Category: Diet & Nutrition

Essay on the National Population Policy of India – It is an undeniable fact that India is over-populated. How to face this problem of over-population? India must make planned efforts to control the growing population for which she should have a well- thought out population policy. A more positive and more effective policy of population control is the need of the hour.Population policy in general refers to the policy intended to decrease the birth rate or the growth rate. Statement of goals, objectives and targets are inherent in the population policy.India formed its first “National Population Policy” in April 1976. It called for an increase in the legal minimum age of marriage from 15 to 18 for females and from 18 to 21 years for males. The policy was, however,…

Essay on the Basic Features of Society – Man is a social animal and he always lives in society. Like him some other creatures such as ants, termites, birds, monkeys, apes, etc., also live in societies.Human society, in comparison with other societies, is unique in several respects. Still some of the characteristics are common to all kinds of societies whether they are animal or human. ADVERTISEMENTS: The Basic Features: (i) As Kingsley Davis has pointed out, any society involves a certain level of association. But this association is more intricate than a mere aggregation and less complex than an organism, (ii) Further, the units that the societies bring together at the level of association are not cells or organs, but individuals. The terms ‘aggregation’ and ‘organism’ are to be understood…

Genetically modified or GM crops as they are commonly known refers to the plants whose DNA has been modified with the help of genetic engineering techniques and are then grown and cultivated.Mutation Breeding was the earlier alternative to provide better yields where an organism is exposed to radiation or chemicals to bring permanent change to the quality of the plant and its yield.Selective breeding, animal or plant breeding was also done to introduce new traits into a plant that it did not possess naturally. The objectives were primarily to prevent attack of insects and pests, resistance to diseases and changing environmental conditions, enabling a plant to grow in a different soil and climate than the one in which it normally grows. 3rdeyevisionblog.files.wordpress.com ADVERTISEMENTS: A GM crop involves techniques that are…

Before highlighting the concept of Anatomy and Physiology, we all should know that in physical education and sports the only elements that in use is nothing but human body itself.It is from Human body that performs in various sports and physical activities, exercises etc. It means that no physical activities, exercises, performances etc., can be performed with the help of human body.Anatomy and Physiology are interrelated with each other and without understanding anatomy and physiology, we cannot even think of physical education and sports. previews.123rf.com ADVERTISEMENTS: In order to study physical education and sports from scientific point of view, one should have familiar with anatomy and physiology. The studies of human bodily movements and effects of exercises on human body are performed only with the help and knowledge of anatomy…

Mendelian inheritance deals with characters which are contrasting and which have only two states of existence i.e. dominant or recessive are controlled by a single pair of genes.In pea plants, the characters chosen by Mendel were clear cut representing two extremes without any intermediary or intergradations stages.These variations are called discontinuous variations and represent a qualitative difference between the two genes. Image Source: http://loghouseplants.com ADVERTISEMENTS: Even in Mendel’s experiments some minor quantitative differences did appear which he ignored on a statistical basis.However Mendel was able to formulate his laws, because by and large the characters he studied (luckily for him) represented the simplest pattern of inheritance.Not all characters in organisms can be analyzed by a qualitative assessment. Certain characters like height, weight, size, yield etc. are on a quantitative dimension…

57 Questions with Answers and Explanations on Biological Classification for Biology Students.1. Static concept of species was put forward by (a) de Candolle Image Source: ic.ucsc.edu ADVERTISEMENTS: (b) Linnaeus(c) Theophrastus(d) Darwin. ADVERTISEMENTS: Answer and Explanation: 1. (c): Linnaeus, 1758 developed “Binomial system of nomenclature”, de Candolle gave the term taxonomy. Theophrastus, father of botany, gave names and descriptions of 480 plants in his book. ‘Histuria plantarum’ and Darwin proposed the theory of natural selection or origin of species.2. The term “New Systematics” was introduced by (a) Bentham and Hooker ADVERTISEMENTS: (b) Linnaeus(c) Julian Huxley(d) A.P. de Candolle.Answer and Explanation: 2. (c): The term “New Systematics” was given by Julian Huxley (1940). This classification takes into account the cytological, morphological, genetical, anatomical, palynological and physiological characters. 3. Classification given by Bentham…

69 Questions with Answers and Explanations on Mendelian & Post Mendelian Genetics for Biology Students.1. Which contribute to the success of Mendel? (a) qualitative analysis of data Image Source: upload.wikimedia.org ADVERTISEMENTS: (b) observation of distinct inherited traits(c) his knowledge of biology(d) consideration of one character at one time. ADVERTISEMENTS: Answer and Explanation:1. (c): Consideration of one character at one time contribute to the success of Mendel. Mendel’s contribution was unique because of his methodological approach to a definite problem, use of clear cut variables and application of mathematics (statistics) to the problem. Using pea plants and statistical methods, Mendel was able to demonstrate that traits were passed from each parent inheritance of genes.2. Two linked genes a and b show 20% recombination, the individuals of a dihybrid cross between ++/+…

144 Questions with Answers and Explanations on “Animal Kingdom” for Biology Students.1. Animals/organisms floating on the surface of water are (a) plankton Image Source: sandmanhotelgroup.files.wordpress.com ADVERTISEMENTS: (b) pelagic(c) benthos(d) neritic. ADVERTISEMENTS: Answer and Explanation:1. (a): Plankton are minute pelagic organisms that drift or float passively with the current in a sea or lake. Plankton includes many microscopic organisms, such as algae, protozoans, various animal larvae, and some worms. Pelagic are the organisms that swim or drift in a sea or a lake. Benthos consists of flora and fauna occurring on the bottom of a sea or lake. Neritic zone is the region of the sea over the continental shelf, which is less than 200 metres deep.2. Organ Pipe Coral is (a) Tubipora ADVERTISEMENTS: (b) Astraea(c) Helipora(d) Fungia.Answer and Explanation:2. (a):…