The pyramid of number of a parasitic food chain in forest ecosystem is
A. always inverted
B. always upright
C. mixture of inverted and upright
D. sometimes inverted and sometimes upright
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The intensity of earthquake is measured in ____________
A. Beaufort scale
B. Richter scale
C. Mohs scale
D. Joules
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The most widely used pesticides function by disrupting
A. neurological cellular function
B. endocrine function
C. molecular events
D. renal function
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Diversity of organisms include three Domains such as
A. bacteria, archae, eukarya
B. binomial system of classification
C. monera, protista, fungi, plantae, animalia
D. membrane bound organelles, no peptidoglycan in cell walls, introns
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What do you call the rain that contains chemical waste and cause damage to plants and animals?
A. Smog
B. Acid rain
C. Monsoon rain
D. Seasonal rain
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Water heats up ______ and cools off _____ than land.
A. More quickly, more quickly
B. More quickly, more slowly
C. More slowly, more quickly
D. More slowly, more slowly
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In July, at middle latitudes in the Northern Hemisphere, the day is ____ long and is ____ with each passing day.
A. Less than 12 hours; getting longer
B. Less than 12 hours; getting shorter
C. More than 12 hours; getting longer
D. More than 12 hours; getting shorter
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The effect of interspecific competition on niches is to make them
A. larger
B. smaller
C. more triangular
D. change location
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The carrying capacity of a population is determined by its
A. population growth rate
B. natality
C. mortality
D. limiting resources
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The order of succession in a lithosere or xerosere is
A. Foliose lichen stage->Crustose lichen stage->moss stage->herb stage>shrub stage->forest stage (climax community)
B. Crustose lichen stage->Foilose lichen stage->moss stage->herb stage>shrub stage->forest stage (climax community)
C. Moss stage ->Foilose lichen stage-> Crustose lichen stage ->herb stage->shrub stage->forest stage (climax community)
D. Crustose lichen stage->Foilose lichen stage->moss stage-> ->shrub stage-> herb stage->forest stage (climax community)
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Assuming that the night will remain clear, calm, and unsaturated, the predicted minimum temperature is 32o F. Suddenly the wind speed increases and remains gusty throughout the night. The minimum temperature will most likely be:
A. About the same as predicted but will occur earlier in the night
B. Higher than predicted due to the release of latent heat
C. Much lower than predicted due to radiational cooling
D. Higher than predicted due to mixing
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Energy flow in ecosystem is
A. Unidirectional
B. Bidirectional
C. Multidirectional
D. None of the above
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Salmonellosis is a disease related to consumption of
A. Chicken
B. Eggs
C. Mutton
D. Fish
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An association between two individuals or populations where both are benefitted and where neither can survive without the other is
A. competition
B. commensalism
C. mutualism
D. protocoperation
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The relationship between nitrogen fixing bacteria and leguminous plants is an example for
A. Parasitism
B. Predation
C. Mutualism
D. Commensalism
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The green house gases, otherwise called radioactively active gases includes
A. Carbon dioxide
B. CH4
C. N2 O
D. All of these
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CFC releases a chemical which is harmful to ozone is
A. chlorine
B. fluorine
C. N2 O
D. SO2
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Birth rate is called
A. mortality
B. vital index
C. natality
D. viability
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Death rate of the population
A. Mortality
B. Viability
C. Natality
D. Vitality
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Animals and plants are best protected in
A. Zoos
B. Botanical Gardens
C. National Parks
D. Sanctuaries
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