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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 14051. |
Question : List the attributes that populations but not individual possess. 1. Population density.(2) Natiality or birth rate.(3) Mortality or death rate.(4) Population growth.(5) Sex ratio.(6) Age distribution.(7) Population dispersal |
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Answer» SOLUTION :Microbes are able to survinve at high TEMPERATURE through (i) Occurrence of branched chain of lipids in the cell membrane that reduce fluidity of cell membrane. (ii) Development of heat tolerant enzyme which deals with the high temperature. |
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| 14052. |
Question : List the advantages of recombinant insulin. |
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Answer» Solution :Insulin used for diabetes was earlier extracted from pancreas of slaughtered cattle and pigs. Insulin from an animal source, though caused some patients to develop allergy or other types of reactions to the foreign protein. Insulin consists of two short polypeptide chains : chain A and chain B, that are linked together by disulphide bridges. In mammals, including humans, insulin is synthesised as a pro-hormone (like a pro-enzyme, the pro-hormone also needs to be processed before it becomes a fully mature and functional hormone) which contains an extra stretch called the C peptide. This C peptide is not present in the mature insulin and is removed during maturation into insulin. The main CHALLENGE for production of insulin using rDNA techniques was GETTING insulin assembled into a mature form. In 1983, Eli Lilly an American company prepared two DNA sequences corresponding to A and B, chains of HUMAN insulin and introduced them in plasmids of E. coli to produce insulin chains. Chains A and B were produced separately, extracted and combined by creating disulphide BONDS to form human insulin. There is no need of animals to be sacrificed. The cost of Humulin is not very high. |
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| 14053. |
Question : List the advantages of biogas plants in rural areas. |
| Answer» SOLUTION :Biogas is used for cooking and lighting . The TECHNOLOGY of biogas PRODUCTION was developed in INDIA mainly due to the efforts of INDIAN Agricultural Research Institute (IARI) and Khadi and Village Industries Commission (KVIC). | |
| 14054. |
Question : List some symptoms of Ascariasis. |
| Answer» Solution :Enteritis, PNEUMONIA, hepatitis, appendicitis, BLOCKAGE of intestine and nervous problems like COMMA, CONVULSIONS, etc. | |
| 14055. |
Question : List some of the plants is given below :- (i) Marchantia (ii) Sphagnum (iii) Pteris (iv) Polytrichum (v) Pinus (vi) Cycas (vii) Castor In how many above plants both male and female gametophyte do not have an independent free living existence. |
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Answer» four |
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| 14056. |
Question : List some names of infectious Disease. |
| Answer» Solution :Small POX, ringworm, chickenpox, influenza, measles, LEPROSY, choera, typhoid, plague, DYSENTERY, diphtheria, AIDS, HEPATITIS etc. | |
| 14057. |
Question : It is believed that the first organisms, which inhabited earth's surface were |
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Answer» MIXOTROPHS |
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| 14058. |
Question : List out two sub-aerial modification with example. |
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Answer» SOLUTION :Stolon-Eg.: Fragaria SUCKER - E.g.: CHRYSANTHEMUM |
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| 14059. |
Question : Define:- Geitonogamy |
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Answer» FERTILISATION of ANOTHER flower by Pollen GRAIN of the some plant |
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| 14060. |
Question : List out two sub-aerial stem modifications with example. |
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Answer» SOLUTION :Runner-Centella ASIATICA Stolon-Fragaria and MENTHA. |
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| 14061. |
Question : It is an interaction between two organisms in which one organism gets benefited and other harmed.a)Scavengingb)Symbiosisc)Commensalismd)Parasitism |
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Answer» SCAVENGING |
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| 14062. |
Question : List out the various causes for biodiversity losses. |
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Answer» Solution :The major causes for biodiversity decline are: • Habitat loss, fragmentation and destruction (affects about 73% of all species). • Pollution and pollutants (smog, pesticides, herbicides, oil slicks and GHGs). • Climate change. • Introduction of alien/exotic species. • Over exploitation of resources (poaching, indiscriminate cutting of trees, over fishing, hunting and mining). • Intensive agriculture and aquacultural practices. • Hybridization between native and non-native species and loss of native species uthaunke and volcanoes). Industrialization, Urbanization, infrastructure development, Transport - Road and Shipping activity, communication towers, dam construction, unregulated TOURISM and monoculture are COMMON area of SPECIFIC THREATS. • Co-extinction |
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| 14063. |
Question : List the uses of transgenesis. |
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Answer» Solution :Transgenesis is a powerful tool to study gene expression and developmental PROCESSES in higher organisms ansgenesis helps in the improvement of genetic characters in animals.Transgenic animals serve as good models for understanding human diseases which help in the investigation of new treatments for diseases.Transgenic models exist for many human diseases such as cancer, Alzheimer.s, cystic fibrosis, RHEUMATOID arthritis and sickle cell anemia. Transgenic animals are used to produce proteins which are important for medical and pharmaceutical applications Transgenic mice are used for testing the safety of vaccines. Transgenic animals are used for testing toxicity in animals that carry genes which make them sensitive to toxic substances than non-transgenic animals exposed to toxic substancesand their effects are studied. Transgenesis is important for improving the quality and quantity of milk, meat, EGGS and wool PRODUCTION in addition to testing DRUG resistance. |
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| 14064. |
Question : List out the sources of noise pollution. |
| Answer» Solution :Vehicle engines, air horns, audio video systems, trains, low flying aircrafts, factory machines, SIRENS, MOTORS, drillers and crushers, compressor machines, crackers, explosives and MODERN supersonic transports are the common SOURCES of noise pollution. | |
| 14065. |
Question : List out the significance of ploidy. |
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Answer» Solution :`**` Many polyploids are more vigorous amid more ADAPTABLE than diploids. `**`Many ormamental plants are autotetraploids and have larger FLOWER and longer flowering DURATION than diploids. `**` Autopolyploids usually have increase in fresh weight due to more water content. `**` Aneuploids are useful to determine the PHENOTYPIC effects of loss or GAIN of different chormosomes. `**` Many angiosperms are allopolyploids and they play a role in an evolution of plants. |
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| 14066. |
Question : It is a threelayered thick structure. |
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Answer» OVARY |
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| 14067. |
Question : List out the salient features of double helix model of DNA. |
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Answer» SOLUTION :Salient features of the double helix structure of DNA are as follows. DNA is made up of two poly nucleotide chains, where the back bone is constituted by sugar-phosphate and the bases projeets inside. The two chains have anti parallel polarity. It MEANS one chain has the polarity `5.rarr3.` and the other has `3.rarr5.`. The bases in the two strands are paired through hydrogen bond forming base pairs. The bases show complementary base pairing Adenine always pairs with thymine with double bonds and Guanine pairs with cytosine with triple bonds. The two strands are coiled in a right handed fashion, the PITCH of the helix is 3.4nm and there are 10 base pair in each turn. The distance between a base pair in a helix is 0.34nm. And the diameter of the DNA molecule is 20nm. The PLANE of one base pair stacks over the other in double helix. This confirms stability of the helical structure. The double helix has two grooves i.e major groove and a minor groove. 
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| 14068. |
Question : It is a digramatic presenation of ovum which surrounded by few sperms, choose the correctoption about A, B, and C :- |
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Answer» |
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| 14069. |
Question : It is a first chemical which form in earth |
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Answer» water |
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| 14070. |
Question : List out the new breeding techniques involved in developing new traits in plant breeding . |
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Answer» Solution :In the milestones of plant breeding methods Genetic Engineering, Plant tissue culture, Protoplasmic fusion or somatic hybridisation, Molecular marking and DNA finger PRINTING are some of the modern plant breeding tools used to improve the crop varieties. NBT - New Breeding TECHNIQUES. NBT are a collection of methods that could increase and accelerate the development of new traits in plant breeding. These techniques often involve genome editing, to modify DNA at specific locations within the plants to produce new traits in crop plants. The various methods of achieving these changes in traits include the FOLLOWING. (i) Cutting an d MODIFYING the genome during the repair process by tools like CRISPR/Cas. (ii) Genome editing to introduce changes in few base pairs using a technique called Oligonucleotide-directed mutagenesis (ODM). (iii) Transferring a gene from an identical or closely related species ( cisgenesis). (IV) Organising processes that alter gene activity without altering the DNA itself( epigenetic methods). |
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| 14071. |
Question : List out the major gases seem to be found in the primitive earth. |
| Answer» Solution :`CO_(2), NH_(3), UV` and WATER VAPOUR | |
| 14072. |
Question :It is a family planning method to prevent transport of gamete cell |
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Answer» IUDS |
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| 14073. |
Question : What is ozone depletion. |
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Answer» Solution :The main ozone depletion effects are: • Increases the incidence of cataract, throat and lung irritation and aggravation of asthma or emphysema, SKIN cancer and diminishing the FUNCTIONING of immune system in human beings. • Juvenile mortality of animals. • Increased incidence of mutations. • In plants, photosynthetic chemicals will be affected and therefore photosynthesis will be inhibited. Decreased photosynthesis will result in increased atmospheric `CO_2`resulting in global warming and also shortage of food leading to food crisis. • Increase in temperature changes the climate and rainfall pattern which may result in flood /DROUGHT, sea water rise, imbalance in ecosystems AFFECTING flora and fauna |
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| 14074. |
Question : It is a effect of water logging in the soil : |
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Answer» INHIBITS the growth of crops. |
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| 14075. |
Question : Name any four green house gases. |
| Answer» SOLUTION :a) `CO_2`B) CFCs c) Methane d) NITROUS oxide | |
| 14076. |
Question : It is a diagrammatic sectional view of male reproductive system, In which identify common duct which forms from the fusion of duct of seminal vesicle and vasdeferens |
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Answer» A |
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| 14077. |
Question : List out the functions of tapetum. |
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Answer» Solution :(i) It supplies nutrition to the DEVELOPING microspores. (ii) It contributes sporopoleenin through ubisch bodies THUS plays an important role in pollen wall formation. (iii) The pollenkitt MATERIAL is contributed by tapetal CELLS and is later transferred to the pollen surface. Exine proteins responsible for 'rejection reaction' of the stigma are present in the cavities from tapetal cells. |
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| 14078. |
Question : It is a common practice to undertake desilting of the overhead water tanks. What is the possible source of silt that gets deposited in the water tanks? |
| Answer» SOLUTION :The soil particles carried by WATER from the source of supply LIKE DEEP borewells, rivers etc gets deposited in the OVERHEAD tanks. | |
| 14079. |
Question : List out the function of tapetum . |
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Answer» Solution :`**` It supplies nutrition to the developing microspores. `**` It contributes sporopollenin through ubisch bodies THUS plays an important role in pollen WALL formation. `**` The pollenkit material is CONTRIBUTED by tapetal CELLS and is later transferred to the pollen surface. `**` Exine proteins responsible for " .rejected rejection . if the stigma are PRESENT in the cavities of the exine These proteins are derived from tapetal cells. |
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| 14080. |
Question : List out the four types of binary fission. |
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Answer» SOLUTION :(i) Simple irregular binary FISSION (ii) TRANSVERSE binary fission (iii) Longitudinal binary fission (IV) Oblique binary fission |
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| 14081. |
Question : It has got local effect on living of uterus . |
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Answer» THIRD level IUDS |
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| 14082. |
Question : It is a common practice to plant trees and shrubs near the boundary walls of buildings. What purpose do they serve ? |
| Answer» Solution :The plants growing near the boundary wall act (i) As barriers for SOUND POLLUTION (ii) ALSO act as DUST catchers. | |
| 14083. |
Question : List out the effects of fire to plants. |
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Answer» Solution :EFFECTS of fire: Fire has a direct lethal EFFECT on plants. urning scars are the suitable places for the entry of PARASITIC fungi and insects. it brings out the ALTERATION of light, rainfall, nutrient cycle, fertility of soil, pH, soil fora and fauna. Some fungi which grow in soil of burnt areas are called pyrophilous. Example: Pyronema confuens. |
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| 14084. |
Question : It has been recorded that the temperature of the earth's atmosphere has increased by 0.6^(@) C. (a) What has caused this increase? (b) Explain its consequences. |
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Answer» Solution :(a) INCREASE in level of GREENHOUSE gases causing global WARMING. (b) POLAR caps and glaciers will melt, RISE in sea level, mutation of DNA are some consequences. |
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| 14085. |
Question : List the effects of air pollution. |
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Answer» Solution :• Affects all organisms as they depend on the atmosphere for respiration. • Causes irritation in the throat, nose, lungs and eyes. It causes breathing problems and aggravates existing health conditions such as emphysema and asthma. • Contaminated air reduces the body.s defense mechanism and decreases the body.s capacity to FIGHT other infections in the RESPIRATORY system. • Frequent exposure to polluted air increases the RISK of cardiovascular diseases. Breathing air that is filled with fine particulate matter can induce HARDENING of the arteries, triggering cardiac arrhythmia or even a heart attack. • People who exercise outdoors can sometimes be susceptible to adverse effects of air pollution because it involves deeper and faster breathing. Hence it is advisable to walk or jog in the MORNINGS in places with ample tree cover. • Gas leaks can be lethal or affect the quality of air in the affected area. • CO in the atmosphere interferes with O, transport since haemoglobin has greater affinity for carbon monoxide. At low concentration it causes headache and blurred vision. In higher concentration, it can lead to coma and death. |
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| 14086. |
Question : It has beenrecordedthat the temperatureof theearth'satmospherehas increasedby 0.6_c a) what has causedthis increased ?b) Explainits consequence . |
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Answer» Solution :a) Increase in THELEVEL ofgreen housegasescause global warming B) 1)POLAR ice capsand glaciers will MELT 2) rise in sea LEVEL |
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| 14087. |
Question : Listthe attributes thatpopulationsbut notindividuals posses. |
| Answer» SOLUTION :Population density, Birth RATE, Death rate, Age DISTRIBUTION and Population dispersion | |
| 14088. |
Question : It has been recorded that the temperatureof the earth's atmosphere has in creasedby 0.6^(@)C . a. Whathas caused this increase ? b. Explainits consquences. |
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Answer» b.Therisein temperatureis leadingto deleteriouschanges in the enviromentand results in odd CLIMATICCHANGES ,thus leadingto increasedmelting of polarice caps as well as of otherplaces like the Himalayan SNOW caps . This will RESULT in a rise in sea levelthat can submergemany costalareas. |
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| 14089. |
Question : List out the chemical methods of wastewater treatment. |
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Answer» Solution :Chemical METHODS of WASTEWATER treatment include: • Generation of insoluble solids. • PRODUCE an insoluble gas. • Produce biologically degradable substances from a non-biodegradable SUBSTANCE. • Oxidize or reduce to produce a non-objectionable substance. |
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| 14090. |
Question : It control access to jointly managed forest. |
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Answer» JOINT MANAGEMENT policy |
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| 14091. |
Question : What are the causes of infertility in human beings? |
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Answer» Solution :Causes for male infertility: (i) Undescended TESTS and swollen veins in scrotum (ii) Underdeveloped testes (iii) Tight clothing increases the temperature in scrotum and affect sperm production. (iv) Autoimmune response against own sperm. (v) Usage of alcohol, tobacco, marijuana DRUGS etc. Causes for female infertility:(i) Malformation of cervix or fallopian tubes. (ii) Inadequate nutrition at puberty. (iii) LOW body fat (anorexia = psychological eating disorder due to fear of gaining weight). (iv) Pelvic Inflammatory Disease (PID), UTERINE disorders, endometriosis. (v) underdeveloped ovaries. (vi) Developing antibodies against sperm. Common Causes for both the sexes:(i) Tumours in pituitary or sex organs (ii) Inherited mutation of hormone synthesizing genes (iii) Long term stress (iv) Ingestion of toxins (Cadmium) & drugs (v) Injuries to gonads (vi) Ageing |
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| 14092. |
Question : List out the benefits of recombinant vaccines. |
| Answer» Solution :Vaccines produced by recombinant techniques have definite ADVANTAGES LIKE producing target proteins, long lasting immunity and trigger IMMUNE response only against specific pathogens with less TOXIC effects. | |
| 14093. |
Question : It concerns with valuable food stuffs universally consumed by man. |
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Answer» Wheat |
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| 14094. |
Question :List out the anthropogenic sources of Nitrous oxide. |
| Answer» Solution :Man-made sources include NYLON and NITRIC acid production, use of fertilizers in AGRICULTURE, manures cars with catalytic CONVERTER and burning of organic matter. | |
| 14095. |
Question :It a solution at atmospheric pressure has solute potential –15 pascals then :- |
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Answer» Its water potential will ALSO be –15 PASCALS |
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| 14096. |
Question : List out the adaptation of fish to survive in aquatic environment. |
| Answer» Solution :Fishes possess FINS for LOCOMOTION, STREAMLINED body (aerodynamic) sensory lateral line system, GILLS for respiratory PURPOSE and air sacs for floatation | |
| 14097. |
Question : List out chemical alarm signals produced during inflammation. |
| Answer» SOLUTION :SEROTONIN ,HISTAMINE and PROSTAGLANDINS. | |
| 14098. |
Question : isotopes used for proving for semiconservative replication of DNA are |
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Answer» `N^14` and `P^31` |
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| 14099. |
Question : List out any two effects of loss of bio diversity. |
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Answer» Solution :a) Decrease plant PRODUCTION b) Less resistance to ENVIRONMENTAL DISTURBANCES such as drought c) Increased variability in certain ecosystem PROCESSES such as - PRODUCTIVITY, water use, pest and disease cycles. |
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| 14100. |
Question : List out any four clinical symptoms of Kilnefelter's syndrome. |
| Answer» SOLUTION :Gynaecomastia, HIGH pitched voice, under DEVELOPED genetalia and tall with long limbs. | |