Competitive Exams: Botany MCQs (Practice-Test 34 of 104)

  1. Which one of the following hydrophytes has its roots fixed in mud and leaves floating on water?

    1. Ceratophyllum

    2. Najas

    3. Trapa

    4. Utricularia

  2. Consider the following:

    1. Insulin

    2. Human Groth hormone

    3. Interferons

    4. Hepatitis-B surface antigen

    Which of the above of/are generated from genetically engineered microbes?

    1. 1 only

    2. 1, 2 and 3 only

    3. 3 and 4 only

    4. 1, 2, 3 and 4

  3. Match List I (Scientist) with List II (Concept/Law/Principle) and select the correct answer using the codes given below the lists:

    List-I (Scientist) List-II (Concept/Law/Principle)
    1. Hardin

    2. Liebig

    3. Shelford

    4. Whittaker

    1. Competitive exclusion principle

    2. Law of tolerance

    3. Low of Minimum

    4. Concept of venegational continuum

    • A
    • B
    • C
    • D
      • 1
      • 2
      • 3
      • 4
      • 1
      • 3
      • 2
      • 4
      • 4
      • 2
      • 3
      • 1
      • 4
      • 3
      • 2
      • 1
  4. To impart viral resistance, plants can be genetically modified with which one of the following genes?

    1. Cry

    2. Chitinase

    3. Lectin

    4. Viral coat protein

  5. Which one of the following enzymes is added in many detergents that help to remove pertinacious stains from clothes?

    1. Alcalase

    2. Xylanase

    3. Peroxidase

    4. Catalase

  6. Consider the following statement: Biosensors are used in:

    1. In vitro diagnostics

    2. Detection of microbial contaminants in food.

    3. Monitoring pollutants in the biotic component of environment.

    Which of the statements given above is/are correct?

    1. 1 and 2 only

    2. 2 only

    3. 1 and 3 only

    4. 1, 2 and 3

  7. Which one of the following is the method of gene transfer based on the use of short electrical impulses of high field strength?

    1. Ultrasoniatioin

    2. Electroporation

    3. Microprojectile

    4. Macro injection

  8. Consider the following statements:

    1. Plants developed through suspension cultures generally exhibit genetic variations.

    2. Plants regenerated via organo-genesis from callus cultures generally do not exhibit genetic variations.

    Which of the statements given above is/are correct?

    1. 1 only

    2. 2 only

    3. Both 1 and 2

    4. Neither 1 nor 2

  9. Shot gun technique is employed in:

    1. Stitching of the gene

    2. Isolation of the gene

    3. Sequencing of DNA

    4. Insertion of genomic clones into a vector

  10. Consider the following statements:

    1. Polyhydroxybutyrates are produced by bacterial fermentation.

    2. Polyhydroxybutyrates can be used as biodegradable plastics.

    3. Transgenic trees are used in producing polyhydroxybutyrates.

    Which of the statements given above is/are correct?

    1. 1 only

    2. 1 and 2 only

    3. 2 and 3 only

    4. 1, 2 and 3

  11. Cell cultures of Lithospermum erythrorhizon are being used commercially for preparing

    1. Berberine

    2. Plamitine

    3. Shikonin

    4. Plumagin

  12. Which one of the following dyes is used in testing the viability of protoplasts?

    1. Evans blue

    2. Trypan blue

    3. Fluroscenia diacetate

    4. Phenisofranin

  13. Consider the following plants:

    1. Darlingtonia

    2. Dionaea

    3. Sarracenia

    Which of the above plants is/are carnivorous?

    1. 1 only

    2. 1 and 2 only

    3. 2 and 3 only

    4. 1, 2 and 3

  14. Which one of the following is a nonsucculent perennial xerophyte?

    1. Argemone mexicana

    2. Calotripis procera

    3. Cassia tora

    4. Solanum Xanthocarpum

  15. Consider the following statements:

    1. In Eichhornia, petioles become spongy and swollen.

    2. Ranunculus shows heterophylly.

    3. Roots are entirely absent in Salvinia.

    Which of the statements given above is/are correct?

    1. 1 only

    2. 1 and 2 only

    3. 2 and 3 only

    4. 1, 2 and 3