4034.The pyruvic acid formed during glycolysis is oxidized to CO2 and H2O in a cycle called
Calvin cycle
Nitrogen cycle
Hill reaction
Krebs cycle
4035.Respiratory quotient (RQ) is one in case of
Fatty acids
Nucleic acids
Carbohydrates
Organic acids
4036.An example of free living nitrogen fixing aerobic bacteria is
Clostridium
Rhizobium
Azotobacter
Rhodospirillum
4037.Identify the plant belonging to the Reed-Swamp stage in hydrarch succession
Juncus
Sagittaria
Salix
Trapa
4039.If the strong partner is benefited and the weak partner is damaged, it is known as
Predation
Allelopathy
Symbiosis
Commensalism
4040.Acid rain is mainly caused due to increase in the levels of the gas(es)
SO2 only
CO2 only
SO2, CO2
NO2 and SO2
4041.The flow of energy among various trophic levels of an ecosystem is
Unidirectional
Bidirectional
Multidirectional
Circular
4042.Increase in atmospheric temperature due to CO2 is called
Pasteur effect
Green-house effect
Blackman effect
Emerson effect
4044.Decomposition of organic matter is brought about by
Protozoa
Plants
Micro-organisms
None of these
4046.Which one of the following is the first National Park in India
Kanha National Park
Periyar National Park
Corbett National Park
Bandipur National Park
4048.In Whittaker's system of classification, prokaryotes are placed in the kingdom
Protista
Monera
Plantae
Animalia
4050.This substance is present in the cell walls of Gram Positive bacteria only
Peptidoglycan
Lipopolysaccharides
Teichoic acids
None of these