Which organic chemicals are included in shoot with photoperiodism ? (AIIMS-1996)

Related MCQs

• For the given statement which option is correct? Statement (X)Organic farming means agriculture with the help of chemicals. (Y)500 members of Haryana Kissan welfare club have adopted this agricultural practice.
• Photoperiodism is .........
• An underground specialized shoot with reduced disc like stem covered by fleshy leaves is: (J.K.R.E.T. 2000)
• Which chemicals increase growth of aquatic organism?
• Which one is correct for X, Y & Z ? X - The excess response of the immune system to certain antigens present in the environment is called allergy. Y - Allergies take place due to the release of chemicals like serotonin & histamine from mast cells. Z - Adlrenalin like medicine quickly reduce the symptoms of allergy.
• “Specific preservative chemicals for preservation are sprayed on plant specimen”. This process is known as —————
• X is included in environmental factors; y is included in ediphic ( soil related) then the x & y is.... X Y
• Which is appropriate option if we take ‘T’ for correct statement and’F’ for wrong statement ? (i) Energy pyramids are always upright. (ii) Detritus food chain begins with dead organic matter (iii) C4 path is the only path seen in xerophytes (iv) Biodiversity is less in equatorial region because of more sunlight (v) At normal Temperature daphnis lays parthenogenetic eggs. which develops into male(0 )
• Which is an organic component found in most cells? [DPMT 2009]
• A living connecting link which provides evidence for organic evolution is ______.