Competitive Exams: Botany MCQs (Practice-Test 17 of 104)

  1. Which one of the following statements is correct?

    1. Cyan bacteria are abundant in both fresh and salt water

    2. Some cyan bacteria have flagella and chloroplasts

    3. Gram positive bacteria have only lip polysaccharides in their cell wall

    4. Archaebacteria have walls which contain only peptidoglycan

  2. Among the following plants, the fibers of which one has least amount of cellulose?

    1. Cotton

    2. Flax

    3. Hemp

    4. Jute

  3. The egg secretes pherohormone in

    1. Chara

    2. Chlamydomonas

    3. Fucus

    4. Polysiphonia

  4. Which one of the following statements is correct?

    1. Leaves of all conifers are perennial

    2. All vascular plants have Sieve Tube Members

    3. The red and edible flesh of strawberry is the carpel tissue

    4. Chitin is formed by the polymerization of amino sugars

  5. According to histogen theory, the meristematic zone responsible for the development of pericucle is

    1. Periblem

    2. Plerome

    3. Dermatogen

    4. Calyptorogen

  6. The floral formula represents

    1. Solanum nigrum

    2. Hibiscus rosasinensis

    3. Citrus aurantum

    4. Brassicfa campestris

  7. The water cavity in the xylem of maize stem is

    1. Schizogenously formed from protoxylem

    2. Lysigenously formed from protoxylem

    3. Schizogenously formed from metaxylern

    4. Lysigneously formed from metaxylem

  8. The foral diagram given below represents

    1. Liliaceae (Allium cepa)

    2. Lamiaceae (Labiatae) (Ocimum basilicum)

    3. Euphorbiaceae (Phyllanthus niruri)

    4. Amaryllidaceae (Crinum asiaticum)

  9. Consider the following statements:

    1. Epidermis and cortex of monocot root are similar to those of dicot root.

    2. Hypodermis of dicot stem consists of sclerenchymatous cells.

    3. The cells of bundle sheath in maize leaf serve as temporary storage cells.

    4. The dicot leaf is hypostomatic.

    Which of these statements are correct?

    1. 1 and 2

    2. 2, 3 and 4

    3. 1, 3 and 4

    4. 1, 2, 3 and 4

  10. Which one of the following statements regarding bryophytes is not correct?

    1. All mosses arc oogamous

    2. Liverworts are heterosporus

    3. Hornwort chloroplasts have pyramids

    4. Hornworts from symbiosis with

    Nostoc

  11. A nitrogen fixing prokaryote showing symbiotic Asuncion with Azolla belongs to the genus

    1. Anabaena

    2. Azotobacter

    3. Nostoc

    4. Rhizobium

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

    List-I (Plants) List-II (Type)
    1. Acanthus

    2. Capparis

    3. Dendrobiunm

    4. Monotropa

    1. Xerophyte

    2. Saprophyte

    3. Halophyte

    4. Epiphyte

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

    List-I (Substance) List-II (Plant part as source)
    1. Cocaine

    2. Proserpine

    3. Ephedrine

    4. Quinine

    1. Bark

    2. Leaf

    3. Root

    4. Stem and leaf

    • A
    • B
    • C
    • D
      • 1
      • 3
      • 4
      • 2
      • 2
      • 4
      • 3
      • 1
      • 1
      • 4
      • 3
      • 2
      • 2
      • 3
      • 4
      • 1
  14. The glyoxysomes in a plant cell

    1. Detoxify the hydrogen peroxide produced in the cell

    2. Store the waste products released in the carbohydrate metabolism

    3. Break down the fatty acids during the respiration of lipid

    4. Convert glycol ate into glycine

  15. Which one of the following tissues is concerned primarily with conduction of nutrients in a moss capsule?

    1. Hypophysis

    2. Elaters

    3. Capsule wall

    4. Columella