Multiple Choice Questions

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'Organ of Jacobson' helps in

  • touch

  • vision

  • smell

  • hear


C.

smell

Jacobson's organ, also called vomeronasal organ, an organ of chemoreception is a part of the olfactory system of amphibians, reptiles, and mammals, although it does not occur in all tetrapod groups. It was discovered by Frederick Ruysch and later by Ludwig Jacobson mis 1813.


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In which type of reactions related to plant photosynthesis peroxisomes are involved?

  • Glycolate cycle

  • Calvin cycle

  • Bacterial photosynthesis

  • Glyoxylate cycle


'Water vascular' system is found in

  • sea-anemone

  • sea-pen

  • sea-cucumber

  • sea-horse


Lichens are described as indicator of

  • air pollution

  • water pollution

  • soil pollution

  • agriculture productivity


Most abundant mineral of animal body is

  • iron (Fe)

  • sodium (Na)

  • potassium (K)

  • calcium (Ca)


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Retrogressive metamorphosis occurs in

  • Hemichordata

  • Cephalochordata

  • Urochordata

  • Vertebrata


Cysticercus stage is formed in

  • Taenia

  • Plasmodium

  • Leishmania

  • Wuchereria


The hormone responsible for 'Fight and Flight' response is

  • adrenalin

  • thyroxin

  • ADH

  • oxytocin


Which of the following is a catadromous fish?

  • Hilsa sp.

  • Mystus sp.

  • Anguilla sp.

  • Channa sp.


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Which of the following animal belongs to class-Crustacea?

  • Cockroach

  • Cyclops

  • Grasshopper

  • Mosquito