What does Photonasty mean?

: a nastic movement that is associated with changes in light intensity.

What is Photonasty in plants?

Photonasty Movement: The non-directional movement of a plant part usually in the petals of flowers in response to light is photonasty movement. The stimulus in Photonasty is light. This is a growth movement in plants and an example of Photonastic movement.

What does Chemonasty mean?

(ˈkɛməʊˌnæstɪ) n. (Botany) botany the nastic movement of a plant in response to a chemical stimulus.

What is the meaning of Hydrotropic?

Hydrotropism is a form of tropism characterized by the growth or movement response of a cell or an organism to moisture or water. A positive hydrotropism is one in which the organism tends to grow towards moisture whereas a negative hydrotropism is when the organism grows away from it.

What is the legal definition of a marriage?

Legal Definition of marriage. 1 : the state of being united to a person as spouse in a legal, consensual, and contractual relationship recognized and sanctioned by and dissolvable only by law — see also divorce ,Obergefell v. Hodges — compare civil union.

What is the meaning of the word photonasty?

Also found in: Medical, Encyclopedia, Wikipedia. photonasty. photonasty. the tendency in certain plant species to respond to light by developing sufficient cellular force or growth on one side of an axis to change the form or position of the axis, as in the opening and closing of the flowers of four-o’clocks.

How does a sociologist define a marriage ceremony?

This is followed by the marriage ceremony, during which mutual rights and responsibilities may be specifically stated and agreed to. In many places, the state or a religious authority must sanction a marriage in order for it to be considered valid and legal.

Which is the best description of a marriage?

Marriage 1 Definition. The legal union of a couple as spouses. 2 Overview. In the English common law tradition from which our legal doctrines and concepts have developed, a marriage was a contract based upon a voluntary private agreement by a man 3 Menu of Sources