GEOGRAPHY MCQS SET 97

GEOGRAPHY MCQS SET 97

961) In the grassland, trees do not replace the grasses as a part of an ecological succession
because of
A) insects and fungi
B) limited sunlight and paucity of nutrients
C) water limits and fire
D) None of the above

Answer: water limits and fire
   
962) Consider the following statements
1. interactions between the two organisms in which one organism kills and feeds on the
second organism, is called Parasitism.
2. Mutualism is the way two organisms of different species biologically interact in a
relationship in which each individual derives a fitness benefit.
Which of the statements given above
is/are true?
A) Only 1
B) Only 2
C) Both 1 and 2
D) None of these

Answer: Only 2
   
963) Which one of the following is the correct sequence of ecosystems in the
order of decreasing productivity?
A) Oceans, lakes, grasslands, mangroves
B) Mangroves, oceans, grasslands, lakes
C) Mangroves, grasslands, lakes, oceans
D) Oceans, mangroves, lakes, grasslands

Answer: Mangroves, grasslands, lakes, oceans
   
964) Hydrological cycle is the continuous and balanced process which consists of
1. evaporation 2. precipitation
3. transpiration 4. runoff of water
5. condensation 6. infiltration
Select the correct answer using the codes given below
A) 3,4 and 6
B) 1,2,3 and 5
C) 1,2,4 and 5
D) All of the above

Answer: All of the above
   
965) Man can maintain an ecological balance in the biosphere by
A) deforestation.
B) developing new breeds of cultivated plants and domesticated animals.
C) using insecticides and pesticides.
D) understanding the delicated balance in the relative number of organisms

Answer: understanding the delicated balance in the relative number of organisms

966) In the context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing the
1. decomposer micro-organisms to the surface.
2. nutrients to the surface.
3. bottom-dwelling organisms to the surface.
Select the correct answer using the codes given below
A) 1 and 2
B) Only 2
C) 2 and 3
D) Only 3

Answer: 2 and 3
   
967) Polar bears are carnivores and prey on many arctic birds and fish. However under natural conditions, no one found polar bears predating any penguin. This is because
A) penguins have chemical substance in their muscles which is toxic to polar bears.
B) penguins are gregarious and always move in groups Therefore, a polar bear cannot approach them.
C) polar bears and penguins never coexist under natural conditions. The former lives in the North Pole while the latter lives in the South Pole.
D) polar bears and penguins display symbiotic relationships and they help each other for their existence in the ice cold ecosystem.

Answer: polar bears and penguins never coexist under natural conditions. The former lives in the North Pole while the latter lives in the South Pole.
   
968) The term 'ecology' was first used by
A) G Taylor
B) Tansley
C) Ernst Haeckel
D) Jean Brunhes

Answer: Ernst Haeckel
   
969) What is the term applied to evolution of vegetation so that it becomes increasingly adapted to its environment?
A) Organic evolution
B) Plant succession
C) Climatic climax
D) Adaptation

Answer: Plant succession
   
970) What is a complex of vegetation called when it undergoes no further change
unless the climate changes perceptibly?
A) An ecosystem
B) Climatic climax community
C) End of succession
D) Edaphic climax community

Answer: Climatic climax community