Multiple Choice Questions

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In Spirogyra sometimes a ladder like structure  is present due to

  • vegetative reproduction

  • asexual reproduction

  • lateral conjugation

  • scalariform conjugation


D.

scalariform conjugation

Sexual reproduction in Spirogyra takes place by conjugation. Scalariform conjugation occurs between the cells belonging to different filaments. Hence, these species are heterothallic. Lateral conjugation is primitive than scalariform conjugation.


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In which genera endospores are formed for reproduction

  • Monococcus and Clostridium

  • Bacillus and Clostridium

  • Mucor and Bacillus

  • None ofthe above


The first phylogenetic system of plant classification was proposed by

  • Engler

  • Engler and Prantl

  • Eichler

  • Wetlstein


The part of mushroom comes out from soil is called

  • basidiocarp

  • ascogonium

  • ascocarp

  • pericarp


Blue- green algae is found in

  • Cycas

  • Pinus

  • Scales of Marchantia

  • Riccia


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Black rust of wheat is a fungal disease caused by

  • Melampsora lini

  • Claviceps Purpurea

  • Albugo candida

  • Puccinia graemzinis tritici


In Pteridium meiosis takes place at the time of

  • spore formation

  • organ formation in prothallus

  • spore germination

  • gamete formation


Which are sensitive to SO2 pollution?

  • Mosses

  • Algae

  • Lichen

  • Ferns


Yeast belongs to which class

  • Basidiomycetes

  • Eumycetes

  • Ascomycetes

  • None of these


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Which of the following is an edible fungus?

  • Agaricus

  • Albugo

  • Rhizopus

  • Puccinia


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