Competitive Exams: Botany MCQs (Practice-Test 92 of 104)

  1. Which one of the following statements correctly fines the term hydroponics?

    1. Growing plants in soil less culture

    2. Culture of fishes by varying the water supply

    3. Growing planktons on the surface of water

    4. Growing plants in sterilized soil

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

    List-I List-II
    1. Antigibberellin

    2. Growth inhibitor

    3. Germination inhibitor

    4. IAA-oxidize inhibitor

    1. Scopoletin

    2. Caffeic acid

    3. Abcisic acid

    4. Cycocel

    • A
    • B
    • C
    • D
      • 2
      • 3
      • 1
      • 4
      • 4
      • 2
      • 3
      • 1
      • 3
      • 1
      • 4
      • 2
      • 4
      • 3
      • 1
      • 2
  3. Which one of the following classes of plant hormones is the substitute for low temperature treatment?

    1. Auxins

    2. Gibberellins

    3. Cytokine

    4. Ethylene

  4. Match List I (Type/condition of germination) with List II (Seeds of) and select the correct answer using the codes given below the lists

    List-I List-II
    1. Positively photoelectric

    2. Non-photoelectric

    3. Possible under anaerobic conditions

    4. Requires acid scarification

    1. Rice

    2. Lettuce

    3. Cucumber

    4. Leucaena

    • A
    • B
    • C
    • D
      • 2
      • 3
      • 4
      • 1
      • 2
      • 3
      • 1
      • 4
      • 3
      • 2
      • 1
      • 4
      • 3
      • 2
      • 4
      • 1
  5. Which one of the following methods requires two genetically variable individuals to produce the progeny?

    1. Cutting

    2. Layering

    3. Budding

    4. Goatee

  6. Besides lipid, pollenkitt consists mainly of

    1. Anthocyanins

    2. Carotenoids

    3. Xanthophylls

    4. Carotenoids and xanthophylls

  7. Pseudo-embryo sac s present in

    1. Cyperaceae

    2. Poaceae

    3. Podostemonaceae

    4. Solanaceae

  8. In the mature seed the persistent outer layer of nucleolus is called

    1. Perisperm

    2. Caruncle

    3. Endostome

    4. Endothelium

  9. Which of the following pairs of lectin source and the name of the lection are correctly matched?

      • Canavalia ensiformis
      • Con A
      • Abrus precatorius
      • Abrin
      • Dolichos biflorus
      • Dolin
      • Ricinus communis
      • Ricinin

    Select the correct answer using the codes given below:

    1. 1, 2 and 3

    2. 1, 3 and 4

    3. 1, 2 and 4

    4. 2, 3 and 4

  10. Ruminate endosperm occurs in the seeds of

    1. Arecaceae

    2. Poaceae

    3. Myrtaceae

    4. Euphorbiaceous

  11. The lens or strophiole is usually present in the seed (coats) of members of

    1. Fabaceae

    2. Asteraceae

    3. Malvaceae

    4. Solanaeae

  12. Which one of the following is the best method overcoming slf-incompatibility?

    1. Surgical treatment of stigma

    2. Application of growth substances and other chemicals

    3. Hot water and high temperature treatment

    4. In vitro pollination and in vitro fertilization

  13. Saprophytic incompatibility is due to chemical substances which are pertinacious in nature and are formed in the

    1. Pollen grain

    2. Exine

    3. Tapetum

    4. Stigma

  14. The movement of anthropoids towards the arch gonium (egg) due to the secretion of some chemical substance is known as

    1. Chemo taxis

    2. Chemo nasty

    3. Chemotropism

    4. Chemoreception

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

    List-I List-II
    1. Increase in wall elongation

    2. Bolting and flowering

    3. Cell division

    4. Dormancy

    1. Gibberellins

    2. Auxins

    3. Abscisic acid

    4. Cytokinins

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