Sugarcane show high efficiency of CO2 fixation because of :
Hatch and Slack cycle
The plant ash is an indication of :
organic matter of plant
mineral salts absorbed by plants
none of these
Which of the following fungi is found useful in the biological control of plant disease ?
Which of the following plant yields oil and fibre both ?
Capitulum inflorescence is found in :
Which of the following organs is not involved in the elicitation of immune response?
Brain is not involved in the elicitation of immune system. Lymphoid organs such as lymph nodes, spleen and thymus are involved in the elicitation of immune system.
Fever in malaria is due to :
entry of sporozoites into blood capillaries
entry of merozoites into liver cells
release of merozoites from red blood cells
entry of cryptomerozoites into red blood cells
The origin of kidney and ureter in Rana tigrina is :
ectodermal and mesodermal
mesodermal and endodermal
Which of the following is not a case of epimorphosis ?
Formation of sperms from small clumps of cells
Regeneration of tail in a lizard
Replacement of severed arm in starfish
Replacement of limb in salamander