Competitive Exams: Botany MCQs (Practice-Test 85 of 104)

  1. A tracheid is distinguished from a vessel elements on the basic of

    1. Length

    2. Thickness

    3. Side-wall pitting

    4. End-wall perforation

  2. Vessels and companion cells are the characteristic features of

    1. Gymnosperms

    2. Angiosperms

    3. Pteriodophytes

    4. Fungi

  3. Bars of Sanio are the

    1. Unthinking cellulose walls between bordered pits of pine wood

    2. Thickened boundaries between bordered pits of pine wood

    3. Rings around the tours of all gymnosperm wood

    4. Modularly ray cells with bar-like orientation in Ephedra

  4. Jute fibers are part of

    1. Xylem

    2. Phloem

    3. Epidermis

    4. Cortex

  5. Consider the following parts of a flower:

    1. Androecium

    2. Gynoecium

    3. Petal

    4. Sepal

    The correct sequence in which these parts develop in an acropetalous manner is

    1. 3, 4, 1, 2

    2. 4, 3, 1, 2

    3. 3, 4, 2, 1

    4. 4, 3, 2, 1

  6. Lectotype s based on

    1. Isotope

    2. Icon type

    3. Neotype

    4. Paratype

  7. The ‘Bird of paradise’ belong to which one of the following genera?

    1. Butea

    2. Sterlitzia

    3. Nymphea

    4. Muse

  8. The above figures belongs to

    1. Pentoxyleae

    2. Bennettitales

    3. Cordials

    4. Glossoptericlales

  9. The phenomenon of polyembryony is common feature

    1. Pinus

    2. Cycas

    3. Ephedra

    4. Ginkgo

  10. Petrifaction is a process of

    1. Decomposition

    2. Food preservation

    3. Food preservation

    4. Emission of foul smell

  11. Neurospora is a very good taxon for

    1. Biofertilizer

    2. Biological control

    3. Genetically studies

    4. Antibiotics

  12. Which one of the following plants species is known as a living fossil?

    1. Taxus baccata

    2. Welwitschia sp.

    3. Ephedra bifoliata

    4. Ginkgo biloba

  13. The C2 glycol ate cycle is also known as

    1. PCR

    2. PCO

    3. PPP

    4. EMP

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

    List-I List-II
    1. Photophosphorylation

    2. Phytochrome

    3. Fluorescence

    4. Quantum conversion

    1. Transformation of radiant energy into chemical form

    2. Emitting back the radiations absorbed

    3. Photoreceptor pigment of plant

    4. ATP synthesis in chloroplast

    • A
    • B
    • C
    • D
      • 4
      • 3
      • 2
      • 1
      • 3
      • 4
      • 1
      • 2
      • 4
      • 3
      • 1
      • 2
      • 3
      • 4
      • 2
      • 1
  15. In the synthesis of one mole of glucose by C3 and C4 plants, the number of moles of ATP used by C3 and C4 plants is respectively

    1. 15 and 30

    2. 10 and 20

    3. l8 and 30

    4. 15 and 20