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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.
| 2051. |
Question : Reproduction is one of the most important characteristics of living beings. Give three reasons in support of the statement. |
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Answer» SOLUTION :Reproduction is the process of producing one of our kinds and is one of the most important characteristics of living beings due to the following reasons: i] Reproduction HELPS to continue the population of a species. ii] With the process of reproduction being carried out, therisk of EXTINCTION of a species is minimized. iii] It helps in evolution of species by BRINGING about variations in their characters. |
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| 2052. |
Question : Reproduction is essential phenomenon that is not for survival of an individual. Explain. |
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Answer» Solution :The new organisms are PRODUCED from existing organisms of its own kind through reproduction. Unlike other essential LIFE processes such as NUTRITION, respiration, excretion, etc. reproduction is not necessary to maintain the life of an individual organism. Every organism has limited lifespan and each one will die. Organism produces new offspring of its kind through reproduction. Existing organisms CONTINUE this chain. Through the reproduction new members of each SPECIES are produced and continuity of life is maintained. |
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| 2053. |
Question : Reproduction is essential for living organisms in order to |
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Answer» maintain growth. |
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| 2054. |
Question : Reproduction in Amoeba is by : |
| Answer» Answer :A | |
| 2055. |
Question : Reproduction by production of bud is a common in yeast, hydra and bryophyllum. |
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| 2056. |
Question : Represent the phenotypic, genotypic ratio of both monohybrid cross and dihybrid cross in 72 generation of pea plants. |
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Answer» SOLUTION :MONOHYBRID cross: Phenotypic RATIO - 3:1 Genotypic ratio - 1:2:1 Dihybrid cross: Phenotypic ratio - 9: 3: 3: 1 Genotypic ratio - 1 :2: 2: 1 : 4: 1 : 2: 2: 1 |
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| 2057. |
Question : Represent fragmentation observed in spirogyra diagrammatically. |
Answer» SOLUTION :
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| 2058. |
Question : Represent a flow chart showing the postulates of Lamarckism. |
Answer» SOLUTION :
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| 2059. |
Question : Renaturation of DNA occurs at, |
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Answer» HIGH TEMPERATURE |
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| 2060. |
Question : Removal of soil particles from the land is called __________. |
| Answer» SOLUTION : SOIL EROSION | |
| 2061. |
Question : Regulator gene-i gene produces, |
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Answer» RNA POLYMERASE |
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| 2062. |
Question : Regular physical exercise is advisable for normal funtioning of human body. What are the advantages of practising exercise in daily life ? |
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Answer» Solution :The advantages of practising exercise in daily LIFE are as follows: (a) Practising exercise daily in our life make us feel happier. (b) It helps us with weight loss. (c) Exercises are GOOD for the muscles and bones. (d) It can increase our energy level. (e) It can reduce the risk of chronic pain and chronic diseases. (f) It can keep our skin, BRAIN, health and MEMORY. (g) Exercises can help with relaxation and QUALITY sleep. |
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| 2063. |
Question : Regulates growth and development of body. Fill a and b to make the correct sequence. |
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Answer» b- PITUITARY GLAND |
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| 2064. |
Question : Region of human body where poliomyelitis virus multiplies |
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Answer» MUSCLE cells |
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| 2065. |
Question : Reflex arc is formed by |
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Answer» receptor - brain –MUSCLES |
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| 2067. |
Question : Reduction is the elasticity of eye lens with age may result in |
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Answer» cataract |
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| 2068. |
Question : Redraw the picture given below. Identify the name indicated and label the parts. The part that adjusts its size as the intensity of light varies. |
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| 2069. |
Question : Redraw the picture given below. Identify the name indicated and label the parts. The part refracts light rays into the eye. |
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| 2070. |
Question : Redraw the picture given below. Identify the name indicated and label the parts. The part of Retina where plenty of photoreceptors are seen. |
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| 2073. |
Question : Red panda: Rare species :: Lion tailed monkey: ………………. |
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| 2074. |
Question : Red Data Book provides data on |
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Answer» biota of Red SEA |
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| 2075. |
Question : Red algae differ from green algae and brown algae in having |
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Answer» no flagellated stages in their life cycles |
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| 2076. |
Question : Recognize the following food chain- Describe the ecosystem to which it belongs. Grasshopper to snake to paddy field to Eagle to Frog. |
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Answer» Solution :(i) Paddy field `to`Grasshopper `to` Frog `to` Snake `to` Eagle. (II) This food chain BELONGS OT paddy field ECOSYSTEM. It is a man-made ecosystem. (iii) Paddy is cultivated on large scale in various states of south india. (iv) paddy field are frequently attacked by grasshoppers. (v) Similarly frogs are also present in large numbers in the mud of paddy fields to feed upon grasshoppers and snakes are also present therein to feed upon their favorite food. i.e frogs. (VI) Eagles feed on snakes which keeps a check on the number of snakes, in the ecosystem. |
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| 2077. |
Question :Recessive mutation are expressed normally |
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Answer» has to EXPRESS ALWAYS SINCE it is a mutation |
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| 2078. |
Question : Receptors of pressure present in deep layers of skin are |
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Answer» KRAUSE's END BULB |
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| 2079. |
Question : Receptor cells for balance and equilibrium in mammals are the |
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Answer» MALLEUS, INCUS and STAPES |
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| 2080. |
Question : Rearrange the following according to their ascending tropic level in a food chain. Hawk, grass, snake, rabbit |
| Answer» SOLUTION :GRASS `to` RABBIT `to` SNAKE `to` HAWK | |
| 2081. |
Question : Readthe followingpassageand answerthequestions thatfollow Rahiniand herparentswerewachingatelevisonprogramme. Anadvertisementflashedon thescreen whichwaspromotinguseof sanitary napkins . Rahini'sparentssuddenlychangedthe channel , butsheobjectedto herparentsand explained theneedandimportanceofsuchadvertisment .Whatis firstmenstruationcalled? whendoesit occur? |
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Answer» Solution :The first period or menstruation is a point in time, known as Menarche. It usually begins between 12 to 15 YEARS of age. (b) (a) The sanitary pad and TAMPONS should be wrapped properly and discarded because they can spread infections. (b) Sanitary pad or tampon should not be flushed down the toilet. (C) Napkin incinerators are to be used properly for disposal of used NAPKINS. (c) No, it was not correct. The parents and teachers have to create awareness among the school GIRLS about the use of Napkins and their proper disposal. Girls should be educated, and should know the importance of such advertisement in the Television |
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| 2082. |
Question : Rate of transpiration in a dorsiventral leaf is |
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Answer» GREATER at the UPPER surface |
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| 2083. |
Question : Rashmi lives alone in Delhi. Her house is near a main road where heavy traffic plies all day and night. The construction activities for building a huge commerical complex are also in full swing near her house. Rashmi had to go to America of six months. She was worried about her beautiful houseplants kept on terrace. She gave the keys of her house to a neighbour and requested her to water the plants daily. The neighbour kept her promise and watered the plants daily (because there was no rain at all during those six months). When Rashmi returned after six months, she found that most of the plants had pest infestations and diseases. The plants had become very weak and unhealthy. Rashmi could not understand why, even after regular watering, the plants were in a very bad shape. One day Rashmi's niece Laxmi, who is a student of class X, came to meet her. Rashmi told her problem to Laxmi. Laxmi examined the plants carefully and came to know what the problem was. She explained everything to Rashmi and gave advice to restore the good health of these plants. (a) What had happened to the plants kept on the terrace when Rashmi was away for six months ? (b) Which process in plants could not take place at optimal level due to the above happening ? Explain. (c ) Why had the plants become weak and caught pests and diseases ? (d) What advice was given by Laxmi to Rashmi to restore the good health of these plants ? (e) Which natural process/processes perform the similar functions which Rashmi was told to perform ? |
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Answer» Solution :(a) A lot of dust had deposited on both sides of leaves of plants and covered them. (b) The process of photosynthesis (food making) could not take PLACE at optimal level due to thick layer of dust on the leaves. This happened as follows : The layer of dust on the leaves blocks the sunlight and reduces the leaves' ability to carry out photosynthesis to make food for the plant. Even the stomata on the surface of leaves get blocked reducing the intake of carbon dioxide from surrounding air. This further RETARDS photosynthesis. (c ) Photosynthesis is the process by which plants make their own food. Since photosynthesis was reduced, the plants did not get sufficient food to remain healthy. The plants became weak and hence prone to pests and diseases. (d) Laxmi ADVISED Rashmi to wash the leaves of houseplants by spraying water on them, so as to remove the thick layer of dust from them. (e) (i) The rain USUALLY WASHES away the dust from the leaves of plants and trees and makes them dust-free. (ii) The fast blowing wind shakes the leaves of plants nad trees and also helps in removing dust from them. |
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| 2084. |
Question : Rare species |
| Answer» Solution :The organisms WHOSE NUMBER is considerably declined and may BECOME extinct very fast are called RARE SPECIES. | |
| 2085. |
Question : Rare species : Musk deer :: Indeterminate species :……… |
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| 2086. |
Question : Raphano brassica is a man-made tetraploid produced by colchicine treatment. |
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Answer» |
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| 2087. |
Question : Ranjeet has 3 daughters. His wife is pregnant again and is told by Ranjeet that if she does not give birth to son, she will be thrown out of the house. She is also asked to go for sonography and remove foetus if it is found to be female. Answer the questions based on this information. How can you counsel Ranjeet ? |
| Answer» Solution :MOTHER is not RESPONSIBLE for the sex of child but the sex of CHILDREN will be determined by what they inherit from their FATHER. | |
| 2088. |
Question : Ranjeet has 3 daughters. His wife is pregnant again and is told by Ranjeet that if she does not give birth to son, she will be thrown out of the house. She is also asked to go for sonography and remove foetus if it is found to be female. Answer the questions based on this information. Why is prenatal sex determination banned ? |
| Answer» Solution :Because this is misused by people who do not want a particular child and it LEADS to ILLEGAL sex-selective ABORTION of FEMALE foetuses. | |
| 2089. |
Question : Ranjeet has 3 daughters. His wife is pregnant again and is told by Ranjeet that if she does not give birth to son, she will be thrown out of the house. She is also asked to go for sonography and remove foetus if it is found to be female. Answer the questions based on this information. Which sex chromosome of Ranjeet was not used in case of birth of his 3 daughters ? |
| Answer» SOLUTION :Y-chromosome. | |
| 2090. |
Question : Ranjeet has 3 daughters. His wife is pregnant again and is told by Ranjeet that if she does not give birth to son, she will be thrown out of the house. She is also asked to go for sonography and remove foetus if it is found to be female. Answer the questions based on this information. Who is responsbile for the sex of the children ? - Ranjeet or his wife. |
| Answer» SOLUTION :RANJEET is RESPONSIBLE for the SEX of the CHILDREN. | |
| 2091. |
Question : Ranjeet has 3 daughters. His wife is pregnant again and is told by Ranjeet that if she does not give birth to son, she will be thrown out of the house. She is also asked to go for sonography and remove foetus if it is found to be female. Answer the questions based on this information. Is removing female foetus correct measure ? |
| Answer» SOLUTION :No. It WOULD DISTURB sex-ratio in HUMAN SOCIETY. | |
| 2092. |
Question : Raman's 50 year old ailing uncle Vinod was admitted to a hospital. The doctors performed many blood tests and found that the blood of Vinod contained some unwanted wastes in it. These wastes had accumulated in blood due to non-functioning of a pair of vital organs in the body of vinod. The doctors suggested two options for the treatment of Vinod so as to save his life. Raman is a student of class X who has studied various life processes in detail. So, he could easily make out the ailment his uncle wass suffering from. (a) What could be the pair of organs of Vinod which were not functioning properly ? Where are these organs located in the body ? (b) What is the function of these organs ? (c ) Name the major waste which is removed by these organs from the blood. (d) Name the ailment (or disease) Vinod is suffering from. (e) What could be the two options for the treatment of Vinod ? (f) What advice Raman could give to others so as to prevent such an ailment ? |
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Answer» Solution :(a) The pair of organs of Vinod which were not functioning properly are the two kidneys. The kidneys are bean-shaped organs towards the back of our body, just above the waist. The function of kidneys is to remove the poisonous substance urea, other WASTE salts, and excess water from the blood and excrete them in the form of a yellowish liquid called urine. (c ) Urea. (d) Vinod is suffering from 'kidney failure'. (e) The two options available to Vinod for the treatment of his ailment are : (i) DIALYSIS (in which the dirty blood of kidney patient containing unwanted wastes is cleaned periodically by passing through a kidney machine), and (f) Kidneys can usually be damaged by continued high blood pressure (called hypertension), and ALSO by very high blood sugar (called diabetes). So, the general advice GIVEN by Raman to others so as to prevent kidney ailment would be : (i) Keep your blood pressure under control. (ii)Keep your blood sugar (diabetes) under control. (iii) GET the kidney functioning test done from time to time. |
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| 2093. |
Question : Raju while cutting potatoes for preparing curry, sows a piece of potato in soil. What may happen to the piece of potato? |
| Answer» SOLUTION :It may germinate into a NEW plant if the POTATO piece sown contains the eye region. | |
| 2094. |
Question : Raju decides to prepare spongy dosa. He adds a spoon of yeast cells to the dosa batter. The dosa batter rises after about an hour. This is because |
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Answer» YEAST CELLS have increased in number |
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| 2095. |
Question : Rajesh eats neither meat nor animal products such as cheese, milk or egg. Which vitamin is most likely to be deficient in the diet of Rajesh? |
| Answer» Answer :B | |
| 2096. |
Question : Rahul and his classmates toured some of the villages in North Indian States during the summer holidays. They found that in this area there were many more boys than girls in the age group of up to 6 years. Rahul and his friends then went to a small Government Hospital just outside a village. The doctor told them that in this area the birth of a girld child is considered a burden on the family. So, every family in the village wants to have only boys (or sons). He said that people of the village are going to private clinics in cities for getting the pre-natal (before birth) determination of sex done on pregnant women and if the foetus is of a girl child, it is aborted. Due to this illegal practice of selective abortions, child sex ratio is declining at an alarming rate and has created many social problems. The doctor also told that in many households, the women are harassed and tortured for giving birth to a girl child. The village elders blame only the woman for great personal the girl child. The doctor said that they are trying to change the mind set of village people at great personal risk but it will take a lot of time to get rid of this social evil. (a) What term is used for the act of deliberately aborting the foetus if it is of a girl child ? (b) What is child sex ratio ? Why is it declining rapidly ? (c ) Why is the birth of a girl child considereda burden in the family ? (d) In our society, the woman (or wife) is blamed for giving birth to a girl child. Prove scientifically that it is actually the man (or husband) who is responsible for the birth of a girld child. (e) State an ill effect of this horrific practice of selective abortions in the long run. (f) How can this evil of killing girl child even before her birth can be prevented ? |
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Answer» Solution :(a) The act of deliberately aborting the foetus if it is of a girl child, is called FEMALE foeticide. (The deliberate termination of a woman's pregnancy is called abortion). (b) Child sex ratio is the number of girls per thousand boys in human population of an area between the age group of 0 to 6 years. Child sex ratio is declining rapidly due to female foeticide. (c ) The demand of dowry during the marriage of a girl is the main reason for thinking that the birth of a girl child is burden on the family. (d) Half of the man's sperms have X sex chromosomes whereas the other half sperms have Y sex chromosomes. On the other hand, all the ova (or eggs) of woman have only X sex chromosomes. Now, a girl child is conceived when the sperm of man carrying X chromosome fertilises the ovum (or egg) of woman carrying X chromosome.It is clear that man (or husband) is responsible for the birth of a girl child and not the wife (because only man has Y sex chromosome in half of his sperms which is required to have a male child or boy). (e) An ill effect of female foeticide in the long run is that sufficient number of young girls is not available in the area to marry off all the boys in this age group. Due to this shortage of girls, brides are even bought and sold for this purpose. Female foeticide can be prevented : (i) by strict implementation of laws toprohibit pre-natal determination of sex, to stop female foeticide and dowry system. (ii) by spreading awareness that no society can run or flourish WITHOUT girls. (iii) by providing FREE and compulsory education to girls and reservation in cetain professions (such as TEACHING) so that they can BECOME financially independent. |
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| 2097. |
Question : Radioactive pollution can cause tuberculosis. |
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| 2098. |
Question : Quinine the remedy for malaria isextracted from |
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Answer» BARK of Cinnamon |
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| 2099. |
Question : Question. The correct sequence of organs in the male reproductive system for transport of sperms is |
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Answer» TESTIS ➔ VAS DEFERENS ➔ URETHRA |
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| 2100. |
Question : Pyrenoid is found in one of the following organs on Spirogyra |
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Answer» nucleolus |
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