Competitive Exams: Botany MCQs (Practice-Test 18 of 104)

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

    List-I (Plants) List-II (Families)
    1. Psidium guava

    2. Corchorus capsularis

    3. Coriandrum sativum

    4. Nerium indicum

    1. Apiaceae (Umbelliferae)

    2. Apocynaceae

    3. Myrtaceae

    4. Tiliaceae

    • A
    • B
    • C
    • D
      • 3
      • 4
      • 1
      • 2
      • 1
      • 2
      • 3
      • 4
      • 1
      • 4
      • 3
      • 2
      • 3
      • 2
      • 1
      • 4
  2. Match List I with List II and select the correct answer:

    List-I (Enzymes) List-II (Conversions)
    1. Phosphogluco isomerase

    2. Triose phosphate isomerase

    3. Fructose diphosphate aldolase

    4. Hexokinase

    1. Fructose → Glucose

    2. Glucose → Glucose-6-Phosphate

    3. Glucose-6-phosphate → Fructose-6-phosphate

    4. Glyceraldehydes-3-phosphat → Dihydroxy acetone phosphate

    5. Fructose-1, 6-diphosphate → Glyceraldehydes-3-phosphate

    • A
    • B
    • C
    • D
      • 5
      • 4
      • 1
      • 2
      • 3
      • 4
      • 5
      • 2
      • 5
      • 2
      • 1
      • 4
      • 3
      • 2
      • 5
      • 4
  3. With reference to the water relations of plants, consider the following statements:

    1. The mechanical work done by a chemical system during any change at constant temperature is equal to the decrease in its free energy

    2. In the case of inhibition, as water continues to move into the imbibing, the water potential of the water in the imbibing becomes less negative

    3. Osmotic pressure is directly proportional to the number of solute molecules per solvent

    Which of these statements are correct?

    1. 1 and 2

    2. 2 and 3

    3. 1 and 3

    4. 1, 2 and 3

  4. Match List I (Plant by-products) with List II (Examples of compounds) and select the correct answer

    List-I List-II
    1. Alkaloid

    2. Flavonoid

    3. Terpenoid

    4. Vitamin

    1. Anthocyanin

    2. Natural rubber

    3. Folic acid

    4. Ephedrin

    • A
    • B
    • C
    • D
      • 4
      • 1
      • 2
      • 3
      • 3
      • 2
      • 1
      • 4
      • 4
      • 2
      • 1
      • 3
      • 3
      • 1
      • 2
      • 4
  5. Which one of the following statements is not correct?

    1. The seeds of some gymnosperms have no endosperm

    2. Air-current is the only pollinating, agent in gymnosperms

    3. In the lower gymnosperms, the, male gametes are in the nature of ciliated spermatids

    4. Some gymnospemis have both tracheids and vessels in their xylem

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

    List-I (Spice/Condiment) List-II (Family of the plant)
    1. Asafoetida

    2. Cinnamon

    3. Saffron

    4. Turmeric

    1. lridaceae

    2. Lauraceae

    3. Umbellifeme

    4. Zingiberaceae

    • A
    • B
    • C
    • D
      • 2
      • 3
      • 4
      • 1
      • 3
      • 2
      • 1
      • 4
      • 2
      • 3
      • 1
      • 4
      • 3
      • 2
      • 4
      • 1
  7. Among the following which one is the richest source of Vitamin C?

    1. Citrullus vulgaris

    2. Lycopersicum esculentum

    3. Phyllanthus emblica

    4. Pyrus malus

  8. Consider the following statements:

    1. Acetaldehyde is an electron acceptor during respiration

    2. In Citric Acid Cycle, pyruvate is transported from cytosol to mitochondrial matrix

    3. The Pentose Phosphate Pathway occurs in cytosol

    Which of these statements are correct?

    1. 1, 2 and 3

    2. 1 and 2

    3. 2 and 3

    4. 1 and 3

  9. Union between a large non-motile female gamete and a small motile male gamete is called

    1. Anisogamy

    2. Isogamy

    3. Oogamy

    4. Zoogamy

  10. Consider the following classes of Fungi:

    1. Ascomycetes

    2. Basidiomycetes

    3. Deuteromycetes

    4. Zygomycetes

    The fungal elements of which of these classes are involved in forming lichens?

    1. 1 and 2

    2. 2 and 3

    3. 1 and 4

    4. 3 and 4

  11. Consider the following families:

    1. Amaranthaceae

    2. Cyperaceae

    3. Euphorbiaceae

    4. Nyctaginaceae

    Which of these families have plants with

    C4 metabolism of photosynthesis?

    1. 1 and 3

    2. 1, 2 and 4

    3. 2, 3 and 4

    4. 1, 2, 3 and 4

  12. Protein synthesis in bacteria stops when an antibiotic, puromycin, is added because

    1. Puromycin resembles tyrosyl-t RNA

    2. It binds at A binding site and terminates the polypeplide chain

    3. It binds to peptide with the C-terminus of growing polypeptide resulting in termination of polypeptide chain

    4. Its peptidyl end resembles the tyrosyl-t

    RNA and helps binding of the amino acid tyrosine

  13. Match List I (Haploid number of chromosomes) with List II (Name of the plant) and select the correct answer:

    List-I List-II
    1. Haploid number 6

    2. Haploid number 8

    3. Haploid number 12

    4. Haploid number 24

    1. Allium cepa

    2. Oriza sativa

    3. Solanum tuberosum

    4. Vicia faba

    • A
    • B
    • C
    • D
      • 4
      • 2
      • 1
      • 3
      • 3
      • 2
      • 1
      • 4
      • 4
      • 1
      • 2
      • 3
      • 3
      • 1
      • 2
      • 4
  14. Among the following substances, which one has the highest Respiratory Quotient?

    1. Glucose

    2. Malic acid

    3. Oxalic acid

    4. Palmitic acid

  15. During day time, CAM (Crassulacean acid metabolizing): Plants procure CO2 for photosynthesis from

    1. Pyruvic acid

    2. Oxaloacetic acid

    3. Oxalic acid

    4. Malic acid