(c) abscisic acid A layer of abscission is formed by abscisic acid. This layer separates the leaf’s living tissue from the other parts.
(a) phototropism Phototropism is the movement of a shoot in the direction of light. Geotropism is the term used to describe a plant’s growth in response to gravity. Chemotropism describes a plant’s growth in response to a chemical stimulus. Hydrotropism relates to a plant’s roots growing toward or away from moisture.
(b) chemotropism Pollen tubes grow toward ovules as a result of chemicals released by ovules.
(c) rapid cell divisions in tendrillar cells that are away from the support
(c) amount of water in cells Guard cells will become turgid if there is an excess of water, and flaccid if there is a loss of water.
(a) Adrenaline: Pituitary gland Adrenal gland secretes adrenaline, and pituitary gland produces the hormones TSH, FSH, and GSH.
(d) Abscisic acid Abscisic acid inhibits plant growth; as a result, it is not related to plant growth.
(c) inhibit growth Explanation: The length of cells is increase by auxins. Cell division is promoted by cytokinins. Gibberellins promote stem growth.
