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Panchanan Maheswari, FRS (9 November 1904 – 18 May 1966 [1] in Jaipur Rajasthan) a prominent Indian botanist noted chiefly for his invention of the technique of test-tube fertilization of angiosperms. This invention has allowed the creation of new hybrid plants that could not previously be crossbred naturally.
Plant nutrition is the study of the chemical elements and compounds necessary for plant growth and reproduction, plant metabolism and their external supply. In its absence the plant is unable to complete a normal life cycle, or that the element is part of some essential plant constituent or metabolite .
Nutrients in the soil are taken up by the plant through its roots, and in particular its root hairs.To be taken up by a plant, a nutrient element must be located near the root surface; however, the supply of nutrients in contact with the root is rapidly depleted within a distance of ca. 2 mm. [14] There are three basic mechanisms whereby nutrient ions dissolved in the soil solution are brought ...
Nepenthes khasiana (/ n ɪ ˈ p ɛ n θ iː z ˌ x æ s i ˈ ɑː n ə /; after the Khasi Hills, to which it is largely endemic) is an endangered tropical pitcher plant of the genus Nepenthes. It is the only Nepenthes species native to India. It is thought to attract prey by means of blue fluorescence. [4]
Dr. Dinesh Prasad Saklani is the director of NCERT since 2022. [2] In 2023, NCERT constituted a 19-member committee, including author and Infosys Foundation chair Sudha Murthy, singer Shankar Mahadevan, and Manjul Bhargava to finalize the curriculum, textbooks and learning material for classes 3 to 12. [4]
"Long-day plants (LDPs) flower only in long days (qualitative LDPs), or their flowering is accelerated by long days (quantitative LDPs)" [5] These types of flowering plants are differentiated by the whether the day has exceeded some duration - usually calculated by 24-hour cycles - known as the critical day length. [ 5 ]
In seed plants (gymnosperms and flowering plants), the sporophyte forms most of the visible plant, and the gametophyte is very small. Flowering plants reproduce sexually using flowers, which contain male and female parts: these may be within the same ( hermaphrodite ) flower, on different flowers on the same plant , or on different plants .
An example of this is the engineering of a plant to express a pesticide, thereby ending the need of external application of pesticides. An example of this would be Bt corn . Whether or not green biotechnology products such as this are ultimately more environmentally friendly is a topic of considerable debate. [ 35 ]