Long Day Plants

Q. In short day plants, the dark period is critical and so it must be continuous for a certain period. These plants are also called as long night plants. In long day plants, the light period is critical, so it must be continuous for certain duration. These plants are also called as short night plants.

1. True
2. False

Q. If a plant produces flower on exposure to alternating exposures of 4 hours light and 2 hours dark in a 24 hour cycle, it should be a:

1. Short day plant
2. Day neutral plant
3. Long short day plant
4. Long day plant

Q. Flowering is controlled by relatively longer day length in:

1. Spinach
2. Tobacco
3. Tomato
4. Maize