Category: Nutrition

Nutrition may be defined as the science of food and its relationship to health. It is one of the most important elements of health care. Now a day’s greater emphasis is laid on nutrition to provide better health to the families and communities. image source: notizie.itUndernourishment and malnutrition lead to so many diseases like tuberculosis, goitre, anaemia, beri-beri, night blindness and infections of skin, gastro-intestinal and respiratory tract. ADVERTISEMENTS: The dietary factors play a major role in non-communicable diseases like heart disease, diabetes, obesity, hypertension, disorder of liver and gall bladder etc. Poverty, economic inability and illiteracy are the important causes of malnutrition. Therefore diseases are more common in poor people rather than economically better and educated people.Through centuries food has been recognized as an important constituent for human beings…

Q. 1. What are the three critical research areas of biotechnology? Ans. The critical research areas of biotechnology are: Image Source: frontiersin.orgResearch areas of bio-technology ADVERTISEMENTS: 1. Providing best catalyst:To provide best catalyst in the form of a microbe or pure enzyme, e.g. insulin.2. Creating optimal conditions: ADVERTISEMENTS: To create optimal conditions through engineering for a catalyst to act.3. Down stream processing:To provide down stream processing technologies to purify the protein or organic compound produced by the microbe.Q. 2. Compare and contrast the advantages and disadvantages of production of genetically modified crops. ADVERTISEMENTS: Ans. The production of the crops for high food production by traditional methods has its own problems.It needs the inputs of agrochemicals such as synthetic chemical fertilizers and pesticides to ensure the productivity.It has its limitations as…

20 Questions with Answers and Explanations on “Food Production” for Biology Students: Image Source: pnas.orgQ. 1. Name the fowl used for poultry. Ans. ADVERTISEMENTS: (1) Chicken(2) Duck(3) Turkey(4) Geese. ADVERTISEMENTS: Q. 2. How is inbreeding different from out breeding? Ans. In inbreeding, the breeding is between animals of the same breed whereas in out breeding the breeding is by crossing animals of different breeds.Q. 3. What does superior female mean in cow or buffalo? ADVERTISEMENTS: Ans. Superior female means it produces more milk per lactation period.Q. 4. What is superior male in cow or buffalo? Ans. Superior male means the bull which gives rise to superior progeny as compared to other bulls/males.Q. 5. How does inbreeding depression take place? Ans. Continued inbreeding (specially close breeding) leads to inbreeding depression. It…

21 Questions with Answers and Explanations on “Human Reproductions” for Biology Students: Image Source: online.science.psu.eduQ. 1. Mention the different parts of human male reproductive system. Ans. 1. Testes (1 pair), ADVERTISEMENTS: 2. Glands,3. Accessory ducts4. External genitalia. ADVERTISEMENTS: Q. 2. Mention the role of scrotum/scrotal sacs. Ans. 1. It holds the testis.2. Provides low temperature (2-2.5°c less) than the body.Q. 3. What is the number of testicular lobules and seminiferous tubules in each lobule in human testis? ADVERTISEMENTS: Ans. Testicular lobules-250 in each testis.Semineferous tubules in each lobule-1-3.Q. 4. Mention the cells that are present on inner layer of semineferous tubules. Ans. 1. Male germ cells (spermatogonia)2. Sertoli cells. Q. 5. What are these structures collectively called? Vasa efferentia, rete testis, epididymis and vas deferens. Ans. Human male sex accessory…

24 Questions with Answers and Explanations on “Ecosystem” for Biology Students: Image Source: sitemaker.umich.eduQ. 1. Mention any two examples of manmade ecosystem. Ans. (1) Crop fields ADVERTISEMENTS: (2) AquariumQ. 2. Mention the basic requirement for any ecosystem to function and sustain. Ans. Solar energy. ADVERTISEMENTS: Q. 3. Name the types of productivity and the organism responsible?Ans. Primary productivity— plants.Secondary productivity —consumers.Q. 4. Mention the raw material of decomposition. ADVERTISEMENTS: Ans. Detritus.Q. 5. Select the odd one out: (a) Fecal matter,(b) Dead leaves, (c) Thermocol, (d) Bark. Ans. (c) ThermocolQ. 6. Give an example to detritivore. Ans. Earthworm.Q. 7. Expand the term PAR. Ans. Photosynthetically Active Radiation.Q. 8. How much percentage of PAR is captured by the producers to produce food for entire world? Ans. 2%—10%Q. 9. Name the herbivores of…

Here is your essay on Biotic Community !All the living entities of an ecosystem form a single biotic component, the community. All the organisms of a community live together, share same habitat and influence each other’s life directly or indirectly.Various vital life processes such as growth, nutrition, reproduction and distribution depend very much upon the interac­tions between the individuals of same species (intra specific interac­tions), or between those of different species (inter specific interact­ions). Pollination, seed and fruit dispersal, symbiosis, grazing, predation, parasitism, competition are some of such interactions. image source: upload.wikimedia.org ADVERTISEMENTS: Community ecology deals with the ecology of the groups of different kinds of populations in the area. While, population eco­logy is the study of individuals of the same species where proces­ses as aggregation, inter-dependencies between individuals and…

Here is your Essay on Growth of Plant Ecology in India !In India, the earliest contributions to the modern plant ecology were mainly from some forest officers who presented purely descriptive accounts of forests. First forest conservation efforts were made in 1864 by Sir Dietrich Brandis, the Inspector General of forests and first Indian Forest Act came into existence in 1885. image source: c1.staticflickr.com ADVERTISEMENTS: In 1893, Voelcker, a German agricultural scientist, submitted a report to Indian Government regarding the role of forests vis-a-vis agriculture and he stressed the need for formulating a forest policy with a definite bias for serving agricultural interests more directly than before.Accordingly, Indian Government issued a resolution dated 19th October, 1894 regarding her policy about the manage­ment of Indian forests on scientific lines (Sagreiya, 1967).Early…

Free Essay on the Population Policy of India (679 Words)Population dynamics is a important matter and it crucially affects the developmental prospects of nation as well as the health and well-being of its people. This is particularly true of developing countries which have to face special challenge in this regard. It is hardly surprising therefore that India has had an official population policy for more than a half century. In fact, India was perhaps the first country to explicitly announce such policy in 1952. Image Source: veganfestival.co.uk ADVERTISEMENTS: The population policy took the concrete form of the National family planning programme. The broad objectives of this programme have remained the same to try to influence the rate and pattern of population growth in socially desirable directions.The most important objective was…

Essay on the Classification types and Function Placenta! Image Source: humpath.comPlacenta is an organic connection between the foetus and uterine wall, for physiological exchange between foetus and mother’s blood. The placenta develops at the point of implantation. At first, the trophoblast cells absorb food and oxygen from the increasingly vascularised uterine lining. ADVERTISEMENTS: The allantois grows out from the embryo and fuses with the chorion to form the allanto – chorion which will develop into the placenta. The allantois gives rise to the umbilical cord which contains blood vessels connecting foetus and placenta. 1. Classification of Placenta: Three main factors involved in the classification of mammalian placenta are –1. Nature of extraembryonic membranes involved.2. Distribution of vill (finger like projection, formed from the outer surface of chorion) and shape of…