PMT 2009 Multiple Choice Questions (Part 8 of 10)

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  1. DDT residues are rapidly passed through food chain causing biomagnification because DDT is

    1. Lipo soluble

    2. Moderately toxic

    3. Non-toxic to aquatic animals

    4. Water soluble

    Answer: a

  2. Which one of the following is a vascular cryptogam

    1. Equisetum

    2. Ginkgo

    3. Marchantia

    4. Cedrus

    Answer: a

  3. Steps taken by the Government of India to control air pollution include

    1. Compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel

    2. Compulsory PUC (Pollution Under Control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons

    3. Permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles

    4. Use of non-polluting compressed Natural Gas (CNG) only as fuel by all buses and trucks.

    Answer: d

  4. Montreal Protocol aims at

    1. Reduction of ozone depleting substances

    2. Biodiversity conservation

    3. Control of water pollution

    4. Control of CO2 emission

    Answer: a

  5. Which one of the following acids is a derivative of carotenoids

    1. Indole butyric acid

    2. Indole-3-acetic acid

    3. Gibberellic acid

    4. Abscisic acid

    Answer: d

  6. Guard cells help in

    1. Protection against grazing

    2. Transpiration

    3. Guttation

    4. Fighting against infection

    Answer: b

  7. Palisade parenchyma is absent in leaves of

    1. Sorghum

    2. mustard

    3. Soybean

    4. Gram

    Answer: a

  8. Cotyledons and testa respectively are edible parts in

    1. Groundnut and pomegranate

    2. Walnut and tamarind

    3. French bean and cocount

    4. Cashew nut and litchi

    Answer: a

  9. Which one of the following is considered important in the development of seed habit

    1. Dependent sporophyte

    2. Heterospory

    3. Haplontic life cycle

    4. Free-living gametophyte

    Answer: b

  10. T O Diener discovered a

    1. Free infectious RNA

    2. Free infectious DNA

    3. Infectious protein

    4. Bacteriophage

    Answer: a

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