Environmental Science MCQs

Question 1

All the statements are correct regarding ecological succession except

Accepted Answer

It is a random process

Answer

Species diversity increases as succession proceeds

Answer

The food chain relationships becomes more complex

Answer

The role of decomposers becomes more and more important

Question 2

Valuable, practical services that help to preserve ecosystem performed by nature are called

Accepted Answer

Ecosystem service

Answer

Biological control

Answer

The green house effect

Answer

Biosphere balancing

Question 3

Our seasons are caused by:

Accepted Answer

Answer

The changing distance between the earth and the sun

Answer

The angle at which sunlight reaches the earth

Answer

The length of the daylight hours

Answer

All of the above

Question 4

If a glass of water were surrounded by saturated air:

Accepted Answer

The level of the water in the glass would not change

Answer

The level of the water in the glass would slowly decrease

Answer

The water's temperature would slowly increase

Answer

The water's temperature would slowly decrease

Question 5

In the food relationship where the lion eats the wild beast, and the wild beast eats plants

Accepted Answer

The lion is the secondary consumer and the wilde beast is the primary consumer

Answer

The lion is the prey and the wilde beast is the predator

Answer

The lion is the predator and the wilde beast is the prey

Answer

The lion is the primary consumer and the wilde beast is the secondary consumer

Question 6

Two-thirds of the world's known oil reserves are located in

Accepted Answer

The middle east

Answer

Siberia

Answer

Gulf of mexico and caribbean

Answer

Indonesia

Question 7

Suppose yesterday morning you noticed ice crystals (frost) on the grass, yet the minimum temperature reported in the newspaper was only 35o F. The most likely reason for this apparent discrepancy is that:

Accepted Answer

Temperature readings are taken in instrument shelters more than 5 feet above the ground

Answer

The thermometer was in error

Answer

The newspaper reported the wrong temperature

Answer

The thermometer was read before the minimum temperature was reached for that day

Question 8

Definition of ecosystem is

Accepted Answer

The community of organisms together with the environment in which they live

Answer

The abiotic component of a habitat

Answer

The part of the earth and its atmosphere which inhibits living organisms

Answer

A community of organisms interacting with one another

Question 9

Which of the following regarding ecological pyramids is not correct?

Accepted Answer

In most ecosystems, the pyramid of numbers and biomass are up right

Answer

In tree dominated ecosystem the pyramid of numbers is inverted

Answer

The pyramid of energy expresses mainly the rate of food production

Answer

In deep water ecosystem, the pyramid of biomass is upright