Q.1:- The ratio of forest area needed for ecological balance in India ? [SSC Graduate Level Exam 1999]
- 1%
- 2%
- 3%
- 4%
Q.2:- Reduced leaves and sunken stomata are the main feature of ?
- Epiphytes
- Hydrophytes
- Xerophytes
- Mesophytes
Q.3:- Convergent evolution is illustrated by ?
- Rat and Dog
- Bacterium and Protozoa
- Star Fish and cuttlefish
- Dog fish and whales
Q.4:- The term ecology is first given by ?
- Robert Brown
- Aristotle
- Khurana
- Reiter
Q.5:- In a food chain energy transfer ? [SSC Graduate Level Exam 2000]
- From river to earth
- Lower latitude to higher latitude
- From one organism to other organism
- None of these
Q.6:- Energy transfer from organism to organism in a natural community develops ?
- Biological Control
- Food Chain
- Food Web
- Pyramid of Energy
Q.7:- Which one of the following organisms is likely to show the highest concentration of DDT, one it has been introduce into the ecosystem ? [IAS (Pre) Exam 1997]
- Grasshopper
- Toad
- Snake
- Cattle
Q.8:- An example of false fruit is ? [SSC Exam 2011]
- Apple
- Guava
- Mango
- Tomato
Q.9:- Which of the following is most effective greenhouse gases ?
- Freon
- Methane
- Carbon Dioxide
- Chloroflurocarbon
Q.10:- DDT is ?
- Greenhouse gas
- Degradable pollutant
- Non-degradable pollutant
- None of these
Q.11:- Among pollutants which has the most lasting effect ?
- Carbon Monoxide
- Pesticides
- Sulphur Dioxide
- Smokes from Chimneys
Q.12:- Ultraviolet rays coming from Sun causes ?
- Lung Cancer
- Mouth Cancer
- Skin Cancer
- Cancer of Liver
Q.13:- Which of the following air pollutant affect the nervous system of man ?
- Lead
- Cadmium
- Mercury
- Silica
Q.14:- Cyanide poisoning causes death in seconds because ? [SSC (CGL) Exam 2015]
- It causes Lysis of red
- It denatures enzymes of the heart muscle
- It causes cardiac arrest
- It breaks the electron
Q.15:- Double Helix Model of DNA is given by ? [MPPSC (Pre) Exam 1994]
- Mullar
- Meghnath Sha
- Stephen Hawking
- Watson and Crick
Q.16:- Ozone hole is maximum over ?
- Europe
- Antarctica
- India
- Africa
Q.17:- BOD is ?
- Biological Oxygen Deficit
- Biosphere Oxygen Demand
- Biological Oxygen Demand
- None of these
Q.18:- National Environmental Engineering Research Institute is situated in ?
- Ranchi
- Cuttack
- Jamshedpur
- Nagpur
Q.19:- Waksman got the Nobel prize for the discovery of ? [SSC Exam 2015]
- Penicillin
- Streptomycin
- Neomycin
- Chloromycetin
Q.20:- Which of the following is not correctly matched ? [RRB Exam 2003]
- Joseph Lister : Treatment of Leprosy
- Joseph E. Salc : Vaccination of Polio
- Alexander Fleming : Discovered Penicillin
- Edward Jenner : Vaccination of Small Pox
Q.21:- Scientist who laid the foundation of bacteriology ?
- Leeuwenhoek
- Louis Pasteur
- William Hervey
- Edward Jenner
Q.22:- Stethoscope was invented by ?
- Jenner
- Sabin
- Laennec
- Pasteur
Q.23:- Which one of the following is the first national park established in India ? [CDS Exam 2009]
- Bandipur
- Corbett
- Velavadar
- Periyar
Q.24:- The most important strategy for the conservation of biodiversity together with traditional human life is the establishment of ? [UPSC Exam 2015]
- Biosphere Reserves
- Botanical Garden
- National Park
- Wild Life Sanctuaries
Q.25:- Which group has the highest number of endangered species ?
- Mammals
- Fishes
- Reptiles
- Birds
