Environmental Science and Ecology GK online MCQ practice set

Q41. The pyramid of numbers in a single tree is

A. upright
B. inverted
C. spindle shaped
D. none of these

Q42. A graphic representation of number of individuals of different species belonging to each trophic level in a an ecosystem is known as

A. ecological pyramid
B. pyramid of biomass
C. pyramid of number
D. pyramid of energy

Q43. The pyramid of biomass is inverted in

A. forest ecosystem
B. grassland ecosystem
C. fresh water ecosystem
D. tundra

Q44. In pond ecosystem, the pyramid of biomass is

A. upright
B. inverted
C. spindle shaped
D. none of these

Q45. In grassland ecosystem, the pyramid of biomass is

A. upright
B. inverted
C. spindle shaped
D. none of these

Q46. Which of the following statement is incorrect regarding ecological pyramids

A. The pyramid of energy is inverted in ocean ecosystem
B. The pyramid of biomass is inverted in aquatic ecosystem
C. The pyramid of numbers is upright in grass land ecosystem
D. The pyramid of biomass is upright in grass land ecosystem

Q47. Organisms having the potential for interbreeding and producing fertile off spring is called

A. Class
B. Order
C. Genus
D. Species

Q48. A group of individuals of a plant or animal species, inhabiting agiven area is called

A. Biome
B. Population
C. Ecosystem
D. Community

Q49. Climate includes

A. Seasonal variation
B. General patterns of atmosphere conditions
C. Average weather of an area
D. All of these

Q50. The maintenance of relatively constant internal environment is called

A. Homeostasis
B. Exotherms
C. Homeobox
D. Endotherms

Q51. Ultraviolet radiation which is not lethal but harm to the organism is

A. 0.1 to 0.28 mu m
B. 0.28-0.32 mu m
C. 0.32-0.4 mu m
D. 0.4-0.5 mu m

Q52. Ecological niche of an organism represents

A. The resource it utilizes
B. Functional role in the ecological system
C. The range of conditions that it can tolerate
D. all of these

Q53. Respiratory roots are known as

A. velamen
B. pneumatophores
C. hydathodes
D. prop roots

Q54. The gradual physiological adjustment to slowly changing new environmental conditions is known as

A. Selection
B. Introduction
C. Acclimatization
D. Quarantine

Q55. Upper layer of water in a single body of water is known as

A. Hypolimnion
B. Epilimnion
C. thermocline
D. Hydroline

Q56. The lower limit of water availability is soil is known as

A. field capacity
B. Hypolimnion
C. thermocline
D. wilting point

Q57. MAB program stands for

A. Man and biotechnology
B. Material and biology
C. Man and Biology
D. Man and Biosphere

Q58. Red data book contains data of

A. all plant species
B. all animal species
C. economically important species
D. threatened species

Q59. IUCN (The International Union For Conservation Of Nature And Natural Resources) headquarters is at

A. Morges, Switzerland
B. Paris, France
C. Vienna, Austria
D. NewYork, USA

Q60. IUCN is also called as

A. Man and Biosphere program
B. World Conservation Union
C. World Conservation Consortium
D. World Wide Conservation Union