InterviewSolution
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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.
| 1951. |
Question : Single circulation is shown in which group ? |
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Answer» SHARKS, whales |
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| 1952. |
Question : State True or False. Since the life originated on the earth, the evolution is a continuous, non-stop process. |
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Answer» |
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| 1953. |
Question : Simple polyembryony is found in |
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Answer» CYCAS only |
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| 1956. |
Question : Sight of delicious food usually makes mouth watery, it is a |
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Answer» HORMONAL RESPONSE |
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| 1957. |
Question : Sickle cell anaemia is due to mutation caused by |
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Answer» insertion |
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| 1958. |
Question : Shylesh has some pet animals at his ho.me. He has few rabbits too. One day while feeding them he observed something different with the teeth. He asked his grandfather, why is it so? What would have been the explanation of his grandfather? |
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Answer» Solution :The explanation of the GRANDFATHER would have been as follows: Teeth are HARD bone like structures, used to cut, tear and grind the food. There are incisors, canines, PREMOLARS and molars teeth are seen. Canines are absent. Something different with the teeth is the gap between incisors and premolar, which is called Diastema. It helps in mastication and CHEWING the food. |
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| 1959. |
Question : Shyam had just recovered from dengue fever for which he was confined to bed for many days. He was really fed up and wanted to go out with his friend Ram. So, Ram and Shyam went out into city forest for a walk. While walking in the city forest, Shyam fell down and got a cut on his would stop automatically after some time. But this did not happen. The bleeding from cut went on continuously. After some time, Shyam also started having breathing difficulty and he now wanted to go back home. Ram held Shyam firmly by the arm to give support and both came out of the city forest. Ram then hailed a taxi and took Shyam straight to the hospital. He told everything to doctors. After performing some tests quickly, doctors gave blood transfusion to Shyam. His parents were also informed. (a) Which component was deficient in the blood of Shyam which led to too much bleeding from the cut ? (b) Could the deficiency of this component of blood have been caused by dengue ? (c ) What is the function of this component in our body ? (d) What could be the probable reason for the breathing difficulty of Shyam ? Explain. (e) What is the cause of dengue disease : virus, bacteria or protozoa ? Name the carrier which spreads dengue. (f) What values are displayed by Ram in this episode ? |
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Answer» Solution :(a) Shyam's BLOOD was deficient in platelets. (b) Yes, dengue reduces the blood platelet count of a person drastically. (c ) Platelets HELP in the coagulation of blood (or clotting of blood) in a cut. It is due to the presence of platelets that the blood coming out of a cut becomes semi-solid and plugs the cut (or seals the cut) due to which bleeding stops. (d) The deficiency of haemoglobin could be the probable cause of Shyam's breathing difficulty. This can be explained as FOLLOWS : Haemoglobin present in blood carries oxygen and hence is essential for breathing.When a lot of blood was lost by Shyam through the cut, then the amount of blood and hence that of haemoglobin in the body became less. This less amount of haemoglobin carried less oxygen into the lungs and caused breathing difficulty. (e) The cause of dengue disease is a virus (called dengue virus). It is spread by Aedes mosquitoes. (f) The values displayed by RAM in this episode are (i) Awareness or knowledge (that too much blood loss from the body could endanger the life of Shyam) (ii)Concern to save life of his friend (by taking him straight to HOSPITAL), and (iii) Correct decision-making skill(of not wasting precious time in going back home first). |
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| 1960. |
Question : Show inheritance of two characters over two generations by making a cross between round and yellow seeded plant (RRYY) with wrinkled green seeded plant (rryy). |
Answer» SOLUTION :
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| 1961. |
Question : Short notes on Nervous System of Leech. |
| Answer» Solution :The CENTRAL Nervous System of Leech consists of a nerve ring and a paired ventral nerve cord. The nerve ring SURROUNDS the Pharynx and is FORMED of Suprapharyngeal ganglion (brain), Circum PHARYNGEAL connective and Subpharyngeal ganglion. The Subpharyngeal ganglion lies below the Pharynx and is formed by the fusion of four pairs of Ganglia. | |
| 1962. |
Question : Shivani visited her village with her parents during the winter holidays. When she went to the fields outside the village, she saw a farmer spraying pesticides over the standing crops in the fields. When she looked at the container of pesticide lying on the ground, she knew that it was a pesticide which had been banned from use in most of the countries. The farmer was spraying pesticide taking anyprecautions. Shivani asked the farmer to cover his nose and mouth properly with a cloth while spraying the pesticide. She also asked him not to spray too much pesticide on the crops because it is harmful to human beings, other animals and aquatic life in the long run. Shivani educated the farmer about the various harmful effects of this pesticide. (a) What are pesticides ? Why are pesticides sprayed over the crops ? Which pesticide was being sprayed by the farmer on the crops ? (b) (i) At which trophic level pesticides enter a food chain ? (ii)At which trophic level of food chain, the concentration of pesticides is the maximum ?(c ) What name is given to the process of concentration of pesticides in the body of living organisms at each trophic level of a food chain ? (d) Why do pesticides get accumulated at each trophic level in a food chain ? (e) Why are the harmful effects of the pesticide being sprayed by this farmer ? (f) What values are displayed by Shivani in this episode ? |
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Answer» Solution :(a) Pesticides are the poisonous chemical substances which are sprayed over the standing crop plants to protect them from pests (harmfull small animals) and diseases. The farmer was spraying DDT pesticide on the crops. (b) (i) The pesticides enter a food chain at the first trophic level called producer level (which are the plants). (ii) The concentration of pesticides is the maximum at the highest trophic level of organisms in a food chain (which occurs on the EXTREME RIGHT side in a food chain). (c ) Biological magnification. (d) Pesticides get accumulated at each trophic level in a food chain because they are non-biodegradable chemical substances (which cannot be decomposed naturally by various micro-organisms present in soil and water bodies). (e) DDT damages liver, nervous system and reproductive system in human BEINGS. DDT can also CAUSE various types of cancers, including liver cancer. (f) The values displayed by Shivani are (i) Awareness (that DDT is harmful to human beings and other animals) (ii) Concern for the farmer (that DDT may not enter his respiratory system and damage it), and (iii) Concern for the environment (because DDT is non-biodegradable pesticide and persists in the soil and water bodies for a very long time). |
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| 1963. |
Question : Shibu's father is a wrestler and has a robust body. His son was thin a] Is it true a wrestler's son should also have heavy muscles? b] What type of character is it - acquiredor inherited? c] If you are shibu's friend how will you convince him that the is normal? |
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Answer» Solution :a) It is not true. Wrestler.s SON need not necessarily have HEAVY muscles. b] Having heavy muscles is an acquired trait. Heavy muscles are developed by regular exercising. c] Shibu.s FRIEND can convince him by telling him that traits like heavy muscles are not inherited but are acquired in the LIFETIME. So he can start exercising on a regular basis to be like his father. |
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| 1965. |
Question : Sexual stages in the life cycles of fungi are also termed as |
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Answer» PERFECT STAGES |
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| 1966. |
Question : Sexual reproduction, which involves meiosis help in recombination of. . . .. . . . . . during gametic fusion |
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Answer» |
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| 1967. |
Question : Sexual reproduction results in _____________ variations. |
| Answer» SOLUTION :more/greater/higher NUMBER of | |
| 1968. |
Question : Sexual reproduction involves the fusion of two deploid gametes to form a haploid individual (Zygote). |
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Answer» |
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| 1970. |
Question : Sexorgansproducegameteswhicharediploid . |
| Answer» SOLUTION :Correct Statement: SEX organs produce GAMETES, which are HAPLOID. | |
| 1971. |
Question : Sex of a child is determined by |
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Answer» DIET of mother. |
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| 1972. |
Question : Sex determination in certain animals can also be due to ______ |
| Answer» SOLUTION :temperature/environment | |
| 1973. |
Question : Sex chromosomes may be found in |
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Answer» UNISEXUAL PLANT |
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| 1974. |
Question : Sewage infection of water will be demonstrated bu cysts of |
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Answer» ENTAMOEBA |
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| 1975. |
Question : Severe famine of Bengal of 1942-43 was due to the destruction of rice crop by a fungus called |
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Answer» Helminthosporium |
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| 1976. |
Question : Sertoli cells secrete a hormone called |
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Answer» Gonadotropin |
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| 1977. |
Question : Sequentially arrange the events that occur in biogas plant. p. activity of anaerobic microbes q. The slurry left behind is used as manure r. cow-dung and water is mixed and this slurry is fed into the digester s. Methane gas is generated t. Breakdown of complex compounds of the cow-dung slurry. |
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Answer» <P> SOLUTION :`R RARR p rarr t rarr s rarr Q` |
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| 1978. |
Question : Senthil has high blood pressure, protruded eyeball and an increased body temperature. Name the endocrine gland involved and hormone secretion responsible for this condition |
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Answer» Solution :The endocrine gland, is Thyroid gland, and the hormones secreted are Triiodothyronine `(T_3)` and Tetraiodothyronine or THYROXINE `(T_4)` . The excess secretion of the Thyroid hormone LEADS to Grave.s disease. The symptoms are protrusion of eye balls (exopthalmia), increased metabolic rate, high body TEMPERATURE, profuse SWEATING, loss of body weight and nervousness. |
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| 1980. |
Question : Semicircular canals in vertebrate are responsible for |
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Answer» detection of change of ATMOSPHERIC pressure |
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| 1981. |
Question : Semi-dwarf varieties were introduced in rice.This was made possible by the presence of dwarrfing gene in rice.Name this dwarfing gene. |
| Answer» SOLUTION :The DWARFING GENE is Sd.l. | |
| 1982. |
Question : Self-pollination means |
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Answer» germination of POLLENS within the anther |
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| 1984. |
Question : Selection of …………………………….. by environmental factors forms the basis for evolutionary processes. |
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Answer» |
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| 1985. |
Question : Select the statements that describe characteristics of genes. (i) Each chromosome has only one gene (ii) Genes are located on a particular chromosome. (iii) Genes are specific sequence of DNA. (iv) Genes do not code for proteins. |
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Answer» (i) and (II) |
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| 1986. |
Question : Select the set of homologous organs from the following |
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Answer» LIMBS of BIRDS and REPTILES |
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| 1987. |
Question : Select the nucleotide that is present only in RNA from the following: |
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Answer»
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| 1988. |
Question : Select the mismatched pair in the following and correct it. I. Parasite - Consumers which obtain liquid food nutrients from host organisms. II.Agro-ecosystem - A man-made ecosystem Ill. UV radiation- Causes skin cancer in human beings. IV: Ecosystem - Physical components of environment. |
| Answer» SOLUTION :IV is a MISMATCHED pair. Ecosystem consists of an interaction of physical components of environment and BIOTIC components. | |
| 1989. |
Question : Select the incorrect statement: |
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Answer» Frequency of certain genes in a population CHANGE over several generations resulting in evolution |
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| 1990. |
Question : Select the incorrect statement. |
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Answer» Lean and thin parents MAY have fat progeny. |
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| 1991. |
Question : Select the group which shares maximum number of common characters |
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Answer» two individuals of a SPECIES |
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| 1992. |
Question : Select the correct statements regarding cerebrum. |
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Answer» CENTRE of THOUGHT, intelligence , memory and imagination |
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| 1993. |
Question : Select the correct statement: |
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Answer» TENDRIL of a pea plant and phylloclade of OPUNTIA are HOMOLOGOUS |
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| 1994. |
Question : Select the correct pair from the following options : |
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Answer» |
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| 1995. |
Question : Select the correct option for components of an ecosystem(i) Grass, Air, Rabbit (ii) Soil, Sun, Tiger (iii) TV antenna, Road, Bird (iv) Sky, Aeroplane, Bird |
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Answer» (i) and (II) |
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| 1996. |
Question : Select the correct alternative from those given below each question: In which of the following, the new combinations of genes formed ?a.Vegetative reproductionb.Asexual reproductionc.Sexual reproductiond.Budding |
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Answer» VEGETATIVE REPRODUCTION |
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| 1997. |
Question : Select the activity which regulates the size for the pupil according to the.intensity of light. |
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Answer» The action of ciliary muscles. |
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| 1998. |
Question : Select from the following substances which have posed a threat to the environment : Aerosols, consumers, bacteria, CFCs. |
| Answer» SOLUTION : ACROSOLS, CFCS. | |
| 1999. |
Question : Seeta and Geeta are neighbours in the same colony where they live. Seeta's father and Geeta's father both work in the same company and earn equal salary (or equal money). Seeta has one brother whereas Geeta has four brothers and sisters. Geeta is very bright in her studies. Earlier Geeta used to study in one of the top city schools alongwith Seeta but now her father has shifted Geeta to an ordinary school. Seeta's family has a new car whereas Geeta's family has an old scooter. Seeta and her brother wear beautiful clothes whereas Geeta's siblings wear ordinary clothes. Seeta's mother is very healthy whereas Geeta's mother usually suffers from one ailment or another. Seeta's home atmosphere is relaxed and happy whereas there is always some tension in Geeta's house. (a) What do you think is the main reason for the lower living standard of Geeta's familythan Seeta's family (though their incomes are equal) ? (b) What is the most probable reason for shifting Geeta from one of the top schools to an ordinary school (though she is very brightin studies) ? (c ) What type of measures do you think were not taken by Geeta's parents at appropriate times in the past for limiting the size of their family ? (d) What factor is responsible for the poor health of Geeta's mother (whereas Seeta's mother is very healthy) ? What values are displayed by Seeta's parents in this episode ? |
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Answer» Solution :(a) The main reason for the comparatively lower living standard of Geeta's family is their large (family consisting of 7 persons (father, mother and 5 children) whereas Seeta's family has only 4 persons (father, mother and 2 children). Due to this, in Geeta's family, the father's INCOME is used for the upkeep of 7 persons whereas in Seeta's family, an equal income is AVAILABLE for just 4 persons. (b) The most probable reason for shifting Geeta from a top school to an ordinary school is that due to large number of children, her father cannot afford much higher schoold fee in a top school. Geeta's parents did not take family PLANNING measures (or birth control measures) to control the size of their family by having less number of children at the appropriate times in the PAST. (d) Every pregnancy puts a lot of demands (nutritional, PHYSICAL and emotional) on the body of the mother. So, the frequent pregnancies (to have a large number of children) have spoiled the health of Geeta's mother. On the other hand, just two pregnancies (to have only two children) have kept Seeta's mother in good health. (e) Seeta's parents displayed the values of (i) Awareness of birth control measures (to limit the size of their family) (ii) Concern for the health of mother of children (iii) Desire to provide best possible education and facilities to children, and (iv). National responsibility (of not adding too much to country's population). |
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| 2000. |
Question : Seedsarethe product ofasexualreproduction . |
| Answer» SOLUTION :Correct Statement: SEEDS are the product of Sexual REPRODUCTION. | |
