Competitive Exams: Botany MCQs (Practice-Test 83 of 104)

  1. Match List I with List II and select the correct answer using the codes given below the lists:

    List-I List-II
    1. Deciduous forest tree

    2. Conifer

    3. Palm

    4. Aquatic microphyle

    1. Tectona

    2. Junipems

    3. Borassus

    4. Lemna

    • A
    • B
    • C
    • D
      • 1
      • 3
      • 4
      • 2
      • 1
      • 2
      • 3
      • 4
      • 2
      • 1
      • 3
      • 4
      • 3
      • 2
      • 1
      • 4
  2. Cryogenic storage of germ plasm is done at

    1. 4 degrees C

    2. -10 degrees C

    3. -40 degrees C

    4. -196 degrees C

  3. An endemic taxon is one

    1. Whose distribution is restricted to a small area

    2. Which is distributed widely

    3. Which is endangered

    4. Which is economically important

  4. A list of endangered species is given in

    1. Bluebook

    2. Treatise in Biology

    3. Red Data Book

    4. Proceedings of UNESCO

  5. Which one of the following tropic levels in the food chain has the maximum energy?

    1. Herbivores

    2. Carnivores

    3. Producers

    4. Decomposers

  6. Which one of the following human activities would cause least damage to the ecosystem?

    1. Organic farming

    2. Shifting agriculture

    3. Urban expansion

    4. Cultivation of genetically engineered plants

  7. The terms reselection and k selection are used in

    1. Succession

    2. A forestation

    3. Silviculture

    4. Pollution

  8. VAM stands for

    1. Vesicular arbuscular myconhizae

    2. Vascular abrus mycelium

    3. Vascular antibody monitor

    4. Vesicular axial meiosis

  9. Synthetic seeds are produced by

    1. Encapsulating somatic embryos

    2. Encapsulating zygotic embryos in artificial nutrient jelly

    3. Encapsulating genetically engineered embryos

    4. Transplanting zygotic embryos of one plant in the endosperm of a related plant

  10. Mycorrhiza promotes plant growth by

    1. Helping the plant in utilizing atmospheric nitrogen

    2. Protecting the plant from infection

    3. Absorbing inorganic ions from the soil

    4. Serving as plant growth regulator

  11. Insect-resistant transgenic cotton has been produced by inserting a piece of DNA from

    1. An insect

    2. A bacterium

    3. A wild relative of cotton

    4. A virus

  12. Large amounts of a single now be synthesized by using

    1. Gene technology

    2. Tissue culture technology

    3. Hybridism technology

    4. Transgenic technology

  13. Which one of the following techniques is used for identifying a DNA sequence that binds to a particular protein and is based on the idea that the phosphodiester bonds in the region covered by the protein are protected from digestion by deoxyribonucleic?

    1. Finger printing

    2. Foot printing

    3. R A P D

    4. FISH

  14. Transgenic plants are produced by introducing new genes by using

    1. Mutation technique

    2. Crossing over

    3. Radiation

    4. Gene gun

  15. Match List I with List II and select the correct answer using the codes given below the lists:

    List-I List-II
    1. Laminar flow

    2. Genetic Engineering

    3. PEG

    4. Cryoprservation

    1. Frozen state

    2. Tissue culture

    3. Protoplast fusion

    4. DNA

    • A
    • B
    • C
    • D
      • 2
      • 4
      • 3
      • 1
      • 1
      • 3
      • 2
      • 4
      • 2
      • 3
      • 4
      • 1
      • 1
      • 4
      • 2
      • 3