GEOGRAPHY MCQS SET 99

GEOGRAPHY MCQS SET 99

981) With reference to food chains in ecosystems, consider the following statements
1. A food chain illustrates the order, in which a chain of organisms feed upon each other.
2. Food chains are found within the population of a species.
3. A food chain illustrates the numbers of each organism, which are eaten by others.
Which of the statements given above is/are correct?
A) Only 1
B) 1 and 2
C) l, 2 and 3
D) None of the above

Answer: Only 1
   
982) A xeric succession occurs in
A) a desert region
B) a mountainous region
C) a humid region
D) a very cold region

Answer: a desert region
   
983) An ecosystem is a/an
A) undisturbed natural area.
B) system of organisms and their environment.
C) area rich in wildlife having no humans.
D) very large area of uniform environment conditions

Answer: system of organisms and their environment.
   
984) The functioning of an ecosystem involves
A) flow of energy and circulation of nutrients.
B) an increasing simplicity of relations.
C) increasing animal populations.
D) increasing number of trees bushes etc.

Answer: flow of energy and circulation of nutrients.
   
985) The ecological pyramid that is always upright is
A) pyramid of energy
B) pyramid of biomass
C) pyramid of number
D) None of the above

Answer: pyramid of energy

986) All components and individuals in an ecosystem are
A) individualistic
B) independent
C) interdepender
D) dispensable

Answer: interdepender   
987) The biotic component of an ecosystem can be divided into functional categories on the basis of food or energy source. Each such group of organisms forms a 
A) trophic community
B) food chain
C) food web
D) species or organisms

Answer: trophic community
   
988) The following forms of relationship exist between man and his environment according to the development of geographical thought
1. Environmental determinism
2. Possibilism
3. Neo-determinism
The correct sequence of the development of these forms of relationships is
A) 2,1,3
B) 3,1,2
C) 1,3,2
D) 1,2,3

Answer: 1,2,3
   
989) What forms the first trophic level in any ecosystem?
A) Herbivores
B) Plants
C) Carnivores
D) Omnivores

Answer: Plants
   
990) The food web is
A) a very long straight linked food chain.
B) a moderate sized food chain having many trophic levels.
C) a series of food chains having frequent inter-links.
D) a circular food chain.

Answer: a series of food chains having frequent inter-links.