Definition Of Abscission Layer In Biology

Abscission layer in british. In botany abscission is the normal separation of a plant part or organ.

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Abscission from latin ab away and scindere to cut is the shedding of various parts of an organism such as a plant dropping a leaf fruit flower or seed.

Definition of abscission layer in biology. The noun is of latin origin and was first used in 15th century english as a word to describe the act or process of cutting off. In compound leaves the abscission zones occur in the petiole of the leaf as a whole and at the base of individual leaflets. A layer of parenchyma cells that is formed at the bases of fruits flowers and leaves before abscission.

Plural abscission layers biology botany a layer of cells in a plant that differ from those above and below and contain abundant starch and dense cytoplasm which upon disorganization begin the process of abscission or the natural separation of the leaf from the rest of the plant. The natural separation of flowers fruit or leaves from plants at a special separation layer. Definition of abscission layer.

The separation of a leaf flower or fruit from a plant as a result of natural structural and chemical changes the abscission zone is a layer of weak thin walled cells that form across the base of the plant part where the break eventually occurs. It occurs to separate a plant part or organ that may no longer be necessary. In simple dicotyledonous leaves the abscission zone occurs within the petiole or at its base.

Abscission layer noun botany. The layer of specialized cutinized parenchyma cells that develops in the abscission zone the disintegration of which causes abscission. The word abscission in biological terms means shedding of various parts of an organism.

Science definitions for abscission. Abscission layer synonyms abscission layer pronunciation abscission layer translation english dictionary definition of abscission layer. It occurs to separate a plant part or organ that may no longer be necessary.

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. The abscission zone consists of a separation layer through which the actual break occurs and the protective layer. N a layer of parenchyma cells that is formed at the bases of fruits flowers and leaves before abscission.

The act or process of cutting off.