24277 + Interview Questions in Biology in Class 12 Page 148 InterviewSolution

7351.	Question : surrogate mother is used for
Answer» INDUCTION of lactation artificial insemination future MOTHER with transplanted EMBRYO artificial INSEMINATED female Answer :C

Discussion

7352.	Question : The alternative name for cork cambium is_____
Answer» ANSWER :PHELLOGEN

Discussion

7353.	Question : The ______ allele representing the original phenotype is_________ type and the allele ______ is generally the_______ type/allele.
Answer» FUNCTIONAL, dominant, modified, recessive UNMODIFIED, WILD, modified, mutant modified, wild unmodified, recessive Both (1) & (2) Answer :D

Discussion

7354.	Question : Suprachiasmatic nucleus is influenced by
Answer» Cochiea Vestibular apparatus Hypophysis Epiphysis cerebri Answer :D

Discussion

7355.	Question : The allergies and bronchial affictions in some people often leading to chronic respiratory disorders. It is due to
Answer» POLLEN of parthenium pollen of hibiscus pollen of Acasia both a and c Answer :D

Discussion

7356.	Question : Suppose you have a crop plant with high protein quality, but prone to diseases. If you want to bring the high protein quality and disease resistance in one plant, what type of plant breeding method do you follow? Why?
Answer» SOLUTION :Hybridisation. Because by cross hybridising two parents (one with high protein quality and another with disease RESISTANCE) to produce HYBRIDS, the DESIRED characters of the parents genetically COMBINE in one plant.

Discussion

7357.	Question : The allele for black hair colour (B) is dominant over the allele for white hair colour (b) in Guinea pigs. A test cross between a black male and a white female produced a litter of five balck and one white Guinea pigs. The genotype of ht father is
Answer» UNKNOWN, DUE to the SMALL SAMPLE size B/B B/b b/b Answer :C

Discussion

7358.	Question : Suppose you are developing a new drug, and have found that when it is administered in humans there is a substantial increase in the volume of urine produced. When you administer antidiuretic hormone (ADH or vasopressin) at the same time, the volume of urine returns to normal. Which hypothesis best fits these observations ? The new drug ?
Answer» BLOCK the RECEPTORS for ADH on the COLLECTING of the kidney. Blocks the release of ADH from the pituitary Mimics the ACTION of ADH Decreases blood pressure Answer :2

Discussion

7359.	Question : The all-or-none principle statesthat:
Answer» The properties of an ACTION POTENTIAL are INDEPENDENT of the STRENGTH of the depolarising stimulus All stimuli will produce action potentials All graded potentials will generate action potential Any cell membrane can generate and propagate an action potential if stimulated to threshold Answer :D

Discussion

7360.	Question : The all animals of which option belong to same phylum ?
Answer» TAENIA, FASCIOLA and Pennatula Ascaris, WUCHERERIA and Nereis Nereis, PHERETIMA and Laccifer Locusta, LIMULUS and Laccifer Answer :D

Discussion

7361.	Question : Suppose you are exploring the biodiversity of your village or town. How will you measure the biodiversity index?
Answer» Solution :i. Identification of SPECIES ii. Total NUMBER of organisms III. FORMULA - `("Number of species")/("Total number of individuals")`

Discussion

7362.	Question : Suppose you are the Secretary of your school Science Club and you are invited by the local body member to give a talk on ''biodiversity'' for the literacy mission. Prepare a note to be presented.
Answer» Solution :Important of wildlife, conservation, damages. The TERM .wildlife. has been defined by various naturalists and biologists. Wildlife refers to living organisms - plants, animals and microorganisms other than the cultivated plants and domesticated animals. In Webster.s Dictionary ..Wildlife is defined as living things that are neither human nor domesticated especially mammals, birds and fishes hunted by man... IMPORTANCE of wildlife Wildlife has great importance to MANKIND due to its many values. i. Ecological value : Destruction of wildlife may upset the ecological balance in the nature. II. Commerical value : Fur bearing animals, ivory of elephants, horns of rhinoceros, musk deer glands etc. have high international value. iii. Game value : Has great game value. iv. SCIENTIFIC value : Wildlife acts as a source of gene pool or gene bank for breeding programmes in agriculture, animal husbandry, fisheries etc. v. Aesthetic value : Due to their beauty and appeal to humans they have high aesthetic value. vi. Medicinal value : A large number of drugs are obtained from wild plants and animals which cure human sufferings.

Discussion

7363.	Question : The alien species introduced into Lake Victoria that was responsible for the extinction of cichlid fishes is
Answer» AFRICAN catfish Water HYACINTH CARROT grass Nile perch Answer :D

Discussion

7364.	Question : Suppose that a female undergoes sex reversal to become a functional male and is then mated to a normal Female. Determine the expected F1 sex ratios from such matings in species with XY method of sex determination
Answer» 2 FEMALE:1 male 1 female: 2 male All female All male ANSWER :C

Discussion

7365.	Question : Suppose the Government of Kerala sanctioned the project of a multinational company in Eravikulam National Park area offering an employment of 20,000. As the member of a state suffering from unemployment and as a student of biology, what is your opinion? Justify.
Answer» Solution :As a member of the STATE suffering from UNEMPLOYMENT I will give FULL support to the project of the multinational company. But as a student of biology I will go for the SUSTAINABLE development. I will favour the company if they will not alter the biodiversity of that area i.e. the trees, animals etc LIVING in that area. They should be eco-friendly also. i.e. there must be no pollution (sound, water, air), use only bio-degradable substances etc. If there is any breach in the contract the Govt. must have the authority to close that factory. Then only I will support this.

Discussion

7366.	Question : The algal component of a lichen is mycobiont.
Answer» a. True b. False Answer :PHYCOBIONT

Discussion

7367.	Question : Suppose by representing your school you are participating in an inter school debate competition, organised by the Department of Forests. The topic is ''Biodiversity Conservation in India is upto the marl''. By supporting the topic or opposing the topic, write any four arguments you are going to raise.
Answer» Solution :`` In my view the Biodiversity Conservation in India is not upto the MARK. `` We are not controlling pollution. `` Population growth MAY lead to shortage on LAND for habitation. `` Not giving awareness to people. `**` Strict LAW is there, but is not implemented.

Discussion

7368.	Question : The aleurone layer is
Answer» Proteinaceous in nature A PART of embryo Found in gram seeds Inner covering of ENDOSPERM FUSED with embryo Answer :A

Discussion

7369.	Question : Suppose a foreign company applies for patent for a medicine made from turmeric. Turmeric is indigenously used in India as a medicine for skin diseases. a. What is your opinion against such a theft of knowledge? b. What do you call such an unauthorised use of bioresources?
Answer» SOLUTION :a. It is our TRADITIONAL knowledge and should be PREVENTED from exploita tion by OTHERS. b. It is biopiracy

Discussion

7370.	Question : The Air Prevention and Control of Pollution Act came into force in(A) 1990(B) 1975(C) 1981(D) 1985
Answer» 1990 1975 1981 1985 ANSWER :C

Discussion

7371.	Question :The aleurone layer in maize grain is specially rich in
Answer» STARCH LIPID AUXINS Proteins Answer :D

Discussion

7372.	Question : Supporting roots of maize stem, which arise from the lower nodes are called
Answer» Pneumatophores Prop roots Stilt roots Contractile roots Answer :A

Discussion

7373.	Question : The aiims and objectives, of Genetic Engineering Approval Committee are I) To permit the use of genetically modified organisms and their product for commercial applications. II) To adopt the procedures for restriction, production and application of GM organisms. III) Approval to conduct large scale field trails and release of transgenic crops in the environment. Which of the statements are given above are correct?
Answer» I and II I and III II and III I, II and III Answer :D

Discussion

7374.	Question : Superiority of hybrid over its parents is called hybrid vigour(heterosis). It is maximum in corn or maize. It was given by
Answer» Camerarius Shull Bateson and Punnett Fairchild Answer :B

Discussion

7375.	Question : The agriculture sector of India employs about
Answer» 50 PER cent of the POPULATION 70 per cent of the population 30 per cent of the population 60 per cent of the population Solution :The agriculture sector of INDIA EMPLOYS about 60 per cent of the population.

Discussion

7376.	Question :Supply of oxygen to the biogas plant will have
Answer» POSITIVE effect Negative effect No effect None of these ANSWER :B

Discussion

7377.	Question : The age pyramid with broad base indicates
Answer» high percentage of old INDIVIDUALS LOW percentage of YOUNG individuals a STABLE population high percentage of young individuals Answer :D

Discussion

7378.	Question : Superiority of hybrids over parents only in vegetative growth not in yield. This phenomenon is termed as …………. .
Answer» Euheterosis Balanced euheterosis Luxuriance Mutational heterosis Answer :C

Discussion

7379.	Question : The agent of AIDS disease is
Answer» BACTERIUM FUNGUS nematode virus Answer :D

Discussion

7380.	Question : Superiority of hybrid over the parents.
Answer» SOLUTION :Heterosis/Hybrid VIGOUR.

Discussion

7381.	Question : The age of rock is calculated on the basis of
Answer» TYPE of fossils-present Number of STRATA present Amount of THORIUM present Amount of LEAD present Answer :D

Discussion

7382.	Question : Superior males of one breed are mated with superior females of another breed is known as……..
Answer» INTERSPECIFIC hybridization Cross-breeding Out-breeding MOET Answer :C

Discussion

7383.	Question : Supercoils formed during DNA replication are released by the enzyme helicase.
Answer» True False Answer :Topoisomerase/gyrase

Discussion

7384.	Question : The age of oldest sedinentary rock is about
Answer» 2.7-3.2 BILLION YEARS 3.2-4.2 billion years 4.2-5.2 billion years 5.2-6.2 billion years Answer :A

Discussion

7385.	Question : The age of pyramid with narrow base indicates
Answer» HIGH NUMBER of young individuals LOW number of young individuals high number of OLD individuals low number of old individuals ANSWER :B

Discussion

7386.	Question : Sunken stomata occurs in
Answer» XEROPHYTES Hydrophytes Mesophytes Opsanophytes ANSWER :A

Discussion

7387.	Question : The age of oldest rock is about
Answer» 3.3-3.6 BILLION YEARS 4.2-4.6 billion years 4.6-5.6 billion years 5.6-7.0 billion years ANSWER :A

Discussion

7388.	Question : Superioority of the hybrid over both the parents in respect of one or more characters.
Answer» ANSWER :HETEROSIS

Discussion

7389.	Question : The age of fossils of dryopithecus on the geological time scale is:
Answer» `75xx10^6` YEARS BACK `2.5xx10^6` years back `25xx10^6` years back `50xx10^6` years back Answer :C

Discussion

7390.	Question : Super ovulatin and embryo transplantation are meant for improving
Answer» human RACE LIVESTOCK poultry plants Answer :B

Discussion

7391.	Question : The age of fossils can be determined by
Answer» ELECTRON microscope weighing the FOSSILS CARBON DATING analysis of bone Solution :carbon dating

Discussion

7392.	Question : The affinity of haemoglobin for oxygen increases due to
Answer» Increase of CARBON dioxide in the blood and decrease in the pH Increase of temperature and decrease in the PARTIAL PRESSURE of carbon dioxide Decrease in the partial pressure of carbon dioxide and rise in pH Decrease of temperature and increase in partial pressure of carbon dioxide Answer :C

Discussion

7393.	Question : Sunken stoma occur in
Answer» XEROPHYTES HYDROPHYTES MESOPHYTES Opsanophytes ANSWER :A

Discussion

7394.	Question :The afferent and efferent vessels in kidney are
Answer» ARTERIAL in NATURE VENOUS in nature One is arterial and the other is venous NONE of the above Answer :A

Discussion

7395.	Question : Sunderbans National Park is found in ……………………
Answer» ASSAM WEST BENGAL MADHYA Pradesh Bihar SOLUTION :West Bengal

Discussion

7396.	Question : The aestivation in petals of lady finger and Calotropis plants are respectively :-
Answer» A & D B & A D & A D & B ANSWER :B

Discussion

7397.	Question : Sunderban contains mainly:
Answer» MANGROOVE plants alpine trees thick forest grass Answer :A

Discussion

7398.	Question : The adenosine triphosphate (ATP) gain during glycolysis, connecting link and Krebs' cycle respectively are ……… .
Answer» `8, 6, 24` `8, 24, 6` `24, 8, 6` `6, 8, 24` ANSWER :A

Discussion

7399.	Question : Sunder Lal Bahuguna was the leader of which one of the following movements?
Answer» Silent VALLEY MOVEMENT Bishnoi (JAIPUR) Movement Chipko Movement None Of The Above Answer :None of these.

Discussion

7400.	Question : The adaptation of Self-pollination is(A) Dichogamy(B) Self sterility(C) cleistogamy(D) herkogamy
Answer» Dichogamy Self sterility cleistogamy herkogamy Answer :C

Discussion

Explore topic-wise InterviewSolutions in .

Question : surrogate mother is used for

Question : The alternative name for cork cambium is_____

Question : The ______ allele representing the original phenotype is_________ type and the allele ______ is generally the_______ type/allele.

Question : Suprachiasmatic nucleus is influenced by

Question : The allergies and bronchial affictions in some people often leading to chronic respiratory disorders. It is due to

Question : Suppose you have a crop plant with high protein quality, but prone to diseases. If you want to bring the high protein quality and disease resistance in one plant, what type of plant breeding method do you follow? Why?

Question : The allele for black hair colour (B) is dominant over the allele for white hair colour (b) in Guinea pigs. A test cross between a black male and a white female produced a litter of five balck and one white Guinea pigs. The genotype of ht father is

Question : The all-or-none principle statesthat:

Question : The all animals of which option belong to same phylum ?

Question : Suppose you are exploring the biodiversity of your village or town. How will you measure the biodiversity index?

Question : Suppose you are the Secretary of your school Science Club and you are invited by the local body member to give a talk on ''biodiversity'' for the literacy mission. Prepare a note to be presented.

Question : The alien species introduced into Lake Victoria that was responsible for the extinction of cichlid fishes is

Question : Suppose that a female undergoes sex reversal to become a functional male and is then mated to a normal Female. Determine the expected F1 sex ratios from such matings in species with XY method of sex determination

Question : Suppose the Government of Kerala sanctioned the project of a multinational company in Eravikulam National Park area offering an employment of 20,000. As the member of a state suffering from unemployment and as a student of biology, what is your opinion? Justify.

Question : The algal component of a lichen is mycobiont.

Question : The aleurone layer is

Question : Suppose a foreign company applies for patent for a medicine made from turmeric. Turmeric is indigenously used in India as a medicine for skin diseases. a. What is your opinion against such a theft of knowledge? b. What do you call such an unauthorised use of bioresources?

Question : The Air Prevention and Control of Pollution Act came into force in(A) 1990(B) 1975(C) 1981(D) 1985

Question :The aleurone layer in maize grain is specially rich in

Question : Supporting roots of maize stem, which arise from the lower nodes are called

Question : Superiority of hybrid over its parents is called hybrid vigour(heterosis). It is maximum in corn or maize. It was given by

Question : The agriculture sector of India employs about

Question :Supply of oxygen to the biogas plant will have

Question : The age pyramid with broad base indicates

Question : Superiority of hybrids over parents only in vegetative growth not in yield. This phenomenon is termed as …………. .

Question : The agent of AIDS disease is

Question : Superiority of hybrid over the parents.

Question : The age of rock is calculated on the basis of

Question : Superior males of one breed are mated with superior females of another breed is known as……..

Question : Supercoils formed during DNA replication are released by the enzyme helicase.

Question : The age of oldest sedinentary rock is about

Question : The age of pyramid with narrow base indicates

Question : Sunken stomata occurs in

Question : The age of oldest rock is about

Question : Superioority of the hybrid over both the parents in respect of one or more characters.

Question : The age of fossils of dryopithecus on the geological time scale is:

Question : Super ovulatin and embryo transplantation are meant for improving

Question : The age of fossils can be determined by

Question : The affinity of haemoglobin for oxygen increases due to

Question : Sunken stoma occur in

Question :The afferent and efferent vessels in kidney are

Question : Sunderbans National Park is found in ……………………

Question : The aestivation in petals of lady finger and Calotropis plants are respectively :-

Question : Sunderban contains mainly:

Question : The adenosine triphosphate (ATP) gain during glycolysis, connecting link and Krebs' cycle respectively are ……… .

Question : Sunder Lal Bahuguna was the leader of which one of the following movements?

Question : The adaptation of Self-pollination is(A) Dichogamy(B) Self sterility(C) cleistogamy(D) herkogamy

Question : The __ allele representing the original phenotype is_ type and the allele is generally the_____ type/allele.