24277 + Interview Questions in Biology in Class 12 Page 309 InterviewSolution

15401.	Question : In production of which thing fermentation is not done?(A) N_2 fixing(B) Ensilage(C) Pickel(D) Toddi-drink
Answer» `N_2` FIXING ENSILAGE Pickel Toddi-drink SOLUTION :`N_2` fixing

Discussion

15402.	Question :In production of what, Bacillus thuringiensis are used ?
Answer» BIO PESTICIDE PLANT BIOFERTILIZER Bio metrological Bio-salts method Solution :Bio pesticide plant

Discussion

15403.	Question : From which of the following iscitric acid is obtained ?
Answer» ASPERGILLUS NIGER Azotobactor Candida None SOLUTION :Aspergillus niger

Discussion

15404.	Question : In primordial atmosphere, when the living organism cvolved the respiration process was
Answer» Aerobic as it RELEASED more ENERGY ANAEROBIC because EARLY atmosphere contained little or no oxygen Aerobic as it was more complex Anaerobic as it released more energy Answer :B

Discussion

15405.	Question : In primitive atmosphere ATP was formed when adenine combined with
Answer» Monophosphate Diphosphate TRIPHOSPHATE Polysulphate ANSWER :C

Discussion

15406.	Question : In primate mammals cyclical changes occur during reproduction are called
Answer» SEASONAL breeders Menstrual CYCLES Menopause Continuous breeders Answer :B

Discussion

15407.	Question : In primary structure of a protein, methionine is located at left end of amino acid chain while glutamic acid is located at right end. Which of the following statement is ture with respect to above mentioned protein?
Answer» METHIONINE is a C-terminal AMINO ACID Glutamic acid is the FIRST amino acid of the chain Glutamic acid is N-terminal amino acid Methionine is the first amino acid of the chain Answer :D

Discussion

15408.	Question : In primary succession on rocks ,the pioneer species are usually
Answer» Alage Fungi Lichens Bryophytes Answer :C

Discussion

15409.	Question : In primary structure a protein is imagined as a line, the left end represents :-
Answer» The first amino ACID and its CARBOXYL terminal The LAST amino acid and its carboxyl terminal The first amino acid and its amino terminal The last amino acid and its amino terminal Answer :C

Discussion

15410.	Question :In presence of sun rays, the face becomes reddish due to:
Answer» EFFECT of light Expansion of BLOOD capillaries Haemolysis Skin irritation Answer :B

Discussion

15411.	Question :In preparation of which of the following milk is not used ?
Answer» CHEESE HONEY SWEET BUTTER SOLUTION :Honey

Discussion

15412.	Question : In pregnancy , the first movements of the foetus and appearance of hair on the head are usually observed during the
Answer» Fifth week Fifth months First month First TRIMESTER Solution :Second trimester The first movement of the foetus and APPEARANCE of hair on the head are usually observed during the fifth month 2(20 weeks) of the pregnancy. By the END of second month of pregnancy, the foetus develops LIMBS and digits

Discussion

15413.	Question : In poultry industry , production of hatching eggs is more expensive than the production of market eggs. Read the given statement regarding thisI. cost of males and their depreciation value in high. II. Mortality among females is usually lower when they are mated with males. III. number of eggs produced by hatchery flock are to be sold only as market eggs. IV. some of eggs produced by hatchery flocks are not acceptable for incubation.
Answer» I, II and III II, III and IV III, IV and I IV, I and II Solution :I, II and III

Discussion

15414.	Question : In poultry first deworming is usually done around this age
Answer» 4 weeks 8 weeks 12 weeks 16 weeks Answer :B

Discussion

15415.	Question : In poultry , coccidiosis is caused by
Answer» Virus Fungus Helminth PARASITE PROTOZOAN ANSWER :D

Discussion

15416.	Question : In poultry birds, the inheritance of combs is controlled by
Answer» Duplicate genes COLLABORATOR GENE complementary gene Both (a)and (B) Answer :B

Discussion

15417.	Question : In potato , vegetative propagation takes place by: a) Root b) Leaf c)grafting d) stem tuber
Answer» Root Leaf Grafting Stem tuber Answer :B

Discussion

15418.	Question : In potato.vegetativepropagation takes place by:
Answer» ROOT Leaf Grafting STEM tuber Answer :D

Discussion

15419.	Question :In porifera which type of fertilization takes place ?
Answer» Self & external Self & Internal CROSS & external Cross & Internal ANSWER :D

Discussion

15420.	Question : In population of 1000 individuals 360 belongs to aa. Based on this date, frequency of allele A in the population is
Answer» 0.4 0.5 0.6 0.7 Solution :According to hardy-Weinberg principle `(p+Q)^(@)=p^(2)+3pq+q^(2)-1` where, p=the frequency of allele 'A' q=The frequency of allele 'a' `p^(2)`=The frequency of INDIVIDUAL 'AA' `q^(2)`=The frequency of individual 'aa' 2pq=The frequency of individual 'Aa' `(A A)[^(2)=36` out of 100. `q^(2)=160` out of 1000 or `q^(2)=16` out of 100. So, `q=sqrt(0.16)=0.4` As `p+q=1` So, p is 0.6.

Discussion

15421.	Question : In population, per capita birth rate is 0.15 and per capita death rate is 0.08 during unit time period. What is the value of 'r'?
Answer» `0.25` `0.07` `0.05` `0.25` ANSWER :B

Discussion

15422.	Question : In population if gene M and gene m both are in equal number, so give the ratio and type of gene.
Answer» 81 % MM : 18 % Mm : 1 % mm 25 % MM : 50 % Mm : 25 % mm 50 % MM : 25 % Mm : 25 % mm 18 % MM : 81 % Mm : 1 % mm Solution :25 % MM : 50 % Mm : 25 % mm

Discussion

15423.	Question : In polytene chromosomes dark bands are visble . These bands are formedby the apposition of :
Answer» CHROMOSOMES on chromonemata protein PARTICLES NUCLEOSOMES NONE of the above Answer :A

Discussion

15424.	Question : In polycythemia the number of red cells increases greatly.This causes adverse effects due to
Answer» Decreased BLOOD volume Increased CIRCULATION time Increased VISCOSITY of blood Increased availability of oxygen Answer :C

Discussion

15425.	Question : In polymeric geneaction, the modifieddihybridphenotypic ratio in F_(2) generation is
Answer» `9:3:3:1` `13:3` `9:6:1` `12:3:4` ANSWER :C

Discussion

15426.	Question : In plants, which one of the followingtissues is dead ?
Answer» Parenchyma Collenchyma Sclerenchyma Phloem Solution :Sclerenchyma tissues are found in hard parts of plant BODY, in cortex, pith, hypodermis,in the pulp of fruits. Young cellsare livingand they have PROTOPLASM. Butmaturedcells becomes dead DUE to deposition ofsecondary walls. They give machenical support,STRENGTH and rigidityto the plantbody.

Discussion

15427.	Question : In plasmodium, gametocytes are formed from
Answer» Schizont Trophozoite SPOROZOITE MEROZOITE SOLUTION :Merozoite

Discussion

15428.	Question : In plants, which one of the following gases is released during Photosythesis ?
Answer» CARBON DIOXIDE Oxygen Hydrogen Methane SOLUTION :In photosynthesis, oxygen is also RELEASED as a WASTE product.

Discussion

15429.	Question : In plants water rises upwards through:
Answer» Phloem Cambium Cortex Xylem Answer :D

Discussion

15430.	Question : In plants water is translocated upward through ____tissue.
Answer» ANSWER :XYLEM

Discussion

15431.	Question : In plants, the process of transpiration helps in ..........
Answer» absorption of O_2` UPWARD conduction of WATER and minerals absorption `CO_2` opening of STOMATA Answer :upwads TRANSLOCATION of water

Discussion

15432.	Question : In plants, nitrate is reduced to ammonium state in two steps, in second step, electrons are donated by
Answer» ferredoxin nitrate reductase nitrite reductase cytochrome-`b_(5)` ANSWER :A

Discussion

15433.	Question : In plants certain structures such as runner, rhizome, sucker, tuber, offset, bulb are all capable of giving rise to new offspring. These structures are called
Answer» Clones Grafts Vegetative propagules Adventitious buds. Answer :C

Discussion

15434.	Question : In plant succession when climax is reached, the net productivity
Answer» CONTINUES to increase becomes halved becomes stable becomes zero Answer :C

Discussion

15435.	Question : In plant, mitotic cell division is seen in the -
Answer» ANSWER :DIPLOID CELLS and HAPLOID cells

Discussion

15436.	Question : In plant cell glycolysis operates in:
Answer» MITOCHONDRIA Peroxisome Mesosome Cytoplasm Answer :D

Discussion

15437.	Question : In plant breeding programmes, the entire collection (of plants/seeds) having all the diverse alleles for all genes in a given crop is called
Answer» SELECTION of SUPERIOR recombinants cross-hybridisation AMONG the selected parents evaluation and selection of parents GERMPLASM collection Solution :germplasm collection

Discussion

15438.	Question : In plant biotechnology, root tumours are induced in plant using the bacterium
Answer» AGROBACTERIUM rhizogenes Agrobacterium basilis RHIZOBIUM NONE of these SOLUTION :Agrobacterium rhizogenes

Discussion

15439.	Question : In plant biotechnology,root tumors are induced by
Answer» RHIZOBIUM sp. Agrobacterium tumefacians Agrobacterium rhizogenes Agrobacterium basilis Answer :B

Discussion

15440.	Question : In plant biotechnology, root tumors are induced by
Answer» RHIZOBIUM AGROBACTERIUM tumifaciens Agrobacterium rhizogenes Agrobacterium basilis SOLUTION :Agrobacterium rhizogenes

Discussion

15441.	Question : In plant A, 2n = 12 and in plant B, 2n =. 16. Then the ploidy number of cross breeding plant is
Answer» 7 21 14 28 Answer :C

Discussion

15442.	Question : In Pinus, the pollen grain has 6 chromosomes then its endosperms will have the chromosome
Answer» 12 18 6 24 Solution :(c) In gymnosperms (Pinus) both the POLLEN grains and endosperm are haploid STRUCTURE, formed before fertilisation.If the pollen GRAIN has haploid number of CHROMOSOME equal to 6, then its endosperm will also have the same number of chromosome, i.e. 6.

Discussion

15443.	Question : In pisum sativum pleiotropic factor influences
Answer» The COLOR of FLOWER and the color of pod The color of pod and the color of cotyledon The color of SEED coat the color of flower The color of cotyledon and the color of seed coat Answer :C

Discussion

15444.	Question : In PKU, there is no synthesis of enzyme______.
Answer» ANSWER :Phenyle ALANINE HYDROXYLASE

Discussion

15445.	Question : In Pinus, pollen grains develop inside
Answer» ANTHER Tapetum Pollen chamber Microsporangium. ANSWER :D

Discussion

15446.	Question : In Pinus, male and female cones occur on:-
Answer» DIFFERENT plants same BRANCH of different plant different BRANCHES of same plant different branches of different plants Answer :C

Discussion

15447.	Question : In Pinus/gumnosperms, the haploid structure are
Answer» megaspore, endosperm and embryo megaspore, POLLEN grain and endosperm megaspore, integument and root pollen grain, leaf and root Solution :(b) In gymnosperms, the megaspore (haploid) is first cell of FEMALE gametophyte and undergoes repeated divisions to form a multicellular female gametophyte, which because of abundant FOOD reserves, serves as endosperm. So, being PRODUCED before fertilisation,endosperm is haploid in gymnosperms.Microspored or pollen GRAINS are the first cell of the male gametophyte and are haploid in nature.

Discussion

15448.	Question : In Pinus/Cycas/gymnosperms, the endosperm is
Answer» trlploid haploid diploid tetraploid Solution :(B) In GYMNOSPERMS, e.g. Pinus, Cycas, endosperm DEVELOPS before fertilisation and is haploid in nature.In ANGIOSPERMS, endosperm is TRIPLOID (3n) and formed after double fertilisation.

Discussion

15449.	Question : In Pinus :
Answer» SEED is WINGED but POLLEN grains are not Both seed and pollen grains are wingless Pollen grains are winged but seed is not Both seeds and pollen grains are winged Answer :D

Discussion

15450.	Question : In pigeons, checkered pattern is dominant over plain pattern and red colour is dominant over brown. A checkered brown female mated with a pain red male produced two checkered red, two plain red, and one checkered brown offspring.What are the probable genotypes of the parents?
Answer» CCRR and ccrr CcRr and CRrr CcRr and ccRR Ccrr and ccRr Answer :D

Discussion

Explore topic-wise InterviewSolutions in .

Question : In production of which thing fermentation is not done?(A) N_2 fixing(B) Ensilage(C) Pickel(D) Toddi-drink

Question :In production of what, Bacillus thuringiensis are used ?

Question : From which of the following iscitric acid is obtained ?

Question : In primordial atmosphere, when the living organism cvolved the respiration process was

Question : In primitive atmosphere ATP was formed when adenine combined with

Question : In primate mammals cyclical changes occur during reproduction are called

Question : In primary structure of a protein, methionine is located at left end of amino acid chain while glutamic acid is located at right end. Which of the following statement is ture with respect to above mentioned protein?

Question : In primary succession on rocks ,the pioneer species are usually

Question : In primary structure a protein is imagined as a line, the left end represents :-

Question :In presence of sun rays, the face becomes reddish due to:

Question :In preparation of which of the following milk is not used ?

Question : In pregnancy , the first movements of the foetus and appearance of hair on the head are usually observed during the

Question : In poultry first deworming is usually done around this age

Question : In poultry , coccidiosis is caused by

Question : In poultry birds, the inheritance of combs is controlled by

Question : In potato , vegetative propagation takes place by: a) Root b) Leaf c)grafting d) stem tuber

Question : In potato.vegetativepropagation takes place by:

Question :In porifera which type of fertilization takes place ?

Question : In population of 1000 individuals 360 belongs to aa. Based on this date, frequency of allele A in the population is

Question : In population, per capita birth rate is 0.15 and per capita death rate is 0.08 during unit time period. What is the value of 'r'?

Question : In population if gene M and gene m both are in equal number, so give the ratio and type of gene.

Question : In polytene chromosomes dark bands are visble . These bands are formedby the apposition of :

Question : In polycythemia the number of red cells increases greatly.This causes adverse effects due to

Question : In polymeric geneaction, the modifieddihybridphenotypic ratio in F_(2) generation is

Question : In plants, which one of the followingtissues is dead ?

Question : In plasmodium, gametocytes are formed from

Question : In plants, which one of the following gases is released during Photosythesis ?

Question : In plants water rises upwards through:

Question : In plants water is translocated upward through ____tissue.

Question : In plants, the process of transpiration helps in ..........

Question : In plants, nitrate is reduced to ammonium state in two steps, in second step, electrons are donated by

Question : In plants certain structures such as runner, rhizome, sucker, tuber, offset, bulb are all capable of giving rise to new offspring. These structures are called

Question : In plant succession when climax is reached, the net productivity

Question : In plant, mitotic cell division is seen in the -

Question : In plant cell glycolysis operates in:

Question : In plant breeding programmes, the entire collection (of plants/seeds) having all the diverse alleles for all genes in a given crop is called

Question : In plant biotechnology, root tumours are induced in plant using the bacterium

Question : In plant biotechnology,root tumors are induced by

Question : In plant biotechnology, root tumors are induced by

Question : In plant A, 2n = 12 and in plant B, 2n =. 16. Then the ploidy number of cross breeding plant is

Question : In Pinus, the pollen grain has 6 chromosomes then its endosperms will have the chromosome

Question : In pisum sativum pleiotropic factor influences

Question : In PKU, there is no synthesis of enzyme______.

Question : In Pinus, pollen grains develop inside

Question : In Pinus, male and female cones occur on:-

Question : In Pinus/gumnosperms, the haploid structure are

Question : In Pinus/Cycas/gymnosperms, the endosperm is

Question : In Pinus :

Question : In pigeons, checkered pattern is dominant over plain pattern and red colour is dominant over brown. A checkered brown female mated with a pain red male produced two checkered red, two plain red, and one checkered brown offspring.What are the probable genotypes of the parents?