Question

Why does an onion bulb shrivel after the green leaves have sprouted?

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Answer 1

An onion bulb shrivels after the green leaves have sprouted due to senescence, a natural aging process in plants. The bulb provides resources to support leaf growth, causing its cells to break down and lose moisture.

Step-by-step explanation:

An onion bulb shrivels after the green leaves have sprouted due to a process called senescence. Senescence is a natural aging process in plants where cells and tissues degrade and die. As the green leaves continue to grow and photosynthesize, they require energy and nutrients that are stored in the bulb.

As the bulb provides resources to support leaf growth, its cells start to break down and lose moisture, causing the bulb to shrink and shrivel. This process is a normal part of the plant's life cycle.

Answer 2

Plants produce many leaves but no bulbs/ Plants are stunted/ worms boring into roots/ Leaves turn silvery and white streaked or blotchy/ leaves may become distorted/ Leaves die back from tips; root turn pink to red to yellow; yields is reduced.

Step-by-step explanation: