Multiple Choice Questions

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Pebrine in silkworms is caused by

  • Dugesia

  • Monocystis

  • Nosema

  • Plasmodium


C.

Nosema

Pebrine or pepper disease is caused by protozoan Nosema bombycis. The parasite infects eggs and is therefore, transmitted to next generation. It kills caterpillars.


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Select the option having all correctly matched pairs.
A. Alkaloids (i) Carotenoid; Anthocyanin
B. Pigments (ii) Vinblastin; curcumin
C. Drugs (iii) Morphine; Codeine

  • A-i; B-ii;C-iii

  • A-ii; B-iii; C-i

  • A-iii; B-i; C-ii

  • A-i; B-iii; C-ii


Dust, oolong and brick are varieties of

  • coffee

  • pepper

  • tea

  • lavang


Select the correct statement.

  • Particulate matter of size 10 um can create severe damage to the lungs.

  • Particulate matter of size greater than 2.5 µm can get trapped in lungs and cause problems.

  • Particulate matter of size less than 2.5 µm penetrate deep into lungs.

  • None of the above.


In a normal adult, ascending order of concentration of following molecules is

  • K>Na>Fe>Cu

  • Na>K>Cu>Fe

  • Fe> Na> K > Cu

  • Na> Fe> K > Cu


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Ventricular diastole occurs due to a/an

  • organ system

  • cell organelle

  • tissue

  • organ


What is common between earthworm and Periplaneta

  • Both have red coloured blood

  • Both possess anal styles

  • Both have malpighian tubules

  • Both have segmented body


Which of the following is a homopolysaccharide

  • Heparin

  • Inulin

  • Pectin

  • Hyaluronic acid


Plants having the above given floral diagram are

  • leguminous

  • dicots

  • medicinal and perennial

  • having pinnately compound leaves


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Which of the following statements is incorrect about G0 phase

  • Mitosis occurs after G0 phase.

  • Biocatalysts can be used to exit G0 phase.

  • Cell volume keeps on increasing during this phase.

  • Cell metabolism occurs continuously in G0 phase.