24277 + Interview Questions in Biology in Class 12 Page 334 InterviewSolution

16651.	Question : Halophiles, thermoacidophiles and methanogens :-
Answer» Are ancient bacteria Survive in EXTREME conditions Have a complex CELL WALL and cell membrane All of these Answer :D

Discussion

16652.	Question : Hallucinations begin to appear with a water loss of
Answer» 1.5 litres 3.0 litres 4.0 litres 6.0 litres Answer :C

Discussion

16653.	Question : Half of the pelvic girdle is termed as _________ .
Answer» ANSWER :Os-innominatum

Discussion

16654.	Question : Half inferior ovary occurs in the flowers of
Answer» MUSTARD Guava Cucumber Plum Answer :A

Discussion

16655.	Question : Haldane's effect explains
Answer» FORMATION of SODIUM BICARBONATE formation of carbaminohemoglobin dissociation ofCO_2from hemoglobin in the lungs all of the above Answer :C

Discussion

16656.	Question : Haldane described 'Hot dilute soup' in his theory. Describe how this soup led to formation of some important molecules.
Answer» SOLUTION :(1) The primitive sea CONTAINING molecules of organic SUBSTANCES without free oxygen was. described as 'hot dilute soup or primitive broth' by Haldane. He proposed the theory of chemical EVOLUTION. (2) According to this theory, the chemical evolution took place in following steps: (a) Origin of earth and its primitive atmosphere. (b) Formation of ammonia, water and methane. These molecules dissolved in rain water and formed the seas. (c) Then synthesis of simple organic compounds took place, followed by (d) formation of complex organic compounds such as nucleic acids. (3) The early molecules underwent chemical reactions such as condensation, POLYMERIZATION, oxidation and reduction. (4) The biologically important molecules such as monosaccharides, amino acids, purine, pyrimidine, fatty acids and glycerol were formed due to these reactions, utilizing the sources of energy on the primitive earth. (5) Since oxygen was lacking, there was no degradation. Enzymes were also absent and hence there was formation of complex molecules in the hot diluts soup. (6) This further led to the formation of precells or protobiont. These aggregates were called coacervates by Oparin. This further gave rise to first cells on the earth.

Discussion

16657.	Question : Hairpin model of t-RNA
Answer» SOLUTION :

Discussion

16658.	Question : Hair cells on the 'Crista' receive the stimuli related to
Answer» SMELL Vision Change in BODY POSITION Hearing Answer :C

Discussion

16659.	Question : Haemophilia, Sickle cell anaemia and Phenyl ketonurea are Mendelian disorders.Which one of the above is an example of inborn error of metabolism ? Mention the cause of the disorder.
Answer» Solution :Phenyl ketoneuria AUTOSOMAL recessive trait in which lack of enzyme to CONVERT phenyl alanine to tyrosine/Accumulation of phenyl PYRUVIC ACID in brain and excreted through time.

Discussion

16660.	Question : Haemophilia is transmitted from normal carrier female to male progeny because it is
Answer» X-linked DOMINANT trait X-linked RECESSIVE trait A recessive AUTOSOMAL trait Y-linked dominant trait Answer :B

Discussion

16661.	Question : Haemophilia, Sickle cell anaemia and Phenyl ketonurea are Mendelian disorders.What do you mean by Mendelian disorder ?
Answer» SOLUTION :MENDELIAN disorder, determined by ALTERATION or mutation in the SINGLE gene/point mutation/gene mutation.

Discussion

16662.	Question : Haemophilia is more common in males because it is a
Answer» Recessive CHARACTER CARRIEDBY Y - CHROMOSOME Dominant character carriedby Y - chromosome Dominant traitcarriedby X - chromosome Recessive TRAIT carried by X-chromosome ANSWER :D

Discussion

16663.	Question : haemophilia is due to:
Answer» factor-VI factor-VII factor-VIII factor-IX Answer :C

Discussion

16664.	Question :Haemophilia is a sex-linked recessive disorder of humans. The given pedigree chart shows the inheritance of haemophilia in one family. Study the pattern of inheritance and answer the questions given.(a) Give all the possible genotypes of the members 4, 5 and 6 in the pedigree chart. (b) A blood test shows that the individual 14 is a carrier of haemophilia. The member number 15 has recently married the member numbered 14. What is the probability that their first child will be a haemophilic male?
Answer» Solution : (a) 4 is carrier of HAEMOPHILIA `(XX^h)` 5 is haemophilic `(X^h Y)` 6 is normal (XY) (b)The probability of the first child being haemophilic MALE is 25%. 50% of the first child being male and its 50% of becoming haemophilic `(XX^hxxXY)`

Discussion

16665.	Question : Haemophilia is
Answer» A.deficiency of VITAMIN K B. infections diseases C.chromic DISORDER D. genetic disorder SOLUTION :genetic disorder

Discussion

16666.	Question : Haemophilia in man is due to
Answer» sex-linked INHERITANCE sex LIMITED inheritance sex-influenced inheritance PRIMARY non-disjunction Answer :A

Discussion

16667.	Question : haemophilia in human being is
Answer» SEX linked sex limited Autosomal recessive Autosomal dominant Answer :B

Discussion

16668.	Question : Haemophilia B is otherwise called what disease ?
Answer» ANSWER :CHRISTMAS

Discussion

16669.	Question : Haemophilia and Thalassemia both are examples of Mendelian order, but show difference in their inheritance pattern. Explain how.
Answer» SOLUTION : HAEMOPHILIA is a sex-linked DISORDER whereas THALASSEMIA is an autosomal recessive disorder.

Discussion

16670.	Question : Haemophiliaand sickle - cellAnaemia
Answer» SOLUTION :

Discussion

16671.	Question : Haemolytic jaundice is due to a dominant gene but only 10% of the people develops this disease.A heterozygous male marries a homozygous normal woman.What proprtion of the children in population would be expected to have this disorder ?
Answer» `1//5` `1//2` `1//10` `1//20` ANSWER :D

Discussion

16672.	Question : Haemophila -B is due to the deficiency of
Answer» ANTI HAEMOPHILIC globulin plasms THROMBOPLASTIN component Plasma thromboplastin antecedant Tissue thromboplastin Answer :B

Discussion

16673.	Question : Haemolytic disorder of newborn occurs when an Rh negative mother undergues second pregnancy and father is Rh positive. This can be avoided by
Answer» Injection of Rh POSITIVE blood into the Rh NEGATIVE mother Injection of Rh antigen in MOTHERS immediately after birth Injection of anti Rh antibodies during PREGNANCY or immediately after birth None of the above Answer :C

Discussion

16674.	Question : Haemolymph in cockroach is devoid of
Answer» plasma haemocytes amino acids RESPIRATORY pigment Solution :Blood in COCKROACH has no ROLE in respiratory gas EXCHANGE.

Discussion

16675.	Question : Haemoglobin-oxygen dissociation cUJve is 0
Answer» Hyperbolic SIGMOID STRAIGHT CONSTANT Answer :B

Discussion

16676.	Question : Haemoglobin is a type of
Answer» CARBOHYDRATE vitamin skin pigment respiratory pigment Solution :(d) Haemoglobin (Hb) is a proteinaceous respiratory pigment MADE up of a protein called globin with IRON `[Fe^(2+)]` containing PORPHYRIN as prosthetic group. It bind to oxygen reversibly.

Discussion

16677.	Question : Haemoglobin is dissolved in blood plasma of
Answer» FROG RABBIT COCKROACH EARTHWORM ANSWER :D

Discussion

16678.	Question : Haemoglobin is:
Answer» Vitamin Skin pigment Blood carrier Respiratory pigment Answer :D

Discussion

16679.	Question : Haemoglobin has greater affinity for
Answer» `O_2` CO `CO_2` `O_3` ANSWER :B

Discussion

16680.	Question : Haemoglobin breakdown occurs in
Answer» Liver Kidney Lungs Heart Answer :A

Discussion

16681.	Question : Haemoglobin acts as a buffer due to the presence of
Answer» Lysine Histidine Glutamine ASPARTIC acid Answer :B

Discussion

16682.	Question : Haemodialysis is done to treat patient for failure of _____ organ.
Answer» ANSWER :KIDNEY

Discussion

16683.	Question : Haemocyanin pigment is found in
Answer» Insecta Annelida NEMATODA Crustacea Answer :D

Discussion

16684.	Question : Haemocyanin associated with
Answer» MG FE MN CU ANSWER :D

Discussion

16685.	Question : Haemocoel occurs in
Answer» Porifera Annelida Coelenterata Arthropoda Answer :D

Discussion

16686.	Question : Haemichordates resembles annelids in
Answer» BODY form and BURROWING habit circulatory SYSTEM larva form body form, burrowing habit, circulatory system and occurcence of a FREE SWIMMING larva Answer :D

Discussion

16687.	Question : Haeckel proposed germ plasm theory.
Answer» ANSWER :AUGUST weisman

Discussion

16688.	Question : Had Darwin been aware of Mendel's work, would he been able to explain the origin of variations. Discuss.
Answer» Solution :Even though Mendel (Commonly called as Father of Genetics) had talked of INHERITABLE .factors. influencing phenotype Darwin either ignored these observations or kept silence. Darwin would have been able to explain the origin of variations. He asserted that variations, which are heritable and which make resource utilisation better for few (adapted to habitat better) will enable only those to REPRODUCE and leave more PROGENY. Though Darwinism EXPLAINS survival of the fittest but does not explain mode of arrival of the fittest. So he did not explained any particulate substance for INHERITANCE of continuous useful variations from one generation to the next. But Mendel explained inheritance of characters is particulate an ever character is controlled by a pair factors (now called as Alleles). So if Darwin was aware of Mendelism he could have been able to explain the origin of variations. And there inheritance.

Discussion

16689.	Question : Habitats such as thermal springs and deep-sea hydrothermal vents have average temperature exceeding
Answer» `100^@C` `150^@C` `80^@C` `1000^@C` ANSWER :A

Discussion

16690.	Question : Habitat loss and fragmentation, over exploitation, alien species invasion and co-extinction are the causes for
Answer» POPULATION explosion migration biodiversity LOSS pollution Answer :C

Discussion

16691.	Question : Habitat loss and fragmentation has caused severe damage to a particular type of ecosystem. Name it.
Answer» SOLUTION :TROPICAL RAIN FOREST.

Discussion

16692.	Question : Habitat includes : - (a) Biotic component (b) Physio chemical component (c ) Pathogens, parasite, predator, competitions (d) Different species
Answer» a, B, d a, d b, C, d a, b, c, d Answer :D

Discussion

16693.	Question : Habitat includes :- (a) Biotic components (b) Physico-chemical components (c) Pathogens, parasite, predator, competitors (d) Different species
Answer» a, b & d a, d b, c, d a, b, c, d Answer :D

Discussion

16694.	Question : HAART is suggested for the treatment of ……….. .
Answer» malaria cancer high CHOLESTEROL LEVEL AIDS Answer :D

Discussion

16695.	Question : H_(2)N-underset(R )underset(\|)overset(H)overset(\|)C-COOH is feneral formula of amino acid. Here R stands is
Answer» An AMINO ACID A CARBOXYLIC group A variable group A HYDROXYL group. Solution :N//A

Discussion

16696.	Question : Gynoecium having three fused carpels with a single ovule containing chamber is
Answer» TRICARPELLARY, SYNCARPOUS, UNILOCULAR Tricarpellary, polycarpellary, unilocular Tricarpellart, syncarpous, TRILOCULAR Tricarpellary, polycarpellary, trilocular . ANSWER :A

Discussion

16697.	Question : Gynobasic style is found in
Answer» Labiatae/Lamiaceae Liliaceae Gramineae/Poaceae Compositae/Asteraceae Answer :A

Discussion

16698.	Question : Gynandromorph is :
Answer» MALE with FEMALE trait Female with male traits HALF male and half female None of the above Answer :C

Discussion

16699.	Question : Gynandrous condition means
Answer» Adhesion of STAMENS and CARPELS COHESION of stamens Stamens united by FILAMENTS only Free stamens Answer :A

Discussion

16700.	Question : Gynaecomastia is common feature seen in
Answer» Down's syndrome Turner's syndrome cystic fibrosis Klinefelter's syndrome Answer :D

Discussion

Explore topic-wise InterviewSolutions in .

Question : Halophiles, thermoacidophiles and methanogens :-

Question : Hallucinations begin to appear with a water loss of

Question : Half of the pelvic girdle is termed as _________ .

Question : Half inferior ovary occurs in the flowers of

Question : Haldane's effect explains

Question : Haldane described 'Hot dilute soup' in his theory. Describe how this soup led to formation of some important molecules.

Question : Hairpin model of t-RNA

Question : Hair cells on the 'Crista' receive the stimuli related to

Question : Haemophilia, Sickle cell anaemia and Phenyl ketonurea are Mendelian disorders.Which one of the above is an example of inborn error of metabolism ? Mention the cause of the disorder.

Question : Haemophilia is transmitted from normal carrier female to male progeny because it is

Question : Haemophilia, Sickle cell anaemia and Phenyl ketonurea are Mendelian disorders.What do you mean by Mendelian disorder ?

Question : Haemophilia is more common in males because it is a

Question : haemophilia is due to:

Question : Haemophilia is

Question : Haemophilia in man is due to

Question : haemophilia in human being is

Question : Haemophilia B is otherwise called what disease ?

Question : Haemophilia and Thalassemia both are examples of Mendelian order, but show difference in their inheritance pattern. Explain how.

Question : Haemophiliaand sickle - cellAnaemia

Question : Haemolytic jaundice is due to a dominant gene but only 10% of the people develops this disease.A heterozygous male marries a homozygous normal woman.What proprtion of the children in population would be expected to have this disorder ?

Question : Haemophila -B is due to the deficiency of

Question : Haemolytic disorder of newborn occurs when an Rh negative mother undergues second pregnancy and father is Rh positive. This can be avoided by

Question : Haemolymph in cockroach is devoid of

Question : Haemoglobin-oxygen dissociation cUJve is 0

Question : Haemoglobin is a type of

Question : Haemoglobin is dissolved in blood plasma of

Question : Haemoglobin is:

Question : Haemoglobin has greater affinity for

Question : Haemoglobin breakdown occurs in

Question : Haemoglobin acts as a buffer due to the presence of

Question : Haemodialysis is done to treat patient for failure of _____ organ.

Question : Haemocyanin pigment is found in

Question : Haemocyanin associated with

Question : Haemocoel occurs in

Question : Haemichordates resembles annelids in

Question : Haeckel proposed germ plasm theory.

Question : Had Darwin been aware of Mendel's work, would he been able to explain the origin of variations. Discuss.

Question : Habitats such as thermal springs and deep-sea hydrothermal vents have average temperature exceeding

Question : Habitat loss and fragmentation, over exploitation, alien species invasion and co-extinction are the causes for

Question : Habitat loss and fragmentation has caused severe damage to a particular type of ecosystem. Name it.

Question : Habitat includes : - (a) Biotic component (b) Physio chemical component (c ) Pathogens, parasite, predator, competitions (d) Different species

Question : Habitat includes :- (a) Biotic components (b) Physico-chemical components (c) Pathogens, parasite, predator, competitors (d) Different species

Question : HAART is suggested for the treatment of ……….. .

Question : H_(2)N-underset(R )underset(|)overset(H)overset(|)C-COOH is feneral formula of amino acid. Here R stands is

Question : Gynoecium having three fused carpels with a single ovule containing chamber is

Question : Gynobasic style is found in

Question : Gynandromorph is :

Question : Gynandrous condition means

Question : Gynaecomastia is common feature seen in