The pyruvic acid formed during glycolysis is oxidized to CO2 and H2O in a cycle called :
(A) Calvin cycle
(B) Nitrogen cycle
(C) Hill reaction
(D) Krebs cycle
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Respiratory Quotient (RQ) is one in case of :
(A) Fatty acids
(B) Nucleic acids
(C) Carbohydrates
(D) Organic acids
Answer:
An example of free living nitrogen fixing aerobic bacteria is :
(A) Clostridium
(B) Rhizobium
(C) Azotobacter
(D) Rhodospirillum
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Identify the plant belonging to the ReedSwamp stage in hydrarch succession :
(A) Juncus
(B) Sagittaria
(C) Salix
(D) Trapa
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A gas produced by paddy fields and connected with global warming is :
(A) CO2
(B) Chlorine
(C) H2S
(D) Methane
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If the strong partner is benefited and the weak partner is damaged, it is known as :
(A) Predation
(B) Allelopathy
(C) Symbiosis
(D) Commensalism
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Acid rain is mainly caused due to increase in the levels of the gas(es) :
(A) SO2 only
(B) CO2 only
(C) SO2, CO2
(D) NO2 and SO2
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The flow of energy among various trophic levels of an ecosystem is :
(A) Unidirectional
(B) Bidirectional
(C) Multidirectional
(D) Circular
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Increase in atmospheric temperature due to CO2 is called :
(A) Pasteur effect
(B) Greenhouse effect
(C) Blackman effect
(D) Emerson effect
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The protective ozone layer is present in :
(A) Ionosphere
(B) Stratosphere
(C) Troposphere
(D) Lithosphere
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