Search results
Results from the WOW.Com Content Network
Both types of organisms use such compounds via cellular respiration to both generate ATP and again form CO 2 and water (two red arrows). A heterotroph ( / ˈ h ɛ t ər ə ˌ t r oʊ f , - ˌ t r ɒ f / ; [ 1 ] [ 2 ] from Ancient Greek ἕτερος ( héteros ) 'other' and τροφή ( trophḗ ) 'nutrition') is an organism that cannot produce ...
Historically, these two groups formed the two divisions of the flowering plants. Largely from the 1990s onwards, molecular phylogenetic research confirmed what had already been suspected: that dicotyledons are not a group made up of all the descendants of a common ancestor (i.e., they are not a monophyletic group).
Idioblasts can contain biforine cells that form crystals. The chemicals are excreted by the plant and stored in liquid or crystalline form. In bundles they are known as druse and as crystals they can be of raphide [needle] form. When the end of an idioblast is broken the crystals or other substance is ejected by internal water pressure.
Dimorphic – of two different forms. Ecad – a plant assumed to be adapted to a specific habitat. Ecotone – the boundary that separates two plant communities, generally of major rank – trees in woods and grasses in savanna for example. Ectogenesis – variation in plants due to conditions outside of the plants.
A continuous morphological variation in form within a species or sometimes between two species. clone A plant derived from the asexual vegetative reproduction of a parent plant, with both plants having identical genetic compositions. coalescent Having plant parts fused or grown together to form a single unit. cochleariform Concave and spoon-shaped.
In plants, carotenoids can occur in roots, stems, leaves, flowers, and fruits. Carotenoids have two important functions in plants. First, they can contribute to photosynthesis. They do this by transferring some of the light energy they absorb to chlorophylls, which then uses this energy for photosynthesis. Second, they can protect plants which ...
Plant morphology treats both the vegetative structures of plants, as well as the reproductive structures. The vegetative (somatic) structures of vascular plants include two major organ systems: (1) a shoot system, composed of stems and leaves, and (2) a root system. These two systems are common to nearly all vascular plants, and provide a ...
Many plants store chemicals in the form of inactive glycosides. These can be activated by enzyme hydrolysis, which causes the sugar part to be broken off, making the chemical available for use. Terpenes are a large and diverse class of organic compounds , produced by a variety of plants, particularly conifers , which are often strong smelling ...