Q581. Biodiversity is described as
A The range of different species in an environment B The seasonal and daily changes in an environment C The way species differ from one another D The influence of physical factors on an environment
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Correct answer: The range of different species in an environment
Q582. The destruction of biodiversity is due to
A The lack of natural habitats of organism B Environmental pollution C Destruction of forests D All of the above
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Correct answer: All of the above
Q583. The most significant aspect of biodiversity is
A Food B Drug C Industrial Use D Maintenance of ecosystem
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Correct answer: Maintenance of ecosystem
Q584. Concerning food chains in ecosystems, consider the following statements. 1. A food chain illustrates the order in which a chain of organisms feeds upon each other. 2. Food chains are found within the population of a species. 3. A food chain illustrates the number of organism, which are eaten by others. Which of the statements given above is/are correct?
A Only 1 B 1 and 2 C 1, 2 and 3 D None of the above
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Correct answer: Only 1
Q585. Which of the following are the primary consumers in an ecosystem? 1. Ants 2. Deer 3. Fox 4. Tiger Select the correct answer from the code given below. Code
A 1 and 2 B 2 and 3 C 1, 2 and 3 D 2, 3 and 4
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Correct answer: 1 and 2
Q586. Concerning the food chains in ecosystem, which of the following kinds of an organism is/are known as decomposer organism/ organisms? 1. Virus 2. Fungi 3. Bacteria Select the correct answer using the code given below.
A Only 1 B 2 and 3 C 1 and 3 D All of the above
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Correct answer: 2 and 3
Q587. Concerning ‘Eco-Sensitive Zones’, which of the following statements is/are correct? 1. Eco-Sensitive Zones are the areas that are declared under the Wildlife (Protection) Act, 1972. 2. The purpose of the declaration of Eco-Sensitive Zones is to prohibit all kinds of human activities in those zones except agriculture. Select the correct answer using the code given below.
A Only 1 B Only 2 C Both 1 and 2 D Neither 1 nor 2
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Correct answer: Neither 1 nor 2
Q588. 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. Which of the statements given above is/are correct?
A 1 and 2 B Only 2 C 2 and 3 D Only 3
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Correct answer: Only 2
Q589. Which of the following statements is true about Bionomics? 1. It means ‘management of life’. 2. It is a synonymous with ecology. 3. It stresses on the value of natural systems which influence human systems. Code
A Only 1 B 1 and 2 C 2 and 3 D 1, 2 and 3
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Correct answer: 2 and 3
Q590. Consider the following statements relating to the ecosystem. 1. The term ecosystem was first used by A.G. Tansley. 2. Those organisms which produce their food themselves are termed as autotrophs. 3. Consumers consume their food through the process of photosynthesis. 4. Decomposers convert inorganic matter into organic matter. Which of the above statements are correct? Code
A 1 and 2 B 1 and 3 C 2 and 4 D 3 and 4
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Correct answer: 1 and 2
Q591. Which one of the following is the correct order of biological organisation ranging from organism to biosphere?
A Population-Ecosystem-Community-Landscape B Landscape-Community-Ecosystem-Population C Population-Community-Ecosystem-Landscape D Population-Landscape-Community-Ecosystem
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Correct answer: Population-Community-Ecosystem-Landscape
Q592. Which one of the following is the correct sequence of the phases of biotic succession?
A Nudation, Migration, Ecesis, Reaction, Stabilization B Migration, Nudation, Ecesis, Reaction, Stabilization C Ecesis, Migration, Nudation, Reaction, Stabilization D Stabilization, Reaction, Nudation, Migration, Ecesis
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Correct answer: Nudation, Migration, Ecesis, Reaction, Stabilization
Q593. 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
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Correct answer: Water limits and fire
Q594. Which of the following shows density gradient of water system?
A Ecocline B Halocline C Pycnocline D Thermocline
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Correct answer: Pycnocline
Q595. Which one of the following is the correct sequence of a food chain?
A Diatoms-Crustaceans-Herrings B Crustaceans-Diatoms-Herrings C Diatoms-Herrings-Crustaceans D Crustaceans-Herrings-Diatoms
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Correct answer: Diatoms-Crustaceans-Herrings
Q596. The Millennium Ecosystem Assessment describes the following major categories of ecosystem services-provisioning, supporting, regulating, preserving and cultural. Which one of the following is supporting service?
A Production of food and water B Control of climate and disease C Nutrient cycling and crop pollination D Maintenance of diversity
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Correct answer: Nutrient cycling and crop pollination
Q597. The concept of ecological niche was enunciated by
A Grinnell B Darwin C E.P. Odum D C.C. Park
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Correct answer: Grinnell
Q598. Who of the following used the term ‘deep ecology’ for the first time?
A E.P. Odum B C. Raunkiaer C F.E. Clements D Arne Naess
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Correct answer: Arne Naess
Q599. The minimum area of the land required to completely sustain the life of the person is called his
A Biota B Ecological footprint C Biome D Niche
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Correct answer: Ecological footprint
Q600. The measurement unit of the ecological footprint is
A Global hectares B Nanometer C Hoppus cubic foot D Cubic ton
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Correct answer: Global hectares