Multiple Choice Questions

Advertisement

Pinus seed is originated in :

  • capsule

  • microsporophyll

  • microsporangia

  • megasporophyll


D.

megasporophyll

Seed is the result of fertilization and consequent enlargement of the ovule. Two ovule or megasporangium are present on the adaxial side of ovuliferous scale. The ovuliferous scale and bracts constitute the megasporophyll. There are about 80-90 megasporophylls in a single female cone of Pinus.


Advertisement

Cotton belongs to family :

  • Solanaceae

  • Cucurbitaceae

  • Leguminoseae

  • Malvaceae


Terpentine is obtained from :

  • flowers of angiosperm

  • wood of gymnosperms

  • pteridophytes

  • bacteria


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


Advertisement

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

  • Meiosis

  • Endomitosis

  • Mitosis

  • Amitosis


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


DNA remains absent in :

  • chloroplast

  • nucleus

  • peroxysomes

  • chromosome


Photosynthetic unit is :

  • glyoxysome

  • spherosome

  • microsome

  • quantasome


Advertisement

The 'power house' of cell is :

  • nucleus

  • golgi body

  • mitochondria

  • chloroplast