Environmental Science MCQs

Question 1

Which of the following statement is incorrect regarding ecological pyramids

Accepted Answer

The pyramid of energy is inverted in ocean ecosystem

Answer

The pyramid of biomass is inverted in aquatic ecosystem

Answer

The pyramid of numbers is upright in grass land ecosystem

Answer

The pyramid of biomass is upright in grass land ecosystem

Question 2

Ecological niche of an organism represents

Accepted Answer

All of these

Answer

The resource it utilizes

Answer

Functional role in the ecological system

Answer

The range of conditions that it can tolerate

Question 3

Which of the following statements is not correct?

Accepted Answer

The relative humidity is a measure of the air's actual water vapor content.

Answer

The length of human hair changes as the relative humidity changes.

Answer

During the winter, low relative humidity can irritate the mucus membranes in the nose and throat.

Answer

A change in the air temperature can change the relative humidity.

Question 4

Without the atmospheric greenhouse effect, the average surface temperature would be:

Accepted Answer

Lower than at present

Answer

Higher than at present

Answer

The same as it is now

Answer

Much more variable than it is now

Question 5

How much radiant energy will an object emit if its temperature is at absolute zero?

Accepted Answer

Answer

The maximum theoretical amount

Answer

The same as it would at any other temperature

Answer

Depends on the chemical composition of the object

Question 6

Suppose last night was clear and calm. Tonight low clouds will be present. From this you would conclude that tonight's minimum temperature will be:

Accepted Answer

Higher than last night's minimum temperature

Answer

Lower than last night's minimum temperature

Answer

The same as last night's minimum temperature

Answer

Above freezing

Question 7

A food web is

Accepted Answer

A set of interconnected food chains, illustrating the tropic relationships among species

Answer

Like a food chain

Answer

The set of prey species that are consumed by animals in an ecosystem

Answer

The tropic (feeding) levels that can be observed in an ecosystem

Question 8

Ecology is

Accepted Answer

The study of the relationships between organisms and their environment

Answer

The science that studies the evolution of life,

Answer

Integrates both social and natural sciences to help us understand how the earth works,

Answer

The study of the environment in the absence of humans

Question 9

Which of the following is false?

Accepted Answer

The energy content in a trophic level is determined is determined by considering a few individuals of a species in that trophic level.

Answer

Quantity of biomass in a trophic level at a particular period is called as standing crop

Answer

The succession that occurs in newly cooled lava is called primary succession

Answer

Rate of succession is faster in secondary succession