NEET BIOLOGY

Detailed explanation-1: -Many of our summer-blooming flowers and garden vegetables are long-day plants, such as asters, coneflowers, California poppies, lettuce, spinach and potatoes. These all bloom when the days are long, during our summers. And some plants form flowers regardless of day length. Botanists call these “day-neutral” plants.

Detailed explanation-2: -Long-day (short-night) plants flower during the spring, when darkness is less than a critical length (often eight to 15 hours). Examples include spinach, Arabidopsis, sugar beet, and the radish flower.

Detailed explanation-3: -They are: Long Day Plants: They require the periodic exposure of light exceeding the critical period to induce flowering. Short Day Plants: They require the periodic exposure of light less than the critical period to induce flowering. Day-neutral Plants: The flowering in many plants does not depend on the photoperiod.

Detailed explanation-4: -flower only when amount of daylight lasts longer than their critical threshold, typically in spring or early summer, before the equinox. Examples of these plants include: aster, hibiscus, coneflower, lettuce, spinach, radish, sugar beet, and potato.