Abscission zone - Study guides, Class notes & Summaries

PCA Exam Defoliants Defoliation Leaf loss or leaf absicisson. In cotton production, it usually refers to leaf loss associated with application of a chemical that injures the leaf. Defoliation can also occur through natural leaf maturation and senessence, particularly with cooling weather after boll development Desiccation acclereated drying of plant tissue Harvest Aid Chemical chemicals with various modes of action that facilitate machine harvest by influencing boll opening, reduci...

PCA Exam Defoliants Defoliation Leaf loss or leaf absicisson. In cotton production, it usually refers to leaf loss associated with application of a chemical that injures the leaf. Defoliation can also occur through natural leaf maturation and senessence, particularly with cooling weather after boll development Desiccation acclereated drying of plant tissue Harvest Aid Chemical chemicals with various modes of action that facilitate machine harvest by influencing boll opening, reduci...

abiotic: - ANSWER-pertaining to the nonliving parts of an ecosystem, such as soil particles, bedrock, air, water. abscisic acid (ABA): - ANSWER-a plant hormone that stimulates stomatal closure and promotes seed and bud dormancy. abscission zone: - ANSWER-a wall of cells at the base of a petiole, that allows the leaf to separate from the stem. acceptable risk: - ANSWER-the amount of risk that an owner is willing to accept before tree failure. accessibility: - ANSWER-the establishment ...

Abscission Zone - ANSWER-Area at the base of the petiole where cellular break down leads to leaf and fruit drop. Absorbing root - ANSWER-Fine,fibrous roots that take up water and minerals. Most absorbing roots are within the top 12 inches (30cm) of soil. Adventitious bud - ANSWER-Bud arising from a place other than a leaf axil or shoot tip,usually as a result of hormonal triggers. Aerial root - ANSWER-Aboveground roots. Usually adventitious in nature and sometimes having unique adaptive...

PCA Exam Defoliants Defoliation Leaf loss or leaf absicisson. In cotton production, it usually refers to leaf loss associated with application of a chemical that injures the leaf. Defoliation can also occur through natural leaf maturation and senessence, particularly with cooling weather after boll development Desiccation acclereated drying of plant tissue Harvest Aid Chemical chemicals with various modes of action that facilitate machine harvest by influencing boll opening, reduci...

ISA Arborist Chapter 1 Questions and Answers Already Passed Abscission Zone Area at the base of the petiole where cellular break down leads to leaf and fruit drop. Absorbing root Fine,fibrous roots that take up water and minerals. Most absorbing roots are within the top 12 inches (30cm) of soil. Adventitious bud Bud arising from a place other than a leaf axil or shoot tip,usually as a result of hormonal triggers. Aerial root Aboveground roots. Usually adventitious in nature and sometimes havi...

Arborist Certification Chapter 1 with 99 Terms 100% Verified Abscission Zone - CORRECT ANSWER area at the base of the petiole where cellular breakdown leads to leaf drop Absorbing Roots - CORRECT ANSWER fine, fibrous roots that take up water and minerals, most of them are within the top 12 inches (30 cm) of soil Adventitious Bud - CORRECT ANSWER bud that arises from a place other than a leaf axil Anthocyanins - CORRECT ANSWER red, purple, or blue pigments, responsible for those col...

cambium thin sheath of dividing cells that produces the cells which become the vascular system of the tree, xylem and phloem xylem conduct water, support weight, store carbohydrates, defense against spread of disease Phloem moves carbohydrates from leaves throughout tree for storage cork cambium second lateral meristem which produces the bark; periderm. symplasm living cells inside xylem apoplasm non-living cells inside xylem tracheids elongated n...

Abscission Zone - ANSWER-Area at the base of the petiole where cellular break down leads to leaf and fruit drop. Absorbing root - ANSWER-Fine,fibrous roots that take up water and minerals. Most absorbing roots are within the top 12 inches (30cm) of soil. Adventitious bud - ANSWER-Bud arising from a place other than a leaf axil or shoot tip,usually as a result of hormonal triggers. Aerial root - ANSWER-Aboveground roots. Usually adventitious in nature and sometimes having unique adaptive...

abiotic - ANSWER pertaining to the nonliving parts of an ecosystem, such as soil particles, bedrock, air, water. abscisic acid (ABA) - ANSWER a plant hormone that stimulates stomatal closure and promotes seed and bud dormancy. abscission zone - ANSWER a wall of cells at the base of a petiole, that allows the leaf to separate from the stem. - two functions: leaf drop and to protect the region of the stem against desiccation acceptable risk - ANSWER the amount of risk that an owner is willi...