Biology Ab Abs Root Word: Ab or Abs, Meaning & Examples (ab, abs: away, from)

Many root words have the prefixes ab-, abs-, a-, and apo-. These prefixes have the Latin meaning of "away, from," which is where these root words come from. Abscission, adaxial, ablation, and aphasia are a few examples of words that begin with ab, ad, or abs in Biology.

What is Abscission?

The word "abscission" comes from the Latin words "ab," which means "away," and "scindere," which means "to cut." It is a cutting-off action or procedure. It is the organic separation of plant components, such as fruit ripening and dropping. It is a biologically defined program of controlled cell separation at the abscission zones (AZs) at certain locations on the plant body. Some phytohormones and environmental elements regulate abscission.

Abscission zone has the following traits:

• Their cytoplasm is thick.

• They may differ in the cell's composition and have smaller intercellular gaps.

• Walls.

• They react differently to plant hormones like auxins and ethylene.

Mechanism of Abscission

Abscission is one of the important physiological processes and plants that involves the shedding of various organs such as leaves, fruits and flowers. It is also important as it plays a very important role in the development agent and response to the environmental stimuli of the plant. Some important mechanism of Abscission is discussed below:

Abscission Signaling

Abscission signaling in plants is influenced by several factors including environmental stresses and production of reactive oxygen species. Some of the basics of Abscission signalling are discussed below:

• Environmental stresses such as UV exposure, cold, salt, bright light and pathogen infections lead to the production of reactive oxygen species which include H2O2 superoxide singlet Oxygen and hydroxyl radicals.

• It requires the expression of the cell wall which degrades enzyme cellulase that functions downstream of ethylene in the abscission signaling.

• Increased in the level of H2O2 also guesses the execution of the space which indicates the environment of cell wall degradation.

What does Adaxial Mean?

The term "adaxial" refers to the side of a leaf or plant organ that faces toward the stem or central axis. In most leaves, the adaxial surface is the upper side, typically exposed to sunlight for photosynthesis. Some important characteristics of Adaxial are discussed below:

Adaxial leaf surface characteristics

The following describes an adaxial leaf surface:

• Cell walls are gently waved on the adaxial surface.

• In all growing circumstances, the ratio of stomata on the adaxial and abaxial (side opposite to adaxial) leaf surfaces is comparable.

• The abaxial surface always transpires and photosyntheses at a higher pace than the adaxial surface.

• Adaxial surface photosynthesis's CO2-response curve, which also monitors transpiration, is especially influenced by growing CO2 abundance.

• On the other hand, photosynthesis on the abaxial surface is mostly independent of CO2 levels and somewhat independent of stomatal activity.

What is Ablation?

Ablation in biology is the removal of a biological structure or functionality, such as an organ or a cellular component. Ablation of genes and organs are two examples. Genetic slicing is also known as gene ablation.

Other Interesting Topics of Biology