Competitive Exams: Botany MCQs (Practice-Test 5 of 104)

    • Assertion (A): Auxins are found in large amounts in apical meristem of shoot.
    • Reason (R): The shoot is exposed to sunlight.
    1. Both A and R are true and R is the correct explanation of A

    2. Both A and R are true but R is NOT the correct explanation of A

    3. A is true but R is false

    4. A is false but R is true

  1. Stromatolites in the rocks are good indicators of

    1. Cyanobacteria

    2. Chlorophyceae

    3. Prion

    4. Lichen

  2. Cacti and Euphorbia are not easily distinguished because they grow under similar conditions of xenomorphic environment and show identical morphological adaptations. Such a type of parallel evolution is referred to as

    1. Divergent evolution

    2. Convergent evolution

    3. Retrogressive evolution

    4. Progressive evolution

  3. Given below are the processes of speciation:

    1. Reproductive isolation

    2. Geographical isolation

    3. Homogenous population

    The correct sequence of these processes of speciation is

    1. 2, 3, 1

    2. 2, 1, 3

    3. 3, 1, 2

    4. 3, 2, 1

  4. Branched hair-like sclereids are called

    1. Trichosclereids

    2. Fibriforrm sclereids

    3. Brachysclereids

    4. Polymorphic selereids

  5. Wood with vessels of equal diameters uniformly distributed through a growth ring is referred to as

    1. Diffuse porous wood

    2. Ring porous wood

    3. Storied wood

    4. No storied wood

  6. Match List I (Types of tissues) with List II (Examples of plants) and select the correct answer:

    List-I List-II
    1. Multiple epidermis

    2. Bulliform cells

    3. Articulated laticifers

    4. Biocallateral vascular bundles

    1. Oryza sp.

    2. Ficus sp.

    3. Cucurbita sp.

    4. Carica sp.

    • A
    • B
    • C
    • D
      • 4
      • 1
      • 2
      • 3
      • 4
      • 1
      • 3
      • 2
      • 2
      • 4
      • 3
      • 1
      • 2
      • 1
      • 4
      • 3
  7. According to the concept of waiting meristem, the active region of shoot apex is

    1. Anneau initial

    2. Meristeme medullaire

    3. Promeristeme sporogene

    4. Promeristeme receptaculaire

  8. The genus Trapa has been excluded from the family Onagraceae and is given the status of a family on the basis of data obtained from

    1. Anatomy

    2. Embryology

    3. Palynotogys

    4. Cytology

  9. Which one of the following is NOT permissible according to the rules of botanical nomenclature?

    1. Synonym

    2. Tautonym

    3. Autonym

    4. Basionym

  10. Which one of the following is the most effect tool in species delimitation within the species complex?

    1. Cytogenesis

    2. Photochemistry

    3. RNA characterization

    4. DNA finger printing

  11. Which one of the following ranuculaceous genera was raised to the level of a family on the basis of serological and embryological characters?

    1. Eranthis

    2. Adonis

    3. Paeonia

    4. Caltha

  12. Match List I with List II and select the correct answer:

    List-I List-II
    1. Fairy rings

    2. Symbiosis

    3. Salmon disease

    4. Water blooms

    1. Chlamydomonas

    2. Saprolegnia

    3. Agaricus

    4. Cyanobacteria

    • A
    • B
    • C
    • D
      • 1
      • 2
      • 3
      • 4
      • 4
      • 3
      • 2
      • 1
      • 3
      • 2
      • 1
      • 4
      • 3
      • 1
      • 2
      • 4
  13. Consider the following pairs:

      • Sporogonium opening irregularly
      • Marchantia
      • Sporogonium splitting down into two halves
      • Scapania
      • Sporogonium with a bulbous foot
      • Anthoceros
      • Sporogonium without a long stalk-like seta
      • Sphagnum

    Which of the above pairs are correctly matched?

    1. 1, 2, 3 and 4

    2. 1, 2 and 4

    3. 1, 3 and 4

    4. 2 and 3

  14. The additional spermatozoids in Micrococcus are produced due to mitosis in

    1. Tube cell

    2. Sperms

    3. Stalk cell

    4. Body cell