

Gas 'P' diffuses from a capillary into an alveolus in the lungs. When is gas 'P' expelled out from the alveolus?

  • A During inhalation
  • B During exhalation
  • C During respiration
  • D During inspiration

Question - 10

Which of the above features make alveoli suitable for the exchange of gases?

  • A They form a very large surface area.
  • B They have a very thin wall.
  • C They are covered with blood capilaries.
  • D All of these