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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]
Jiva (Sanskrit: जीव, IAST: jīva), also referred as Jivātman, is a living being or any entity imbued with a life force in Hinduism and Jainism. [1] The word itself originates from the Sanskrit verb-root jīv, which translates as 'to breathe' or 'to live'.
The tree of life or universal tree of life is a metaphor, conceptual model, and research tool used to explore the evolution of life and describe the relationships between organisms, both living and extinct, as described in a famous passage in Charles Darwin's On the Origin of Species (1859). [1]
The definition of life has long been a challenge for scientists and philosophers. [2] [3] [4] This is partially because life is a process, not a substance. [5] [6] [7] This is complicated by a lack of knowledge of the characteristics of living entities, if any, that may have developed outside Earth.
Example of aerial roots in the rubber fig (Ficus elastica) Due to the habitat in which R. apiculata occurs, the roots possess a special trait designed to anchor the plant to the soil. [4] [9] It still acts as a normal root through in-taking both water and nutrients with the only difference being it descends from the branches. Aerial roots ...
Lomatium roots range from woody taproots to more fleshy underground tuberous-thickened roots.The plants are green and grow the most during the spring when water is available, and many species then set seed and dry out completely above ground before the hottest part of the year, while storing the energy they gained from photosynthesizing while water was available to them in their deep roots.
These plants have very deep roots that are able to reach the water table. Phreatophytes are not only characteristic of arid or desert zones, but also of wetlands, floodplains, depressions that hold water and estuaries. In the wetlands, ecological classification does not provide a special classification, since in this case, most of the plants in ...
The diagnostic characteristic of E. radicans is its tendency to sprout roots all along the length of the stem; other crucifix orchids only produce roots near the base. [3] It is a frequent roadside weed at middle elevations in Central America. Its common name 'crucifix orchid' refers to the tiny cross-shaped labellum in the centre of the flower ...