Thursday, April 30, 2009

What happens to flower parts after fertilization?

Specifically: stamen, petal, ovary, sepal, egg and ovule

What happens to flower parts after fertilization?
Stamen - either dries up or drops off, depending on species.


Petal - dries up or drops off


Ovary - thickens and enlarges to form the fruit


Sepal - often dries up and stays attached


Egg - when fertilized becomes the zygote which develops into the embryo of the seed


Ovule - becomes the seed
Reply:Those not needed in the maturation of the seeds shivel up and die.
Reply:The stamen goes limp. Then rolls over and goes to sleep.
Reply:the stamens drop off as do the petal and sepal


the ovary grows rich with fructose forming the fruits and the egg or ovule form the seeds


as in the apple if you turn it upside down you will see the remenants of the stamens and nothing else


the fruit is the ovary wall and seeds are the pips
Reply:Has a cigarette first.
Reply:It actually depends on the plant. Most of the parts will fall off because they are no longer needed. Stamen and petals will fall off (I cannot think of a plant where this doesn't happen). Sepals may or may not fall off. Think of a strawberry or a tomato. The leafy structures on these fruit are actually the remnants of the sepals. The ovules become the seeds of the fruit, and the ovary (I think that is what you meant by 'egg') swells to become the fruit, which could be a berry, a capsule, a seed pod, an apple or pear-like fruit, etc. It can vary a lot from plant to plant, and because of this, the description of the fruit can be key when identifying a plant.


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