Environmental Issues Set 6

All India Pre Medical Test (AIPMT)

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This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Environmental Issues Set 6

Q1 | For the given statement which option is correct?_ans_key_Statement_ans_key_(X)Organic farming means agriculture with the help of chemicals._ans_key_(Y)500 members of Haryana Kissan welfare club have adopted this agricultural practice.
  • Both X and Y are correct.Y gives correct explanation for X
  • Both X and Y are correct.Y does not give correct explanation for X
  • X is correct, Y is wrong
  • X is wrong and Y is correct
Answer: X is wrong and Y is correct
Q2 | For the given statement which option is correct?_ans_key_Statement_ans_key_(X)Deforestation is one of the important factor for global warming._ans_key_(Y)Green house gas CO2 increases due to deforestation. .
  • Both X and Y are correct.Y gives correct explanation for X
  • Both X and Y are correct.Y does not give correct explanation for X
  • X is correct, Y is wrong
  • X is wrong and Y is correct
Answer: Both X and Y are correct.Y gives correct explanation for X
Q3 | How many molecules of ozone canbe decomposed by one atom of chlorine?
  • 100
  • 2.00.000
  • 1.00.000
  • 1000
Answer: 1.00.000
Q4 | Which gas is responsible for increase in atmosphere temperature?
  • O 2
  • CO2
  • SO2
  • CO
Answer: CO2
Q5 | Slash and burn agriculture means..
  • Agriculture on desert land
  • Jhum cultivation
  • Cultivation on hills
  • Reforestation.
Answer: Jhum cultivation
Q6 | Which of the following is responsible for protection of living organism on earth?
  • Ozone layer
  • Green house strategy
  • Troposphere
  • Uvrays
Answer: Ozone layer
Q7 | With respect to value of BOD, arrange the following in descending order._ans_key_i) Distilled water ii) Tap water_ans_key_iii)Industrial effluent iv)Sewage discharge in the river
  • i– ii – iii - iv
  • iii –iv – ii - i
  • iv –iii – ii - i
  • ii – I – iv – iii
Answer: iii –iv – ii - i
Q8 | Domestic sewage with -------% impurities is unfit for human use.
  • 0.20%
  • 0.01%
  • 0.10%
  • 0.02%
Answer: 0.10%
Q9 | Green house Effect is the cumulative result of the influence of certain gases. Identify the gas which is not involved in the influence Karnataka2005
  • CO
  • CFC
  • N2
  • CH4
Answer: N2
Q10 | If fertilizers are added to fresh water .. AIIMS2002
  • Plants will die
  • Eutropication will occur
  • Fish population will decrease
  • Overall animal population will decrease
Answer: Eutropication will occur
Q11 | With the help of electrostatic precipitator which Air pollutant produced by cement factory is separated?
  • NO2
  • CO
  • SO2
  • SPM
Answer: SPM
Q12 | Which of the following does not occur when the sewage is discharged into the river?
  • Eutropication
  • Depletion of O2
  • Increase in O2
  • Algal bloom DPMT2003
Answer: Eutropication
Q13 | Alternative forms of a gene are called _____________.
  • loci
  • multiples
  • Chromosomes
  • Alleles
Answer: Alleles
Q14 | Heredity or inheritance of specific traits became clearer due to
  • Lamarck's theory
  • Mendel worked on garden peas
  • Darwinism
  • Neo-Darwinism
Answer: Mendel worked on garden peas
Q15 | Which of the following sentences is true about the evolutionary process?
  • There is no real 'progress' in the idea of evolution.
  • humans are unique, a totally new type of organism.
  • progress is nature's religion.
  • Evolution of life forms was rapid in the beginning ages.
Answer: There is no real 'progress' in the idea of evolution.
Q16 | Microevolution takes place due to
  • somatogenic variation
  • blastogenic variation
  • continuous variation
  • Successive variation
Answer: blastogenic variation
Q17 | The difference between Homo sapiens and the Homo erectus was ____. .
  • Homo sapiens originated in Africa while Homo erectus was in Asia
  • Homo erectus were much smaller in size than homo sapiens.
  • Homo erectus stayed in Africa while Homo sapiens did not.
  • The size of their brain of Homo eructus was smaller to homo sapiens
Answer: The size of their brain of Homo eructus was smaller to homo sapiens
Q18 | By studying analogous structures we look for ______.
  • similarities in appearance and function but different in structure.
  • similarities in appearance but differences in functions.
  • Similarities in organ structure.
  • Similarities in cell make up.
Answer: similarities in appearance and function but different in structure.
Q19 | __________ was a predecessor of Darwin and he developed the theory of acquired characteristics.
  • Weismann
  • Mendel
  • Malthus
  • Lamarck
Answer: Lamarck
Q20 | Which of these is not a living fossil?
  • Archaeopteryx
  • Duck-billed platypus
  • Lungfish
  • Frog
Answer: Archaeopteryx
Q21 | Which of the following are not the examples of analogous structures?
  • Wings of bat and butterfly.
  • Wings of bat and forelimb of cattle.
  • Thorn and spine.
  • Tendril of Lathyrus and tendril of Gloriossa.
Answer: Wings of bat and forelimb of cattle.
Q22 | The scientist who cut off the tails of mice of successive generations to prove Lamarck's theory was wrong was _____.
  • Weismann
  • Haeckel
  • Darwin
  • Wallace
Answer: Weismann
Q23 | Human being belongs to the species of_____.
  • Homo erectus
  • Homo habillis
  • Homo sapiens
  • Hominidae
Answer: Homo sapiens
Q24 | Links between organisms that show branching pattern of evolutionary relationships are shownby_____.
  • living fossils
  • comparative embryology
  • phylogenetic trees
  • two fossil layers
Answer: phylogenetic trees
Q25 | Speciation is the evolutionary process by which _____.
  • a new gene pool is formed
  • evolutionary paths of species converge
  • hybrid species formed
  • Shows up differences in physical traits
Answer: a new gene pool is formed
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