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Which of the following is the example for Long day plants (LDP):
Option: 1
Xanthium and Chrysanthemum
Option: 2
Hyoscymus niger and Spinacea oleracea
Option: 3
Cotton and Sunflower
Option: 4
Mutant Maryland Mammoth
Answers (1)
(i) Short-day plants (SDP) : Cocklebur (Xanthium), Chrysanthemum, Sugarcane, Tobacco (Mutant Maryland Mammoth), Soyabean, Strawberry, etc.,
(ii) Long-day plants (LDP) : Spinach (Spinacea oleracea), Henbane (Hyoscyamus niger), Radish, Sugar-beet, Wheat, Lettuce, Poppy, Larkspur, Maize, etc.
(iii) Day-neutral plants: Cucumber, cotton, sunflower, tomato, some varieties of peas, etc.
Hence, the correct answer is option 2.
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