Competitive Exams: Botany MCQs (Practice-Test 26 of 104)

  1. When Acetabularia is in uninucleat condition, then it is in

    1. Vegetative phase

    2. Reproductive phase

    3. Cyst formation stage

    4. Gamete formation stage

  2. In the saprophyte of Bryales, archesporium originates from

    1. Endothecium

    2. Endothelium

    3. Amphithecium

    4. Perithecium

  3. Which one of the following algae is reported to pro duce an antibiotic?

    1. Nostoc

    2. Ectocarpus

    3. Chlamydomonas

    4. Chlorella

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

    List-I (Name of the plant) List-II (Name of stage in the life cycle)
    1. Chlamydomonas

    2. Valvax

    3. Vaucheria

    4. Batrachospermum

    1. Plakea stage

    2. Chantransia stage

    3. Palmell stage

    4. Gongrosira stage

    • A
    • B
    • C
    • D
      • 3
      • 1
      • 4
      • 2
      • 3
      • 4
      • 1
      • 2
      • 2
      • 4
      • 1
      • 3
      • 2
      • 1
      • 4
      • 3
  5. In Pinus, the haploid structures are

    1. Megaspore, endosperm and embryo

    2. Microspore, megaspore and endosperm

    3. Megaspore, integument and root

    4. Microspore, leaf and endosperm

  6. Albugo resembles Vaucheria in

    1. Mode of its nutrition

    2. Reserve food material

    3. Coenocytes thallus and development of sex organs

    4. Cell wall composition and similarity of sex organs

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

    List-I (Plants) List-II (Plant groups)
    1. Ophiologlossum

    2. Notothylas

    3. Sphagnum

    4. Rhynia

    1. Musci

    2. Filicineae

    3. Anthocerotae

    4. Psilophytineae

    5. Hepaticeae

    • A
    • B
    • C
    • D
      • 1
      • 2
      • 5
      • 3
      • 2
      • 3
      • 1
      • 4
      • 2
      • 3
      • 5
      • 4
      • 4
      • 2
      • 1
      • 3
  8. An alga in which five sterile vegetative sheaths cover the oogonium is

    1. Colochaete

    2. Fucus

    3. Chara

    4. Volvox

  9. Cones with out sporophylls are found in

    1. Lycopodium

    2. Psilotum

    3. Rhynia

    4. Equisetum

  10. Consider the following processes:

    1. O2 evolution

    2. CO2 fixation

    3. NADPH formation

    4. Chlorophyll biosynthesis

    Which of these do not occur in thylakoids?

    1. 1 and 2

    2. 2 and 3

    3. 3 and 4

    4. 2 and 4

  11. Consider the following compounds:

    1. Phosphoenol pyruvate

    2. Malic acid

    3. Pyruvic acid

    4. Oxaloacetic acid

    What is the correct sequence of these intermediate compounds as they form in

    C4-dicarboxylic acid pathway following the PEP-carboxylation reaction?

    1. 1, 2, 3, 4

    2. 2, 4, 3, 1

    3. 4, 1, 2, 3

    4. 4, 2, 3, 1

  12. Consider the following:

    1. Cytochrome b6

    2. Cytochrome II f

    3. Plastocynin

    4. Plastoquinone

    What is the correct sequence of these in the photo-induced electron carriers between PS 1 to PS 2 in photosynthesis?

    1. 4, 1, 2, 3

    2. 3, 4, 1, 2

    3. 1, 2, 3, 4

    4. 2, 3, 4, 1

  13. The total requirement of ATP and NADPH for each molecule of CO2 fixed and reduced in photosynthesis in the Clvin cycle is

    1. 2 ATP and 2 NADPH

    2. 2 ATP and 3 NADPH

    3. 3 ATP and 2 NADPH

    4. 4 ATP and 3 NADPH

  14. The number of manganese atoms in the oxygen evolving complex (OEC) in photosynthesis is

    1. 2

    2. 4

    3. 5

    4. 6

  15. C4 plants are divided into three subgroups based on

    1. Decarboxylation reactions

    2. Oxidation reactions

    3. Reduction reactions

    4. Energy reactions