Multiple Choice Questions

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In Dianthus, placentation is

  • Basal

  • Free central

  • Axile

  • Marginal


B.

Free central

In free central placentation, the syncarpous gynoecium is unilocular and the placenta are borne on a central column formed by an extension of the base of the gynoecium where the carpels fuse or the suppression of septa. e.g. Stellaria, Dianthus


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In leaves of Ce plants, malic acid synthesis during CO2 fixation occurs in

  • Bundle sheath

  • Mesophyll

  • Epidermis

  • Guard cells


Light reaction in stroma lamellae of the chloroplast results in the formation of

  • NADPH

  • ATP + NADPH

  • ATP K

  • O2


Kranz anatomy can be obseved in leaves of

  • Sorghum

  • Spinach

  • Mustrad

  • Tulip


The term 'bark' refers to

  • Phellem, phelloderm and vascular cambium

  • Periderm and secondary xylem

  • Cork cambium and cork

  • Phellogen, phellem, phelloderm and Secondary phloem


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Catkin inflorescence is found in

  • Wheat

  • Oat

  • Mulberry

  • Fig


The term 'keel' is used for special type of

  • Sepals

  • Petals

  • Stamenstellen

  • Carpels


Coffee and quinine are obtained from the

  • Leguminosae

  • Asteraceae

  • Rubiaceae

  • Poaceae


Membrane is absent in

  • Nucleus

  • Nucleolus

  • Vacuole

  • Lysosome


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Epigynous flowers are present in

  • Mustad

  • Brinjal

  • China rose

  • Cucumber