Gause's principle of competitive exclusion
states that :
(1) More abundant species will exclude the less
abundant species through competition.
(2) Competition for the same resources excludes
species having different food preferences.
(3) No two species can occupy the same niche
indefinitely for the same limiting resources.
(4) Larger organisms exclude smaller ones through
competition.

Name the chronic respiratory disorder caused
mainly by cigarette smoking :-
(1) Emphysema
(2) Asthma
(3) Respiratory acidosis
(4) Respiratory alkalosis

A typical fat molecule is made up of :-
(1) Three glycerol molecules and one fatty acid
molecule
(2) One glycerol and three fatty acid molecules
(3) One glycerol and one fatty acid molecule
(4) Three glycerol and three fatty acid molecules

Colostrum the yellowish fluid, secreted by
mother during the initial days of lactation is
very essential to impart immunity to the new
born infants because it contains
(1) Natural killer cells
(2) Monocytes
(3) Macrophages
(4) Immunoglobulin A

Due to increasing air-borne allergens and
pollutants, many people in urban areas are
suffering from respiratory disorder causing
wheezing due to
(1) benign growth on mucous lining of nasal cavity
(2) inflammation of bronchi and bronchioles
(3) proliferation of fibrous tissues and
damage of the alveolar walls
(4) reduction in the secretion of surfactants
by pneumocytes.