24277 + Interview Questions in Biology in Class 12 Page 464 InterviewSolution

23151.	Question : A plant has genotype TtRrGgPP. On selfing of this plant, what is the sum total of phenotypic categories ?
Answer» 8 16 4 27 Answer :B

Discussion

23152.	Question : A plant eaten by a herbivorous animal which in turn is eaten by a carnivorous animal forms a
Answer» Food WEB Food chain Food pyramid Food cycle SOLUTION :Food chain

Discussion

23153.	Question : A plant expressing a gene from another organism is
Answer» Transgenic Clone Soma CLONAL variant Transformed Answer :A

Discussion

23154.	Question : A plant character showing chloroplast inheritance ………
Answer» SOLUTION :VARIEGATED LEAVES in MIRABILIS JALAPA

Discussion

23155.	Question : A Plant called X possesses small flower with reduced perianth and versatile anther . The probableagent for pollination would be
Answer» water air butterflies beetles Answer :A

Discussion

23156.	Question : A plant brreder finds that genetic variation in a crop are completely used up and hence genetic variations are to be created for crop improvement . Suggest any one method for creating genetic variation .
Answer» ANSWER :MUTATION BREEDING

Discussion

23157.	Question : A plant breeder developed a hybrid sugarcane by grafting two differents varieties with desirable characters. The resultant hybrid showed as excellent growth and productivity with increased sucrosecontant compared to its parental forms. (i) What does this phenomenon refers to? (ii) How its condition can be maintained through further generation?
Answer» Answer :(i) HETEROSIS or Hybrid VIGOUR (ii) VEGETATIVE propegation is the best suited measure to MAINTAIN the vigourisity of hybrid.

Discussion

23158.	Question : A pistillate flower does not possees
Answer» Cocolla Androecium Calyx Gynostegium Answer :B

Discussion

23159.	Question : A piece of nucleic acid used to find the sequence of bases in a gene, by forming a hybrid with it, is called
Answer» retrogene vector carrier probe Answer :D

Discussion

23160.	Question : A piece of DNA, cut by restriction enzyme, forms bonds with other DNA molecules which have
Answer» methyl groups attached to them UNPAIRED bases PLASMID COMPONENTS been fragmented by the same RESTRICTION enzyme Answer :D

Discussion

23161.	Question : A piece of DNA is subjected to restriction enzyme digestion and the digested sample is electrophoresed. Which statement is correct in the above context?
Answer» SMALLEST FRAGMENT is PRESENT NEAR cathode Largest fragment is present near anode Largest fragment is present in the MIDDLE of the gel Smallest fragment is present near anode Answer :D

Discussion

23162.	Question : (a) Phytoplankton stage - Green algea (b) Submerged plant stage - Loose mud (c) Reed-swamp stage - Amphibious stage (d) Marsh ineadow stage - Shrub stage
Answer» ANSWER :MARSH MEADOW STAGE - SHRUB stage

Discussion

23163.	Question : A physisological xerophyte is
Answer» Salicornia Euphorbia Salvia Agave Answer :A

Discussion

23164.	Question : A phylum exclusively marine is:
Answer» Protozoans Coelenterata Echinodermata Porifera Answer :C

Discussion

23165.	Question : A photosynthesising plant is releasing ""^(18)Omore than the normal . The plant must have been supplied with
Answer» `O_3` `H_(2)O` with `""^(18)O` `CO_2` with `""^(18)O` `C_(6) H_(12)O_(6)` with `""^(18)O` Answer :B

Discussion

23166.	Question :A Photosystem contains
Answer» Pigments , ELECTRON acceptor & hydrogen acceptor PHOTONS , Protons, Pigments & hydrogen acceptor `PO_(4),ADP & H^(+)` Both (1) and (2) ANSWER :A

Discussion

23167.	Question : A: Photochemical smog should be eliminated to control air pollution. R: It is product of industries.
Answer» a. Both ASSERTION and Reason are TRUE and Reason is a correct EXPLANATION of the Assertion. b. Both Assertion and Reason are true but Reason is not a correct explanation of the Assertion. c. Assertion is true but Reason is false. d. Assertion is false but Reason is true. Answer :C

Discussion

23168.	Question : Aphenomenon where the third base of t-RNA at its 5 end can pair with a non-complementary base of m-RNA is called :
Answer» universality Colinearity degeneracy Wobbling Answer :D

Discussion

23169.	Question : A phenomenon which results in alteration of DNA sequences and consequently results in changes in the genotype and the phenotype of an organism sis
Answer» INDEPENDENT ASSORTMENT RANDOM gametic fusio Mutation Crossing over Answer :B

Discussion

23170.	Question : [A] :PGAL is isomerised to produce DHAP. [R]: isomerisation is catalysed by the enzyme phosphate triose isomerase.
Answer» If both A and R are TRUE and R is the CORRECT EXPLANATION of A If both A and R are true but R is not the correct explanation of A If A is true and R is false If both A and R are false Answer :A

Discussion

23171.	Question : A phenomenon in which a single gene affects multiple traits _______
Answer» Co-dominance Incomplete dominance Segregation PLEIOTROPY Solution :Pleiotropy

Discussion

23172.	Question : A person without thymus would not be able to
Answer» REJECT a TISSUE transplant Receive a tissue transplant Develop an INFLAMMATORY response Produce antibodies Answer :A

Discussion

23173.	Question : A person without A and B antigens can give blood to
Answer» Only O Only A and B Only AB A,B,AB and O Answer :D

Discussion

23174.	Question : A person with unknown blood group under ABO system, has suffered much blood loss in an accident and needs immediate blood transfusion. His one friend who has a valid certificate of his own blood type , offers for blood donation without delay. What would have been the type of blood group of the donor friend ?
Answer» TYPE B Type AB Type O Type A Answer :C

Discussion

23175.	Question :A person with unknown blood group under ABO system, has suffered much blood loss in an accident and needs immediate blood transfusion. His friend who has vaild certificate of his own blood type, offers for blood donation without delay. What would have been the type of blood group of the donor friend ?
Answer» TYPE B Type AB Type O Type A ANSWER :C

Discussion

23176.	Question : A person with sickle cell anemia is
Answer» more prone to MALARIA more prone to TYPHOID LESS prone to malaria less prone to typhoid Solution :A PERSON with sickle cell ANEMIA is less prone to malaria.

Discussion

23177.	Question : A person with sex chromosomes XXY suffers from :
Answer» Down's syndrome Turner's syndrome Sturge-Weber syndrome Klinefelter's syndrome Answer :D

Discussion

23178.	Question : A person with a coenzyme Q deficiency will have a defect in oxidative phosphorylation. Which of the following would be expected in this person?
Answer» ACCUMULATION of glucose accumulation of lactate high LEVELS of ATP fructose deficiency Answer :B

Discussion

23179.	Question : A person who is allergic to pulses was advised to take a capsule of Spirulina daily. Give the reasons for the advice.
Answer» Solution : Humans derive protein from PULSES. If a PERSON is ALLERGIC to pulses was ADVISED to TAKE a capsule of Spirulina daily because Spirulina is rich in protein.

Discussion

23180.	Question : A person who is eating vegetable is .........
Answer» Primary PRODUCTIVITY Primary CONSUMER Secondary consumer TERTIARY consumer Solution :Primary consumer

Discussion

23181.	Question : A person takes l00gm. carbohydrates, 60 gm protein and 30gm fat. Then how much amount of energy he get :
Answer» 400 KCal 910 Kcal 500 KCal 555 KCal Answer :B

Discussion

23182.	Question : A person suspected to have cancer had the affected tissue sent for biopsy. The results showed malignancy. Comment on it.
Answer» Solution : i. CARCINOMA : Cancer of epithelial cells. e.g. Skin cancer, breast cancer, lung cancer etc. ii. Sarcoma : Cancer of connective tissues. e.g. Bone cancer, cancer of lymph nodes etc. iii. MELANOMA: Cancer of MELANOCYTES (a type of skin cells) iii. Leukaemia : Cancer of WBC (blood cancer) iv. Lymphoma : Cancer of lymph nodes and spleen. Characteristics of cancer cells i. Cancer is the uncontrolled proliferation of cells. ii. They do not differentiate. iii. They grow and disorganise the tissues in which they occur. iv. They have large nucleus, NUCLEOLUS and more ribosomes. V. They lose adhesive junctions with other cells. vi. They have abnormal amount of DNA and hence are genetically abnormal.

Discussion

23183.	Question : A person suffers punctures in his chest cavity in an accident, without any damage to the lungs its effect could be :-
Answer» REDUCED BREATHING rate Rapid INCREASE in breathing rate No CHANGE in respiration Cessation of breathing Answer :D

Discussion

23184.	Question : A person suffering from diabetes insipidus shows ………………………
Answer» hyperglycemia hypoglycemia polyuria hypertension Answer :C

Discussion

23185.	Question : A person suffers punctures in his chest cavity in an accident, without any damage to the lungs, its effect could be
Answer» REDUCED breathing rate RAPID INCREASE in breathing rate no CHANGE in respiration cessation in breathing Answer :D

Discussion

23186.	Question : A person suffered a heart attack due a floating clot in his coronary artery. Name the bacterium that can save him .
Answer» SOLUTION :STREPTOCOCCUS

Discussion

23187.	Question : A person shows strong unusual hypersensitive reactions when exposed to certain substances present in the air. Identify the condition. Name the cells responsible for such reactions. What precaution should be taken to avoid such reactions.
Answer» Solution :Allergy. (It is the hypersensitive RESPONSE to the antigens) Mast Cells are responsible for such reactions. To avoid such reactions following precautions MUST be taken: (i) The use of drugs like ANTIHISTAMINE, adrenalin and steroids quickly reduce the SYMPTOMS of allergy.(ii) Avoid CONTACT with substances to which a person is hypersensitive.

Discussion

23188.	Question : A person shows unwelcome immunogenic reactions while exposed to certain substances.(a) Name this condition.(b) What common term is given to the substances responsible for this condition?C Name the cells and the chemical substances realesed which cause such reactions.
Answer» SOLUTION :(a)ALLERGY(B)Allergens © MAST cells-Histamine, SEROTONIN

Discussion

23189.	Question : A person suffering from a disease caused by Plasmodium experiences recurring chill and fever at the time when "_______" is released
Answer» heparin hirudin haemozoin histamine Answer :C

Discussion

23190.	Question : A person showing unpredicable moods outbursts of emotion, quarrelsome behaviour and conflicts with others is suffering from :
Answer» Schizophrenia Border-line PERSONALITY DISORDER (BPD) MOOD disorder Addictive disorder Answer :B

Discussion

23191.	Question : A person passes much urine and deink much water but his blood glucose level is normal. This condition may be the result of:
Answer» A reduction in INSULIN SECRETION from pancreas A reduction in VASOPRESSIN secretion from posterior pituitary A FALL in the glucose concentration in urine An increase in secretion of glucagon Answer :B

Discussion

23192.	Question : A person may die due to allergic reaction or an anaphylactic shock which is characterized by:
Answer» Constriction of peripheral BLOOD vessels Drastic INCREASE in blood volume Blood CAPILLARIES become highly permeable CAUSING loss of fluid from the blood All of the above Answer :C

Discussion

23193.	Question : A person is suffering from long standing constipation. It is likely that
Answer» has intestinal bacteria will get killed by poisonous gases produced by ACCUMULATED faeces he will suffer from piles he will feel severe pain in the stomach DUE to accumulated facces he will suffer from vitamin-B deficiency as its absorption is INHIBITED. Answer :B

Discussion

23194.	Question : A person likely to develop tetanus is immunised by administering
Answer» Dead GERMS Preformed antibodies WIDE SPECTRUM antibiotics Weakened germs Solution :Preformed antibodies

Discussion

23195.	Question : A person is undergoing prolonged fasting. His urine will be found to contain abnormal quantities of –
Answer» Fats Amino acids Ketone body Glucose Answer :C

Discussion

23196.	Question : A person is showing symptoms like increased BMR, heart rate, blood pressure and deposition of fats in eyes sockets . Name the disease he is suffering from .
Answer» SOLUTION :The above symptoms are SEEN in a person SUFFERING from EXOPHTHALMIC goiter or Grave's disease.

Discussion

23197.	Question :A person is suffering from frequent episodes of nasal discharge, nasal congestion, reddening of eyes and watery eyes. These are the symptoms of
Answer» CYANOSIS BRONCHITIS RHINITIS Bronchial CARCINOMA SOLUTION :Rhinitis

Discussion

23198.	Question : a person is injected with globulins against hepatitis. it is:
Answer» NATURALLY ACQUIRED active immunity naturally acquired passive immunity artificial acquired active immunity artificial acquired passive immunity Answer :D

Discussion

23199.	Question : A person is infected by HIV. How will you diagnose for AIDS ?
Answer» Solution :A simple BLOOD test is availble that can determine whether the PERSON has been infected with HIV.The ELISA test (ENZYME Linked Immunosorbent Assay) detects the presence of HIV antibodies .It is a preliminary test.Western BLOT test is more RELIABLE and a confirmatory test.It detects the viral core protiens.If both tests detect the presence of the antibodies ,the person is considered to be HIV positive.

Discussion

23200.	Question : A person injured in a road accident and requiring an urgent immune response was brought to a doctor. Define the type of immunity.
Answer» Solution :It is the development of RESISTANCE in the body by INJECTING ANTIBODIES against particular PATHOGEN.

Discussion

Explore topic-wise InterviewSolutions in .

Question : A plant has genotype TtRrGgPP. On selfing of this plant, what is the sum total of phenotypic categories ?

Question : A plant eaten by a herbivorous animal which in turn is eaten by a carnivorous animal forms a

Question : A plant expressing a gene from another organism is

Question : A plant character showing chloroplast inheritance ………

Question : A Plant called X possesses small flower with reduced perianth and versatile anther . The probableagent for pollination would be

Question : A plant brreder finds that genetic variation in a crop are completely used up and hence genetic variations are to be created for crop improvement . Suggest any one method for creating genetic variation .

Question : A pistillate flower does not possees

Question : A piece of nucleic acid used to find the sequence of bases in a gene, by forming a hybrid with it, is called

Question : A piece of DNA, cut by restriction enzyme, forms bonds with other DNA molecules which have

Question : A piece of DNA is subjected to restriction enzyme digestion and the digested sample is electrophoresed. Which statement is correct in the above context?

Question : (a) Phytoplankton stage - Green algea (b) Submerged plant stage - Loose mud (c) Reed-swamp stage - Amphibious stage (d) Marsh ineadow stage - Shrub stage

Question : A physisological xerophyte is

Question : A phylum exclusively marine is:

Question : A photosynthesising plant is releasing ""^(18)Omore than the normal . The plant must have been supplied with

Question :A Photosystem contains

Question : A: Photochemical smog should be eliminated to control air pollution. R: It is product of industries.

Question : Aphenomenon where the third base of t-RNA at its 5 end can pair with a non-complementary base of m-RNA is called :

Question : A phenomenon which results in alteration of DNA sequences and consequently results in changes in the genotype and the phenotype of an organism sis

Question : [A] :PGAL is isomerised to produce DHAP. [R]: isomerisation is catalysed by the enzyme phosphate triose isomerase.

Question : A phenomenon in which a single gene affects multiple traits _______

Question : A person without thymus would not be able to

Question : A person without A and B antigens can give blood to

Question : A person with sickle cell anemia is

Question : A person with sex chromosomes XXY suffers from :

Question : A person with a coenzyme Q deficiency will have a defect in oxidative phosphorylation. Which of the following would be expected in this person?

Question : A person who is allergic to pulses was advised to take a capsule of Spirulina daily. Give the reasons for the advice.

Question : A person who is eating vegetable is .........

Question : A person takes l00gm. carbohydrates, 60 gm protein and 30gm fat. Then how much amount of energy he get :

Question : A person suspected to have cancer had the affected tissue sent for biopsy. The results showed malignancy. Comment on it.

Question : A person suffers punctures in his chest cavity in an accident, without any damage to the lungs its effect could be :-

Question : A person suffering from diabetes insipidus shows ………………………

Question : A person suffers punctures in his chest cavity in an accident, without any damage to the lungs, its effect could be

Question : A person suffered a heart attack due a floating clot in his coronary artery. Name the bacterium that can save him .

Question : A person shows strong unusual hypersensitive reactions when exposed to certain substances present in the air. Identify the condition. Name the cells responsible for such reactions. What precaution should be taken to avoid such reactions.

Question : A person shows unwelcome immunogenic reactions while exposed to certain substances.(a) Name this condition.(b) What common term is given to the substances responsible for this condition?C Name the cells and the chemical substances realesed which cause such reactions.

Question : A person suffering from a disease caused by Plasmodium experiences recurring chill and fever at the time when "_______" is released

Question : A person showing unpredicable moods outbursts of emotion, quarrelsome behaviour and conflicts with others is suffering from :

Question : A person passes much urine and deink much water but his blood glucose level is normal. This condition may be the result of:

Question : A person may die due to allergic reaction or an anaphylactic shock which is characterized by:

Question : A person is suffering from long standing constipation. It is likely that

Question : A person likely to develop tetanus is immunised by administering

Question : A person is undergoing prolonged fasting. His urine will be found to contain abnormal quantities of –

Question : A person is showing symptoms like increased BMR, heart rate, blood pressure and deposition of fats in eyes sockets . Name the disease he is suffering from .

Question :A person is suffering from frequent episodes of nasal discharge, nasal congestion, reddening of eyes and watery eyes. These are the symptoms of

Question : a person is injected with globulins against hepatitis. it is:

Question : A person is infected by HIV. How will you diagnose for AIDS ?

Question : A person injured in a road accident and requiring an urgent immune response was brought to a doctor. Define the type of immunity.