Multiple Choice Questions

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Photosynthetic unit is :

  • glyoxysome

  • spherosome

  • microsome

  • quantasome


D.

quantasome

Quantasomes are called photosynthetic units. These units were isolated by Park and Biggins in 1964 and termed as quantasome. These subunits measure about 180 x 155 x 100 Å and contain 230 chlorophyll molecules.


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Pinus seed is originated in :

  • capsule

  • microsporophyll

  • microsporangia

  • megasporophyll


Plant cell is differ from animal cell because of

  • the presence of cell wall and absence of chlorophyll in plant cell

  • the presence of cell wall and chlorophyll in plant cell

  • the absence of cell wall and presence of chloroplast in animal cell

  • the absence of cell wall and presence of chlorophyll in plant cell


Terpentine is obtained from :

  • flowers of angiosperm

  • wood of gymnosperms

  • pteridophytes

  • bacteria


The 'power house' of cell is :

  • nucleus

  • golgi body

  • mitochondria

  • chloroplast


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DNA remains absent in :

  • chloroplast

  • nucleus

  • peroxysomes

  • chromosome


The endosperm of Pinus is :

  • haploid

  • diploid

  • triploid

  • polyploid


From which part of Cocos nucifera, coir is obtained :

  • Endocarp

  • Mesocarp

  • Epicarp

  • Any part of fruit


Cotton belongs to family :

  • Solanaceae

  • Cucurbitaceae

  • Leguminoseae

  • Malvaceae


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Which of the following maintain the constant number of chromosomes generation after generation?

  • Meiosis

  • Endomitosis

  • Mitosis

  • Amitosis