PLANT GROWTH AND MOVEMENTS
Click on any option to know the CORRECT ANSWERS
Anti-gibberellin is ..... [BHU 2002]
Which hormone is not translocated ..... [AMU 2005]
Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?
application of iron and magnesium to promote synthesis of chlorophyll
frequent irrigation of the crop
treatment of the plants with cytokinins along with a small dose of nitrogenous fertilizer
removal of all yellow leaves and spraying the remaining green leaves with 2, 4, 5-trichlorophenoxy acetic acid
Movement stimulated by external factor is ..... [RPMT 2005]
Nicotiana sylvestris flowers only during long days and N.tabacum flowers only during short days. If raised in the laboratory under different photoperiods, they can be induced to flower at the same time and can be cross-fertilized to produce self-fertile offspring. What is the best reason for considering N.sylvestris and N.tabacum to be separate species? (2003)
they cannot interbreed in nature
they are reproductively distinct
they are physiologically distinct
they are morphologically distinct
There are 5 questions to complete.