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单词 Abscission zone
释义

Abscission zone

英语百科

Abscission

(重定向自Abscission zone)
Leaf litter on the forest floor. Annual autumn leaf drop in temperate zones is caused by the abscission of the mature leaves from the growth season in response to the approach of cold winter weather.
Abscission of the hypanthium during development of a nectarine fruit
Streptocarpus leaf showing abscission line in response to reduced day length
Letzter Laubfall im Spätherbst

Abscission (from the Latin ab, meaning away, and scindere, meaning to cut) is the shedding of various parts of an organism, such as a plant dropping a leaf, fruit, flower, or seed. In zoology, abscission is the intentional shedding of a body part, such as the shedding of a claw, husk, or the autotomy of a tail to evade a predator. In mycology, it is the liberation of a fungal spore. In cell biology, abscission refers to the separation of two daughter cells at the completion of cytokinesis.

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