Botany

Widows thrill plant: Classification, Distribution, Botanical Description, Propagation, Chemical Phytoconstituents, and Uses

The ornamental plant Kalanchoe (Kalanchoe blossfeldiana, 2n=34), sometimes known as the Panda plant, is a member of the Crassulaceae family and is grown in pots all over the world (Ofokansi et al., 2005; Nahar et al., 2008). In 1763, Michel Adanson published the first description of the approximately 130 species of annual and perennial shrubs, climbers, and small trees that make up the genus Kalanchoe.
The species is distinguished by a significant concentration of cardiac glycosides. As a result, it is becoming more significant in medicine and pharmacy. Recent research suggests that Kalanchoe, which has a high concentration of metabolites with antimitotic action, may be useful in the treatment of cancer (Garces et al., 2009). Additionally, it is employed in the treatment of burns, allergies, and skin conditions (Hsieh et al., 2013). Since kalanchoe grows slowly, it is crucial to create a tissue culture method for its quick production for both commercial and therapeutic uses. The development of biotechnological techniques to enhance the production of this plant in-vitro is of great interest due to its therapeutic relevance and potential to produce value-added secondary metabolites in tissue culture (Khan et al., 2006). Although leaf and stem cuttings are an easy way to multiply kalanchoe, this method is slow and inefficient, frequently producing low-quality plants. For the first time, Kalanchoe blossfeldiana regeneration was reported by Bhuiyan et al. (2005), resulting in quick replication of high-quality plants. In-vitro propagation is vital for the quick generation of plants of the highest grade (Ioannou et al., 1992; Frello et al., 2002; Khan et al., 2006; Sanikhani et al., 2006)

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Cuphea carthagenensis: Classification, Distribution, Morphology, and Phytochemical Constituents

Cuphea carthagenensis, also known as “Colombian waxweed,” is a naturally occurring herbaceous weed in the Lythraceae family (Graham, 1975). The majority of the time, it is used to treat conditions like hypertension, heart disease, fever, viral illnesses like herpes, etc. Historically, Cuphea carthagenensis has been mistaken for the eastern USA-native Cuphea viscosissima (Graham, 1988; Graham 1975). The floral tube, which is green in Cuphea Carthagenensis and purple-green in Cuphea viscoissima, can be used to tell them apart. Having creeping, rooted stems distinguishes Cuphea carthagenensis, a species from tropical America, from Cuphea strigulosa (Graham, 1988).

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Bryophytes: Liverworts, Hornworts, and Mosses

Hepaticopsida (Liverworts)
The name Hepaticopsida has been derived from the Latin word Hepatica which means liver. In the medieval period, these plants were used in treating liver disorders. Hence the members of this class are commonly known as Hepatics or Liverworts. The class is represented by about 280 genera and 9500 species distributed in both tropical and temperate parts of the world.

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Cyanobacteria: Definition, Characteristics, Occurrence, Cell Structure, Reproduction, and, Importance

The name cyanobacteria come from their color, giving them their other name, “blue-green algae”, The cyanobacteria are also known as Cyanophyceae because of their blue color. they are also called micro-alga, blue-green algae. It is the largest gram-negative bacteria. The cyanobacteria are also called oxy–photo–bacteria because it contains PS1 and PS2. The PS2 which is present is involved in the water broke down means there is the release of oxygen. When it performs photosynthesis it releases oxygen so we can say it is oxygenic photosynthesis, due to this oxygenic photosynthesis was performed by cyanobacteria, a primitive earth atmosphere that was anaerobic that was changed to present-day earth atmosphere i.e aerobic. this is the only bacterial group that shows oxygenic photosynthesis. the present-day oxygen which is present today is due to the presence of their activity i.e cyanobacteria.

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Archaebacteria: Definition, Characteristics, Types, Nutrition, and, Respiration

The word Archaea comes from the Ancient Greek word meaning ancient things. the first observed archaea were living in harsh environments such as hot springs and salt lakes. Archaea are found in almost every habitat, including soils, oceans, and marshlands. They are found in the gut, mouth, and skin. these are old bacteria. These are the organisms when the first life originated. these are the first organisms as they are capable of surviving in extreme conditions e,g in hot conditions at almost 100 degrees, highly acidic conditions i.e. high PH and high salt areas.
Archaebacteria Characteristics
Archaebacteria have several characteristics
1. the Archaebacteria are primitive from an evolutionary point of view
2. they are considered the oldest living fossils
3. the Archaebacteria are prokaryotic organisms
4. Archaebacteria have cell membranes made up of branched lipids and hydrocarbons.
5. their cell wall is made up of complex polysaccharides and complex polypeptides.
6. the nucleoid is present
7. Peptidoglycan is absent in the cell wall of Archaebacteria.
8. Mostly behave as obligate anaerobes i.e oxygen is a poison to these bacteria.

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Foxtail palm: Classification, Characteristics, and, Insect Problems

Wodyetia bifurcata (Foxtail palm) A member of the Arecaceae, or palm family, The leaflets are deep green with a silvery underside and are approximately 6 inches long and 2 inches wide. The species of Foxtail palms mature at roughly 12 years of age and are then able to produce inflorescences, earning them the honorary name “Wodyeti” in honour of an Australian aborigine. They were the last member of his tribe to be familiar with the local flora and fauna, as well as the inflorescence that grows at the base of the crownshaft.
The epithet bifurcata is Latin for “bifurcate” which means “bears white blooms.” Concerning the plant’s leaves, both male and female flowers are “twice divided.” The plant is capable of self-fertilization, making it the only species in its genus that can be classified as monoecious. It is native to Australia.

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Stomatal Movement: Opening and Closing of Stomata, Mechanism, Antitranspirants, and Guttation

Stomatal Movement: Opening and Closing of Stomata, Mechanism, Antitranspirants, and Guttation Opening and Closing of Stomata The distinctive shape of the stomata makes them distinct from the nearby epidermal cells. The epidermal cells that surround the stomata nearby can resemble other epidermal cells or they can be unique and specialised. They are referred to as

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Transpiration: Definition, Types, Factors, and Significance

Transpiration As a Necessary Evil,
1. When the rate of transpiration is high and the soil is water-deficient, the plants may experience an internal water deficit that affects metabolic functions.
2. To control transpiration, many xerophytes must undergo structural modifications and adaptations.
3. To prevent water loss, deciduous trees must lose their leaves in the fall.
However, despite the numerous drawbacks, plants must transpire because of their unusual internal structure, especially that of their leaves. Although primarily intended for gaseous exchange for respiration, P.S., etc., their interior structure is such that it cannot prevent water from evaporating. As a result, several scientists, including Curtis (1926), have referred to transpiration as a necessary evil.

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Biology: Definition, Branches, Botany, Zoology, Systematics, and Significance

A few key elements concerning Evolution
About 25 billion years ago, the Universe began to form. About 4 billion years ago, life began. The conditions on Earth at the time of life’s inception are as follows:
1. Extremely hot temperatures, i.e. 800°C
2. Gases such as CH4, NH3, He, H2, and water vapours were present in the form of lighter components.
3. Heavy elements such as Fe (iron) and Nickel (Ni) are found in the Earth’s core.
4. The only source of energy was ultraviolet light, which favoured photochemical reactions.
5. During the period of evolution, there was no molecular oxygen in the atmosphere, i.e. the atmosphere was reduced.

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