Multiple Choice Questions

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Periderm includes

  • cork cambium only

  • cork cambium and cork

  • cork and secondary cortex

  • cork cambium, cork and secondary cortex


D.

cork cambium, cork and secondary cortex

Periderm formation occurs in the root and stems of dicots and gymnosperm in extra stelar region with the help of cork cambium. Periderm is external secondary protective tissue and compreses of cork, cork cambium and secondary cortex.


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Yeast belongs to which class

  • Basidiomycetes

  • Eumycetes

  • Ascomycetes

  • None of these


Glycolysis occurs in

  • cytosol

  • mitochondria

  • Golgi complex

  • ribosomes


'Reindeer moss' is common name for

  • Funaria hygrometrica

  • Marchantia sp

  • Cladonia rangifera

  • Polytrichum sp


The terminal electron acceptor during electron transport system is

  • oxygen

  • cyto a3

  • cyto c

  • plasto quinone


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Algal zone is present in

  • normal root of Cycas

  • coralloid root of Cycas

  • normal root of Pinus

  • stem of Cycas


The magnitude of root pressure ranges from

  • 2-5 atm

  • 0.1-0.2 atm

  • 1-5 atm

  • 4-6 atm


The Orobanche plant is

  • partial stem parasite

  • total root parasite

  • symbiont

  • total stem parasite


In Spirogyra sometimes a ladder like structure  is present due to

  • vegetative reproduction

  • asexual reproduction

  • lateral conjugation

  • scalariform conjugation


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Which of the following element plays an important role in nitrogen fixation

  • Zinc

  • Molybdenum

  • Manganese

  • Copper