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What Is Primary Growth? All plant growth occurs by cell division elongation. Cell division occurs primarily in regions of undifferentiated cells known as meristems. Cell division in the apical meristems and subsequent elongation and maturation of the new cell produces primary growth. Therefore, primary growth can be defined as is growth that occurs as a … Read more
What Is Transpiration? Transpiration is the process by which plants lose water in the form of vapor to the atmosphere through the stomata. Transpiration cools the plant, changes osmotic pressure of cells and enables mass flow of mineral nutrients and water from roots to shoots. Two major factors influence the rate of water flow from … Read more
Periodic Signal A signal is considered to be periodic signal if it completes a pattern within a measurable time frame, called a period and repeats that pattern over identical subsequent periods. A period is defined as the amount of time (expressed in seconds) required to complete one full cycle. Sinusoidal wave, cosine wave, triangle wave … Read more
What Is A Potentiometer? A potentiometer is a manually adjustable variable resistor with three terminals. Two terminals are connected to both ends of a resistive element, and the third terminal connects to a sliding contact referred to as a wiper, moving over the resistive element. The output voltage of the potentiometer is determined by the … Read more
Botanically, a fruit is the seed-bearing structure in flowering plants also known as angiosperms formed from the ovary after flowering. However, in some fruits, it is not the ovary that forms the fruit. In fact, some other part of the flower, like the thalamus, inflorescence, and calyx are modified to become a part of the … Read more
What Is Progesterone? Progesterone is an endogenous sex hormone that is responsible for menstrual cycle and maintaining pregnancy by preparing the uterus for implantation and maintaining its elasticity. Progesterone is one of the progesterone steroid hormones. It is secreted by the corpus luteum, a temporal endocrine gland that female body produces after ovulation, during the … Read more
What Is Internal Fertilization? Internal fertilization is the union of an egg cell with a sperm during sexual reproduction inside the female body. It occurs mostly in terrestrial animals. For internal fertilization to happen there is need for a method of introduction of male sperms into the female reproductive tract. Different animals have different methods … Read more
Fleming’s left and right hand rules were first discovered and described by John Ambrose Fleming in 19th century. These rules try to explain the relationship between magnetic field, the current and force. These rules only show the direction and do not determine the magnitude of magnetic field, current and force. In practice, Fleming’s Left Hand … Read more
What Is NPN Transistor? NPN is an acronym for Negative, Positive, Negative configuration. NPN transistor is a type of bipolar junction transistor which is composed of three layers, whereby two N-type doped semiconductor materials are separated by a thin layer of P-type doped semiconductor material. In NPN transistor, the majority charge carriers are electrons whereas … Read more
Among the many classifications of sugar, “reducing sugar” and “non-reducing sugar” stand out as two intriguing categories that often confuse both culinary enthusiasts and scientific minds alike. What Are Reducing Sugars? Reducing sugar is any carbohydrate which is capable of being oxidized and causes the reduction of other substances without having to be hydrolyzed first. … Read more