24277 + Interview Questions in Biology in Class 12 Page 445 InterviewSolution

22201.	Question : Among the ecosystem services are control of floods and soil erosion. How is this achieved by the biotic components of the ecosystem?
Answer» Solution :The basic methodsof flood CONTROL have been practised since ANCIENT times. These methods include reforestation and the CONSTRUCTION of leavees, dams, reservoirs and floodways (artificial channels that divert flood water). Soil erosion is controlled by mulching (bare soil between growing plants is covered with a layer of organic matter such as straw, grasses, leaves, husks etc), cover crops and green manures, mixed cropping (growing a variety of crops), early planting (the period at beginning of the rainy season when the soil is prepared for planting), crop residues (after harvest leave the stalks, STEMS and leaves of the crop), agroforestry (planting trees among the agricultural crops), minimum CULTIVATION etc. can reduce soil erosion.

Discussion

22202.	Question : Among the crustose, foliose and fruticose lichens which one is a pioneer species?
Answer» SOLUTION :Crustoselichens.

Discussion

22203.	Question : Amongthe animal group is given below , whichone has the highest percentageof endangered species ?
Answer» Insects Mammals Amphibians REPTILES ANSWER :C

Discussion

22204.	Question : Among the animals, insects particularly bees are the domiant pollinating agents. List any four characteristic features of the insect pollinated flower.
Answer» Solution :(i) Flowers are LARGE (II) Colourful petals of flowers (iii) Presence of fragnance (iv) RICH in NECTAR

Discussion

22205.	Question : Among soyabean, brinjal, tulip, rose, cucumber, chilli and guava, how many plants have superior ovary?
Answer» Three Five Seven Four Answer :C

Discussion

22206.	Question : Among protected areas in India, how many National Parks and wild life sanctuaries ?
Answer» 90, 448 492, 89 489, 92 92, 489 SOLUTION :90, 448

Discussion

22207.	Question : Among rust, smut and mushroom all the these have common character :-
Answer» are pathogen are saprobes do not BEAR ascocarp bear basidiocarp Answer :C

Discussion

22208.	Question : Among Ramapithecus, Australopithecines and Homo habilis - who probably did not eat meat?
Answer» Solution :Homo habiIis doesn.t eat MEAT and has BRAIN CAPACITY 650-800cc.

Discussion

22209.	Question :Among plants ( algae , bryophytes , pteridophytes , gymnosperms and angiosperms ) , maximum diversity is present in :
Answer» ANGIOSPERMS BRYOPHYTES Pteridophytes Gymnosperms Answer :D

Discussion

22210.	Question : Among mammals, the efficiency of ventilation of lungs as compared to reptiles and birds is better developed by the presence of
Answer» RIBS `&` COSTAL muscles Only ribs Only costal muscles Diaphragm Answer :4

Discussion

22211.	Question : Among human ancestors, brain size was more than 1000 c cin
Answer» Homo erectus Home habilis Homo neanderthalensis Ramapithecus. Solution :TRIASSIC. An epoch between 208-245million YEARS AGO with dru climate. Sandstone rocksare common. First MAMMALS appeared.

Discussion

22212.	Question : Among bryophytes, lichens and fern which one Is a pioneer species in a xerlc succession ?
Answer» Solution :The SPECIES that invade a bare area are CALLED pioneer species which later pave way to some small plants LIKE bryophytes which are with time succeeded by bigger plants. Lichen PRODUCES Lichen acid and carbonic acid and that weathers surface of rock and releases required minerals for growth. In weathered rock, soil particles are collected by wind and provide surface for bryophytes and pterido phytes (Fern NEPHROLEPIS).

Discussion

22213.	Question : Among animals, which are the most species rich taxonomic group?
Answer» Insects Amphibians Reptiles Fishes Answer :A

Discussion

22214.	Question : Amoeboid movement in macropheges in due to
Answer» Streaming of cytoplasm MICROFILAMENT PRESENTS in the cytoplasm Microtubules present in the pellicle both 1 and 2 Answer :D

Discussion

22215.	Question : Amoebiasis is caused by infection of :
Answer» Amoeba Entamoeba Plasmodium Leishmania Answer :B

Discussion

22216.	Question : Amoeba withdraw their pseudopodia and becomes round in shape and create (A) around themselves, this process is called (B).(A) A = protective three layered cyst,B = Encystations(B) A = protective two layered cyst,B = Encystations (C) A = protective membraneB = sporulation(D) A = Bilayer lipid membraneB = pseudopodiospores.
Answer» A = protective THREE layered cyst, B = Encystations A = protective TWO layered cyst, B = Encystations A = protective membrane B = SPORULATION A = BILAYER lipid membrane B = pseudopodiospores. Answer :A

Discussion

22217.	Question : Amoeba secretes digestive enzymes for hydrolysing
Answer» PROTEIN STARCH FAT All the above. Answer :D

Discussion

22218.	Question : Amoeba reproduces asexually by binary fission as well as _____
Answer» ANSWER :MULTIPLE FISSION

Discussion

22219.	Question : Amoeba moves and captures food by cilia.
Answer» a. True b. False Answer :PSEUDOPODIA

Discussion

22220.	Question : Why Amoeba is called immortal ?
Answer» Solution :Amoeba divides by BINARY fission. The parent body as a whole constitutes the REPRODUCTIVE unit. It disappears when its division into daughter individial is Completed. The parent body cannot be SAID to have died as no dead body is LEFT.

Discussion

22221.	Question : Amoeba divides into two halves and each rapidly grows into an adult. This process is known as?
Answer» SOLUTION :BINARY FISSION.

Discussion

22222.	Question : Amoeba asexually multiplies by binary fission whereas sponge by……..
Answer»

Discussion

22223.	Question :Amniotic bag
Answer» SOLUTION :LOCATION : Surrounding DEVELOPING embryo. Function : AFT of embryo FLUID is DONE located in it.

Discussion

22224.	Question : Amnion is an effective shock absorber. Comment on it.
Answer» Solution :The amnion provides a fluid medium to the developing embryo. This fluid prevents the DESICCATION of the embryo and thus acts as a SHOCK ABSORBER.

Discussion

22225.	Question : Amniocentesis is a method to: 1. Detect genetic disorder in an unborn baby ""2.Prenatal sex-determination 3.Medical termination of pregnancy "" 4. Fertilize the egg Codes:
Answer» 1, 2 and 3 are correct 1 and 2 are correct 2 and 4 are correct 1 and 3 are correct Answer :B

Discussion

22226.	Question : Amniocentesis, the foetal sex determination test, is banned in our country. Is it necessary comment?
Answer» Solution : Amniocentesis is a prenatal technique USED to detect any chromosomal abnormalities in the foetus and it is being OFTEN misused to determine the SEX of the foetus. Once the sex of the foetus is known, there may be a chance of FEMALE foeticide. Hence, a statutory ban on amniocentesis is IMPOSED.

Discussion

22227.	Question : Amniocentosis is process to :
Answer» Determine any DISEASE in the brain Know about disease of HEART Determine karyotype and any hereditary disease in embryo. All of these Answer :C

Discussion

22228.	Question : Amniocentesis is a method to: 1. Detect genetic disorders in an unborn baby 2. Prenatal sex determination 3. Medical termination of pregnancy4. Fertilize the egg
Answer» 1, 2 and 3 are correct 1 and 2 are correct 2 and 4 are correct 1 and 3 are correct Answer :B

Discussion

22229.	Question : Amniocentesis involves
Answer» digestion of AMINO acid conversion of glucose to amino acids taking out of cells NEAR the fetus killing of CHILD before birth Answer :C

Discussion

22230.	Question : Amniocentesis for sex determination is banned in our country. Is this ban necessary?
Answer» Solution :Yes ,It is NECESSARY to avoid female FOETICIDE leading to SEXUAL imbalance. This prenatal diagnosis TECHNIQUE is used to test genetic disorders of the developing FOETUS.

Discussion

22231.	Question :Amniocentesis for sex determination is banned in our country. Is this ban necessary ? Comment.
Answer» Solution :YES, the MISUSE of this METHOD is DONE for female foeticide.

Discussion

22232.	Question : Amniocentesis diagnose genetic irregularity of embryo / foetus.
Answer» SOLUTION :The method known as AFT, during embryonic or foetal stage the amniotic fluid surrounding the bag is taken from fluid bag as a sample. Then its GENETIC disorder is FOUND out by DNA testing. If the disease is incurable then she is advised for TERMINATION of pregnancy.

Discussion

22233.	Question : Ammu reads in the newspaper that BOD of water body in a nearby village was high and there is algal bloom. Give possible reasons for these phenomena?
Answer» SOLUTION :PRESECE of LARGE amont of NUTRIENTS in WATER.

Discussion

22234.	Question : Ammu reads in the newspaper that BOD of water body in a nearby village was high and there is algal bloom. What is algal bloom?
Answer» SOLUTION :EXCESSIVE GROWTH of free floating algae in a WATER body is CALLED algal Bloom.

Discussion

22235.	Question : Ammu readin thenewspaperthat ,BODof a waterbodyin anearbyvillagewas highandthereis algal bloom a) what isBOD b)what isalgalbloom ? can yougive possiblereasonfor these[phenomenon ?
Answer» SOLUTION :a) Biologicaloxygen DEMAND b)Inceased algalpopulation C)It is DUE to the accumulationof inorganicnutrientslike phosphateand nitratein water BODY

Discussion

22236.	Question : Ammu reads in the newspaper that BOD of water body in a nearby village was high and there is algal bloom. What is BOD?
Answer» SOLUTION :BIOCHEMICAL OXYGEN DEMAND.

Discussion

22237.	Question : Ammonia___(A)__tonitrite___(B)__tpnitrate What are (A) & (B) in the given process :-
Answer» `{:(A,B),("Nitrosomonas", "Nitrococcus"):}` `{:(A,B),("NITROBACTER", "Nitrococcus"):}` `{:(A,B),("Nitrosomonas", "Nitrobacter"):}` `{:(A,B),("PSEUDOMONAS", "Nitrobacter"):}` Answer :C

Discussion

22238.	Question : Ammonotelism, Ureotelism and Uricotelism.
Answer» SOLUTION :

Discussion

22239.	Question : Ammonia ure, uric acids are the by-products of which materials?
Answer» ANSWER :PROTEINS

Discussion

22240.	Question : Ammonia is changed into uric acid in the liver of_____.
Answer» AMMONOTELIC animal Uricotelic animal Ureotelic animal None of the above Answer :B

Discussion

22241.	Question : Aminotelic organisms excrete
Answer» `NH_(3)` `NH_(4) ION` AMINOACIDS Allantoin Answer :C

Discussion

22242.	Question : Amino acids which are specified by single codons are
Answer» PHENYLALANINE and arginine trytophan and METHIONINE valine and PROLINE methionine and arginine Answer :B

Discussion

22243.	Question : Amino acids present in C-peptide of pro-insulin are(A) 23(B) 31(C) 38(D) 43
Answer» 23 35 38 43 Solution :35

Discussion

22244.	Question : Amino acids present in improved varieties of maize are
Answer» METHIONINE and alanine alanine and CYSTEINE methionine and cysteine LYSINE and TRYPTOPHAN. Solution :lysine and tryptophan.

Discussion

22245.	Question : Amino acids are the building blocks of protein. How is a protein synthesised from amino acids?
Answer» Solution :By LINKING the amino acids with the help of PEPTIDE BONDS.

Discussion

22246.	Question : Amino acids and polynucleotides similar to DNA was found in Mighi Meteorite and Marchison Meteorite by space biologists. In which country, these Meteorites were fell in 1889?
Answer» INDIA PAKISTAN UKRAINE America Answer :C

Discussion

22247.	Question : Amino acids are mostly synthesized from
Answer» MINERAL salts FATTY ACIDS Volatile acids `alpha` - ketoglutaric ACID ANSWER :D

Discussion

22248.	Question : Amino acid sequence in protein synthesis is decided by the sequence of
Answer» rRNA cDNA tRNA mRNA Answer :D

Discussion

22249.	Question : Amides are the storage and transported forms of nitrogen because they –
Answer» NEEDS less ATP for their transport contain high nitrogen as compare to amino acids are TRANSPORTED through xylem tracheary elements can EASILY be deaminated to FORM organic acids and ammonia Answer :B

Discussion

22250.	Question : Amino acid acceptor end of tRNA lies at
Answer» 5' END 3' end `TPsiC` loop DHU loop Answer :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : Among the ecosystem services are control of floods and soil erosion. How is this achieved by the biotic components of the ecosystem?

Question : Among the crustose, foliose and fruticose lichens which one is a pioneer species?

Question : Amongthe animal group is given below , whichone has the highest percentageof endangered species ?

Question : Among the animals, insects particularly bees are the domiant pollinating agents. List any four characteristic features of the insect pollinated flower.

Question : Among soyabean, brinjal, tulip, rose, cucumber, chilli and guava, how many plants have superior ovary?

Question : Among protected areas in India, how many National Parks and wild life sanctuaries ?

Question : Among rust, smut and mushroom all the these have common character :-

Question : Among Ramapithecus, Australopithecines and Homo habilis - who probably did not eat meat?

Question :Among plants ( algae , bryophytes , pteridophytes , gymnosperms and angiosperms ) , maximum diversity is present in :

Question : Among mammals, the efficiency of ventilation of lungs as compared to reptiles and birds is better developed by the presence of

Question : Among human ancestors, brain size was more than 1000 c cin

Question : Among bryophytes, lichens and fern which one Is a pioneer species in a xerlc succession ?

Question : Among animals, which are the most species rich taxonomic group?

Question : Amoeboid movement in macropheges in due to

Question : Amoebiasis is caused by infection of :

Question : Amoeba secretes digestive enzymes for hydrolysing

Question : Amoeba reproduces asexually by binary fission as well as _____

Question : Amoeba moves and captures food by cilia.

Question : Why Amoeba is called immortal ?

Question : Amoeba divides into two halves and each rapidly grows into an adult. This process is known as?

Question : Amoeba asexually multiplies by binary fission whereas sponge by……..

Question :Amniotic bag

Question : Amnion is an effective shock absorber. Comment on it.

Question : Amniocentesis is a method to: 1. Detect genetic disorder in an unborn baby ""2.Prenatal sex-determination 3.Medical termination of pregnancy "" 4. Fertilize the egg Codes:

Question : Amniocentesis, the foetal sex determination test, is banned in our country. Is it necessary comment?

Question : Amniocentosis is process to :

Question : Amniocentesis is a method to: 1. Detect genetic disorders in an unborn baby 2. Prenatal sex determination 3. Medical termination of pregnancy4. Fertilize the egg

Question : Amniocentesis involves

Question : Amniocentesis for sex determination is banned in our country. Is this ban necessary?

Question :Amniocentesis for sex determination is banned in our country. Is this ban necessary ? Comment.

Question : Amniocentesis diagnose genetic irregularity of embryo / foetus.

Question : Ammu reads in the newspaper that BOD of water body in a nearby village was high and there is algal bloom. Give possible reasons for these phenomena?

Question : Ammu reads in the newspaper that BOD of water body in a nearby village was high and there is algal bloom. What is algal bloom?

Question : Ammu readin thenewspaperthat ,BODof a waterbodyin anearbyvillagewas highandthereis algal bloom a) what isBOD b)what isalgalbloom ? can yougive possiblereasonfor these[phenomenon ?

Question : Ammu reads in the newspaper that BOD of water body in a nearby village was high and there is algal bloom. What is BOD?

Question : Ammonia___(A)__tonitrite___(B)__tpnitrate What are (A) & (B) in the given process :-

Question : Ammonotelism, Ureotelism and Uricotelism.

Question : Ammonia ure, uric acids are the by-products of which materials?

Question : Ammonia is changed into uric acid in the liver of_____.

Question : Aminotelic organisms excrete

Question : Amino acids which are specified by single codons are

Question : Amino acids present in C-peptide of pro-insulin are(A) 23(B) 31(C) 38(D) 43

Question : Amino acids present in improved varieties of maize are

Question : Amino acids are the building blocks of protein. How is a protein synthesised from amino acids?

Question : Amino acids and polynucleotides similar to DNA was found in Mighi Meteorite and Marchison Meteorite by space biologists. In which country, these Meteorites were fell in 1889?

Question : Amino acids are mostly synthesized from

Question : Amino acid sequence in protein synthesis is decided by the sequence of

Question : Amides are the storage and transported forms of nitrogen because they –

Question : Amino acid acceptor end of tRNA lies at

Question : Ammonia_(A)tonitrite_(B)tpnitrate What are (A) & (B) in the given process :-