Epidermis is specialized for :-
  • respiration

  • absorption

  • protection

  • All of these

In the blood of an adult man the total content of haemoglobin is roughly

  • several hundred grams

  • tens of gram (10-100 g)

  • several grams

  • several hundred milligram

The haemoglobin content per 100 ml of blood of a normal healthy human adult is:

  • 5 - 11 g

  • 25 - 30 g

  • 17 - 20 g

  • 12 - 16 g

Assertion             :       Coughing and sneezing are necessary.

Reason                :      Coughing and sneezing are reflex actions.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

How many of the following factors are favourable for the shifting  of Oxyhaemoglobin dissociation Curve to the left side

low pO2, high pCO2, more H+ Concentration, Higher temperature, High pO2, Low pCO2, less H+ Concentration, lower temperature.

  • 3

  • 4

  • 5

  • 6

______ temperature will shift the Oxyhaemoglobin dissociation Curve to _____side,

  • lower, left

  • higher, right

  • lower, right

  • Both A and B

Assertion   :       Most fish when out of water, die of suffocation.

Reason      :       Atmospheric air contains far less oxygen content than the dissolved oxygen in water.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion       :       During inspiration, pressure of air falls in the thorax.

Reason          :       There is a rise in volume of thorax during inspiration.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion      :       During inspiration, the volume of thorax increases.

Reason         :       This happens due to the relaxation of diaphragm and inspiratory muscles.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion   :    Forceful expiration occurs through expiratory muscles.

Reason      :    Expiratory muscles expires quickly.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion            :       Vital capacity is higher in athletes than non-athletes.

Reason              :       Vital capacity is about 3.5-4.5 litres in a normal adult person.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion             :       Gill-lamellae in aquatic animals help in exchange of gases

Reason                :       Each gill lamella carries many blood capillaries.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion          :      In mammals, complex respiratory system has developed.

Reason             :      Mammalian skin is impermeable to gases.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion    :       Insects develop a complex system of air tubes called trachea for respiratory purpose.

Reason       :      Exchange through body surface is not possible in insects.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion :       Abdominal muscles is related with respiration in animals.

Reason    :       Relaxation of abdominal muscles draws in air.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion             :       Aerobic respiration involves the exchange of respiratory gases twice.

Reason                :       Exchange occurs from lung to heart and then heart to lung.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion   :       Blood of insects is colourless


Reason      :      The blood of insect does not play any role in transport of oxygen.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion       :       Severe Acute Respiratory Syndrome (SARS) originated in China.

Reason          :       China is the most populated country of the world

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Choose the wrong statement

  • CO2 is the harmful molecule and released during catabolic reactions

  • respiration will always require O2

  • Breathing is a part of respiration

  • All of the above

How many of the following invertebrates exchange O2 with CO2 by simple diffusion
(Sponges, Coelenterates, flatworms, Annelida, Arthropoda, Mollusca, Pisces,)

  • 6
  • 5
  • 4
  • 3

Frogs respire through

  • Skin
  • lungs
  • buccal cavity
  • All of these

Respiratory organ of scorpion is

  • Book-lungs

  • Book-gills

  • Buccal cavity

  • Lungs

Which of the following is true

  • Gills are used by most of the aquatic animals

  • lungs are used by most of the terrestrial animals

  • Mammals have a well developed respiratory system

  • All of the above

The mechanism of breathing depends on animal’s

  • habitat
  • level of organisation
  • Both A and B
  • Body segmentation

Which of the following is incorrect

  • Whale-Lungs

  • Tadepole larva-Gills

  • Earthworm-moist skin

  • Spider-lungs

How many external nostrils are present in human beings

  • 1
  • 2
  • 3
  • None of these

Nasopharynx opens through_________ of the larynx region into the trachea.

  • glottis
  • gullet
  • epiglottis
  • All of these

Which of the following is true about epiglottis

  • thin elastic cartilaginous flap
  • prevent food entry into larynx
  • Coughing occurs due to its improper movement
  • All of these

The common passage for food and air is

  • nasal passage
  • nasopharynx
  • oropharynx
  • pharynx

Which of the following is not supported by cartilaginous rings

  • Primary bronchioles
  • tertiary bronchioles
  • tracheae
  • alveoli

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Practice Zoology Quiz Questions and Answers