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Androecium and Gynoecium

Science > Biology > Botany > Reproduction in Plants > Androecium and Gynoecium The flower is the reproductive unit in the angiosperms. It is meant for sexual reproduction. A typical flower has four different kinds of whorls arranged successively on the stalk or pedicel, called thalamus or receptacle. These whorls are calyx, corolla, androecium and […]

Tags Abiotic agents of pollination, Androecium, Anemophily, Apomixis, Asexual reproduction in plants, Biology, Biotic agents of pollination, Botany, Cellular endosperm, Ceratophyllum desnersum, Chiropterophily, Cross-pollination, Development of embryo, Development of endosperm, Development of Female Gamete, Development of Male gametophyte, Double fertilization, Endosperm, Entomophily, Epihydrophily, Fertilization, Formation of fruit, Formation of seed, Gynoecium, Helobial Endosperm, Hydrophilly, Hypohydrophily, Microsporangium, Nuclear endosperm, Ornithophily, Parthenocarpy, Pollen-Pistil Interaction, Pollination, Polyembyyony, Self-pollination, Sexual reproduction in moss, Sexual reproduction in plants, Sexual reproduction in spirogyra, Stigma, Structure of anther, Structure of ovule, Structure of pollen grain, Structure of seed, Zostera marina

Botany

Sexual Reproduction in Plants

Post author By Hemant More
Post date April 5, 2020
2 Comments on Sexual Reproduction in Plants

Science > Biology > Botany > Reproduction in Plants > Sexual Reproduction in Plants Sexual reproduction is also called amphimixis (Gk. amphi – both, mixis – union) or syngenesis (Gk. syn – together, genesis – origin) or amphigony (Gk. amphi – both, gony – marriage). In this article, we shall study sexual reproduction in plants. […]

Tags Abiotic agents of pollination, Androecium, Anemophily, Apomixis, Asexual reproduction in plants, Biology, Biotic agents of pollination, Botany, Cellular endosperm, Ceratophyllum desnersum, Chiropterophily, Cross-pollination, Development of embryo, Development of endosperm, Development of Female Gamete, Development of Male gametophyte, Double fertilization, Endosperm, Entomophily, Epihydrophily, Fertilization, Formation of fruit, Formation of seed, Gynoecium, Helobial Endosperm, Hydrophilly, Hypohydrophily, Microsporangium, Nuclear endosperm, Ornithophily, Parthenocarpy, Pollen-Pistil Interaction, Pollination, Polyembyyony, Self-pollination, Sexual reproduction in moss, Sexual reproduction in plants, Sexual reproduction in spirogyra, Stigma, Structure of anther, Structure of ovule, Structure of pollen grain, Structure of seed, Zostera marina

Botany

Asexual Reproduction in Plants

Post author By Hemant More
Post date April 5, 2020
No Comments on Asexual Reproduction in Plants

Science > Biology > Botany > Reproduction in Plants > Asexual Reproduction in Plants In this article, we shall study asexual reproduction in plants. Reproduction: Reproduction is defined as a biological process in which an organism gives rise to young ones (offspring) similar to itself. The offspring grow, mature and in turn produce new offspring. […]

Botany

Transport in Plants

Science > Biology > Botoany > Physiology > Transport in Plants Transportation is a process in which a substance either synthesized or absorbed in one part of the body reaches another. In living things, many substances such as food, gases, minerals salts, hormones, and waste products have to be transported from one part of the […]

Physical Chemistry

The Naming of Chemical Compounds

Post author By Hemant More
Post date April 4, 2020
16 Comments on The Naming of Chemical Compounds

Science > Chemistry > Introduction to Chemistry > Naming of Chemical Compounds In this article, we shall study the method of naming of chemical compounds In a chemical reaction, the molecular composition changes and it is represented by a chemical equation. In a chemical equation, the various substances involved as reactants or products are written […]

Tags Chemical formula of compound, Chemical formula of element, Chemistry, Ions, Naming acids, Naming bases, Naming binary compounds, Naming salts, Negative radicals, Positive radicals, Radicals, Symbol of an element

Physical Chemistry

Shielding or Screening Effect

Post author By Hemant More
Post date April 4, 2020
7 Comments on Shielding or Screening Effect

There are many observable patterns in the physical and chemical properties of elements as we descend in a group or move across a period in the Periodic Table. The term periodicity is used to indicate that some characteristic properties occur in the periodic table after definite intervals, with a varying (gradual increase or decrease) magnitude. The periodic recurrence of elements having similar […]

Tags Atomic properties, atomic radius, cause of periodicity, Effective nuclear charge, Electron affinity, Electron gain enthalpy, Ionic radius, Ionization enthalpy, Ionization potential, Oxidizing agent, Periodic properties, Periodic table, Periodicity, Reducing agent, Screening effect, Screening effect constant, Shielding effect, Slater's rule

Inorganic Chemistry

Halogens

The five elements; Fluorine (F), Chlorine (Cl), Bromine(Br), Iodine (I) and Astatine (At) belonging to VII A Group of the modern periodic table are collectively referred as halogens. The last element Astatine is radioactive and is very short lived hence generally excluded from the study. The word halogen is derived from the Greek words Halos […]

Physics

Simple Machines: Levers

Science > Physics > Simple Machines > Levers A simple machine is a mechanical device that makes our life easier. If a force is applied at one point, the simple machine transmits it to another point with a convenient change of magnitude and direction. In this article we shall study the terminology associated with the […]

Physics

Refraction Through Prism

Science > Physics > Refraction of Light > Refraction Through Prism In this article, we shall study refraction through prism. Prism: A prism is a portion of a transparent medium which is bounded by non-parallel plane surfaces. The two plane surfaces ABCD and AEFD intersecting each other in line AD are called the refracting faces […]

Physical Chemistry

Preparation of Colloids

Science > Chemistry > Colloids > Preparation of Colloids In this article, we shall study different methods of preparation of colloids. Preparation of Lyophilic Sols: For preparing lyophilic sol, the dispersed phase is directly added to dispersion medium in cold or by warming. Colloidal solutions of starch, glue, gelatin, etc. in water can be prepared […]