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Homoiohydry is the capacity of plants to regulate, or achieve homeostasis of, cell and tissue water content. Homoiohydry evolved in land plants to a lesser or greater degree during their transition to land more than 500 million years ago, and is most highly developed in the vascular plants.
A prefix meaning "two", e.g. bisulcate, having two sulci or grooves. biennial A plant which completes its life cycle (i.e. germinates, reproduces, and dies) within two years or growing seasons. Biennial plants usually form a basal rosette of leaves in the first year and then flower and fruit in the second year. bifid
A panegyric (US: / ˌ p æ n ɪ ˈ dʒ ɪ r ɪ k / or UK: / ˌ p æ n ɪ ˈ dʒ aɪ r ɪ k /) is a formal public speech or written verse, delivered in high praise of a person or thing. [1] The original panegyrics were speeches delivered at public events in ancient Athens.
Πανήγυρις is also transliterated as panegyry, [5] and in turn, some sources define panegyry to be a panegyric. [6] [7] A panegyric is a formal public speech ...
Phytochemicals are chemicals of plant origin. [1] Phytochemicals (from Greek phyto, meaning "plant") are chemicals produced by plants through primary or secondary metabolism. [2] [3] They generally have biological activity in the plant host and play a role in plant growth or defense against competitors, pathogens, or predators. [2]
Two examples of desiccation-resistant plants are Ramonda and Haberlea. [clarification needed] To test the changes in sucrose levels, Müller et al. put these species into three scenarios then recorded the percent of sucrose in dry weight. [5] As a control, plants were watered daily for 10 days, in these plants sucrose made up ~2% of the dry weight.
Heliotropism, a form of tropism, is the diurnal or seasonal motion of plant parts (flowers or leaves) in response to the direction of the Sun. The habit of some plants to move in the direction of the Sun, a form of tropism, was already known by the Ancient Greeks. They named one of those plants after that property Heliotropium, meaning "sun turn".
Aerenchyma in stem cross section of a typical wetland plant. Aerenchyma or aeriferous parenchyma [1] or lacunae, is a modification of the parenchyma to form a spongy tissue that creates spaces or air channels in the leaves, stems and roots of some plants, which allows exchange of gases between the shoot and the root. [2]