Environmental Science MCQs

Question 1

The carrying capacity of a population is determined by its

Accepted Answer

limiting resources

Answer

population growth rate

Answer

natality

Answer

mortality

Question 2

The order of succession in a lithosere or xerosere is

Accepted Answer

Crustose lichen stage->Foilose lichen stage->moss stage->herb stage>shrub stage->forest stage (climax community)

Answer

Foliose lichen stage->Crustose lichen stage->moss stage->herb stage>shrub stage->forest stage (climax community)

Answer

Moss stage ->Foilose lichen stage-> Crustose lichen stage ->herb stage->shrub stage->forest stage (climax community)

Answer

Crustose lichen stage->Foilose lichen stage->moss stage-> ->shrub stage-> herb stage->forest stage (climax community)

Question 3

Assuming that the night will remain clear, calm, and unsaturated, the predicted minimum temperature is 32oF. Suddenly the wind speed increases and remains gusty throughout the night. The minimum temperature will most likely be:

Accepted Answer

Higher than predicted due to mixing

Answer

About the same as predicted but will occur earlier in the night

Answer

Higher than predicted due to the release of latent heat

Answer

Much lower than predicted due to radiational cooling

Question 4

Energy flow in ecosystem is

Accepted Answer

Unidirectional

Answer

Bidirectional

Answer

Multidirectional

Answer

None of the above

Question 5

Salmonellosis is a disease related to consumption of

Accepted Answer

Fish

Answer

Chicken

Answer

Eggs

Answer

Mutton

Question 6

An association between two individuals or populations where both are benefitted and where neither can survive without the other is

Accepted Answer

mutualism

Answer

competition

Answer

commensalism

Answer

protocoperation

Question 7

The relationship between nitrogen fixing bacteria and leguminous plants is an example for

Accepted Answer

Mutualism

Answer

Parasitism

Answer

Predation

Answer

Commensalism

Question 8

The green house gases, otherwise called radioactively active gases includes

Accepted Answer

All of these

Answer

Carbon dioxide

Answer

CH4

Answer

N2O

Question 9

CFC releases a chemical which is harmful to ozone is

Accepted Answer

chlorine

Answer

fluorine

Answer

N2O

Answer

SO2