24277 + Interview Questions in Biology in Class 12 Page 310 InterviewSolution

15451.	Question : In Pickles, jams and jellies, the invaded bacteria die due to
Answer» ENDOSMOSIS LACK of aeration Deplasmolysis Plasmolysis Answer :D

Discussion

15452.	Question :In photosystem I, the first electron acceptor is:
Answer» An iron-sulphur protein Plastoquinone Cytochrome Plastocyanin Answer :A

Discussion

15453.	Question : In photosynthetic ' Quinone cycle' the number of electrons transferred from PQH_2to Cytochrome b_6is
Answer» ONE TWO THREE FOUR ANSWER :A

Discussion

15454.	Question : In photosynthetic bacteria, reaction centre and reducing agent are _______ and _______ respectively :-
Answer» `P_(700)` and `NADPH_(2)` `P_(700)` and `NADH_(2)` `P_(890)` and `NADPH_(2)` `B_(890)`and `NADH_(2)` Answer :D

Discussion

15455.	Question : In photosynthesis , oxygen is liberated due to
Answer» REDUCTION of carbon dioxide Hydrolysis of CARBOHYDRATE Photolysis of water Breakdown of CHLOROPHYLL ANSWER :C

Discussion

15456.	Question : In photosynthesis, splitting of water takes placeduring
Answer» CYCLIC photophosphorylation OXIDATIVE phosphorylation Non-cyclic phcitophosphorylation Calvin cycle Answer :C

Discussion

15457.	Question : In photosynthesis , chlorophyll serves as
Answer» Hydrogen ACCEPTOR Hydrogen donor ENERGY CONVERTOR RAW material Answer :C

Discussion

15458.	Question : In photorespiration, releases of one molecule of CO_(2) requires an input of how many molecules of O_(2)
Answer» 6 3 2 1 Answer :C

Discussion

15459.	Question : Inphotosynthesis _____ acts as the hydrogen carrier.
Answer» ANSWER :NADP

Discussion

15460.	Question : In photorespiration ____ number of ATP molecules are produced.
Answer» ANSWER :ZERO

Discussion

15461.	Question : In phenylketonuria, the amino acid (i) is not converted into (ii). Select the correct option to fill in the blanks (i) & (ii)
Answer» (i) Ketone, (II) Urea (i) PHENYLALANINE, (ii) Urea (i) Phenoxy acetic ACID, (ii) Ketone (i) Phenylalanine, (ii) Tyrosine Answer :D

Discussion

15462.	Question :In pedigree method of hybridization up to which generation the plants are tested and released for cultivation
Answer» `F_2` GENERATION `F_3` generation `F_4` generation `F_6` generation SOLUTION :`F_6` generation

Discussion

15463.	Question : In pedigree method of hybridisation upto which generation the plants tested and released for cultivation
Answer» `F_(2)` generation `F_(3)` generation `F_(4)` generation `F_(6)` generation Answer :B

Discussion

15464.	Question : In peas, tallness is dominant over dwarfness and red colour of flowers is dominant over the white colour. When a tall plant bearing red flowers was pollinated with a dwarf plant bearing white flowers, the different phenotypic groups were obtained in the progeny in numbers mentioned against them : Tall, Red =138, Tall, White = 132 Dwarf, Red =136, Dwarf, White = 128 Mention the genotypes of the two parents and of the four offspring types.
Answer» Solution :The result SHOWS that the four types of offspring are in a ratio of 1:1:1:1. Such a result is OBSERVED in a test-cross progeny of a DIHYBRID cross. The cross can be represented as: = Tall & Red (Tt Rr) `XX` Dwarf and White (TTRR)

Discussion

15465.	Question : In pedigree analysis the symbol represents :-
Answer» CONSANGUINEOUS marriage Sex unspecified Monozygotic twin Dizygotic twin Answer :C

Discussion

15466.	Question : In peas, tallness is dominant over dwarfness, and red colour of flowers is dominant over the white colour. When a tall plant bearing red flowers was pollinated by a dwarf plant bearing white flowers, the different phenotypic groups were obtained in the progeny in numbers mentioned against them Tall, Red = 138 Tall, White = 132 Dwarf, Red = 136 Dwarf, White = 128 Mention the genotypes of the two parents and of the types of four offspring
Answer» Solution :The RESULT shows that the four types of OFFSPRING are in a RATIO of 1:1:1:1. Such a result is observed in a test-CROSS progeny of a dihybrid cross. The cross can be represented as:

Discussion

15467.	Question : In peas ………….. Is dominant trait with respect to pod colour
Answer» PURPLE GREEN WHITE YELLOW

Discussion

15468.	Question : In pea type of ovule is
Answer» Orthotropous Anatropous Hemitropous Amphitropous Answer :B

Discussion

15469.	Question :In pea plants , yellow seeds are dominant to green . If a heterozygous yellow seeded plant is crossed with a green seeded plant , what ratio of yellow and green seeded plants would you expect in F_1 - generation ?
Answer» 50:50 9:1 1:3 3:1 Answer :D

Discussion

15470.	Question : In pea flowers, there are five petals, the largest (A) overlaps the two lateral petals (B) which in turn overlap the two smallest anterior petals (C Name A, B and (1) C
Answer» C STANDARD, B-wings, A-keel B-standard, A-wings. C-keel A-standard, B-wings, C-keel C-standard, A-wings, B-keel ANSWER :3

Discussion

15471.	Question : In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seed pant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in F, generation?
Answer» `9:3` `1:3` `3:1` `50:50` ANSWER :D

Discussion

15472.	Question : In Pea plant, when homozygous round seeded plant is crossed with homozygous wrinkled seeded plant, then the offsprings will be :-
Answer» 100 % with LARGE STARCH grains 75 % with MEDIUM sized starch grains 25 % with SMALL sized starch grains 0 % with small sized starch grains Answer :D

Discussion

15473.	Question : In pea plants, yellow seeds ar dominant to green. If a heterozygous yellow seeded plant is crossed with a green seeded plant, what raito of yellow and green seeded plants would you expected in F_(1) generation?
Answer» `50:50` `9:1` `1:3` `3:1` ANSWER :A

Discussion

15474.	Question : In Pavlov's experiments, which of the following was used as a stimulus for development of an acquired reflex?
Answer» Food Smell of food Sound of bell Both (1) and (2) ANSWER :C

Discussion

15475.	Question : In passive absorption of water, the concerned force develops from the root.
Answer» ANSWER :AERIAL PARTS

Discussion

15476.	Question : In paracentric inversion
Answer» CENTROSOME is INVOLVED Centrosome is splitted into two halves Inverted segment does not carry centromere Answer :C

Discussion

15477.	Question : In papaya, male and female flowers are present in separate plants. They are said to be _____
Answer» SOLUTION :DIOECIOUS

Discussion

15478.	Question : In Papaya, male and female flowers are present in separate plants. They are said to be
Answer» SOLUTION :Dioceous

Discussion

15479.	Question : In papaya,the flowers are:
Answer» Unisexual Bisexual Neuter FLOWERS are not FORMED ANSWER :A

Discussion

15480.	Question : In ovule meiosis occurs in :
Answer» MEGASPORE Megaspore MOTHER cell Endosperm Sporogonium Answer :B

Discussion

15481.	Question : In overy we can find (i) primary follicle , (ii) Graafina follicle (iiii) blood vessel , (iv) corpus luteum
Answer» (i) and (II) (ii), (III) and (IV) (iii) and (iv) (i), (ii), (iii) and (iv). SOLUTION :N//A

Discussion

15482.	Question : In ovary which structure transforms as corpus luteum and name the hormone secreted by corpus luteum ?
Answer» Solution :`@` FOLLICULAR CELLS of empty Graafian FOLLICLE. `@` PROGESTERONE.

Discussion

15483.	Question : In outbreeding..........
Answer» A superior MALE of any ONE SPECIES mate with a female of same species. A superior male of any one species mate with a female of other species. A superior male mate with INTERIOR female of same species. Different species of male and female mate Solution :A superior male of any one species mate with a female of other species.

Discussion

15484.	Question :In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?
Answer» Solution :Sex of the foetus is DETERMINED by father. MOTHER has no role in sex determination. So don.t blame mother for giving BIRTH to daughters.

Discussion

15485.	Question :In our society a woman is often blamed for not bearing male child. Do you think it is right? Justify.
Answer» SOLUTION : MALE is responsible for the SEX of the child because males produce two types of gametes-AX and AY whereas a female produces only ONE type of gametes-AX. So male child receives male determining Y-chromosome from father.

Discussion

15486.	Question : In our society a woman is often blamed for not bearing male child. Do you think it is right? Justify.
Answer» Solution : 50 PER CENT of sperms carry the X-chromosome while the other 50 percent carry the Y. After fusion of the MALE and female gametes the zygote would carry either XX or YY depending on whether the sperm carrying X or Y FERTILISED the ovum. Sex of the baby is determined by the father and not by the MOTHER. =Butunfortunatelyin our society women are blamed for producing female children and have been excluded and ill-treated because of thismisconception.

Discussion

15487.	Question : In our country, how many plant species are critically endangered ?
Answer» 113 18 44 143 Solution :44

Discussion

15488.	Question : In ornithine cycle, which of the following wastes are removed from the blood –
Answer» `CO_(2)` and ammonia Ammonia and UREA `CO_(2)` and urea Urea and urine Answer :A

Discussion

15489.	Question : In Ornithophily , the agents for cross pollination are ____________
Answer» ANTS BIRDS SNAILS Rats Answer :B

Discussion

15490.	Question :In organisms vestigial organs are formed because of
Answer» Internal forces of LIFE USE of ORGANS Inheritance of acquired characters Disuse of organs ANSWER :D

Discussion

15491.	Question : In ornithine cycle, enzyme arginase breaks down arginine into
Answer» CITRULLINE and AMMONIA ORNITHINE and ammonia Ornithine and UREA Citrulline and urea Answer :C

Discussion

15492.	Question : In order trees , the inner annual rings are called :
Answer» Heartwood Sapwood Phloem Dermatogen Answer :A

Discussion

15493.	Question : In order to obtain virus-free plants through tissue culture the best method is Or In Crop Improvement Programmer Virus Free clones can be obtained Through Which of the following methods is/are used in recovery of healthy plants from diseased plants
Answer» ANTHER culture Meristerm culture Protoplast culture Embroyo rescue Answer :B

Discussion

15494.	Question : In order to ssediment free ribosomes, centrifugation required is
Answer» 300000 G 50000 g 12000 g 800 g Answer :A

Discussion

15495.	Question : In order to obtain the. F_1 generation Mendel pollinated a pure-breeding tall plant with a pure breeding dwarf plant. But for getting the F_2 generation, he simply self-pollinated the tall F_1 plants. Why?
Answer» Solution : Mendel performed SELFING among the `F_1` TALL HYBRIDS(Tt) in order to SEGREGATE the two-traits.

Discussion

15496.	Question : In order to make a DNA fingerprint, which of the following enzyme are used to digest the DNA ?
Answer» MALTASE, lactase, sucrase Restriction DIGESTION, restriction endonuclease Peptidase - nucleopeptidase Hexokinase DEHYDROGENASE Solution :Restriction digestion, restriction endonuclease

Discussion

15497.	Question : In order to find out the different types of gametes produced by a pea plants having the genotype Aa Bb, it should be crossed to a plant with the genotype
Answer» AABB AaBb AABB aabb SOLUTION :aabb

Discussion

15498.	Question : In order to link the alien DNA the vector needs to have very few, preferably single ……… for the commonly used restriction enzymes.
Answer» ORI RECOGNITION SITES INSERTIONAL sites circular sites Answer :B

Discussion

15499.	Question : In order to lessen the suffering of Phenylalanie and no tyrosine
Answer» no PHENYLALANINE and no TYROSINE normal recommended amount of phenylalanine low phenulalanine and normal requirement of tyrosine normal recommended amount of both phenylalanine and tyrosine Answer :C

Discussion

15500.	Question : In order to induce the bacterial uptake ofplasmids, the bacteria are made competent by treating them with
Answer» SODIUM chloride Potassium chloride Magnesium chloride Calcium chloride Answer :D

Discussion

Explore topic-wise InterviewSolutions in .

Question : In Pickles, jams and jellies, the invaded bacteria die due to

Question :In photosystem I, the first electron acceptor is:

Question : In photosynthetic ' Quinone cycle' the number of electrons transferred from PQH_2to Cytochrome b_6is

Question : In photosynthetic bacteria, reaction centre and reducing agent are _______ and _______ respectively :-

Question : In photosynthesis , oxygen is liberated due to

Question : In photosynthesis, splitting of water takes placeduring

Question : In photosynthesis , chlorophyll serves as

Question : In photorespiration, releases of one molecule of CO_(2) requires an input of how many molecules of O_(2)

Question : Inphotosynthesis _____ acts as the hydrogen carrier.

Question : In photorespiration ____ number of ATP molecules are produced.

Question : In phenylketonuria, the amino acid (i) is not converted into (ii). Select the correct option to fill in the blanks (i) & (ii)

Question :In pedigree method of hybridization up to which generation the plants are tested and released for cultivation

Question : In pedigree method of hybridisation upto which generation the plants tested and released for cultivation

Question : In pedigree analysis the symbol represents :-

Question : In peas ………….. Is dominant trait with respect to pod colour

Question : In pea type of ovule is

Question :In pea plants , yellow seeds are dominant to green . If a heterozygous yellow seeded plant is crossed with a green seeded plant , what ratio of yellow and green seeded plants would you expect in F_1 - generation ?

Question : In pea flowers, there are five petals, the largest (A) overlaps the two lateral petals (B) which in turn overlap the two smallest anterior petals (C Name A, B and (1) C

Question : In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seed pant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in F, generation?

Question : In Pea plant, when homozygous round seeded plant is crossed with homozygous wrinkled seeded plant, then the offsprings will be :-

Question : In pea plants, yellow seeds ar dominant to green. If a heterozygous yellow seeded plant is crossed with a green seeded plant, what raito of yellow and green seeded plants would you expected in F_(1) generation?

Question : In Pavlov's experiments, which of the following was used as a stimulus for development of an acquired reflex?

Question : In passive absorption of water, the concerned force develops from the root.

Question : In paracentric inversion

Question : In papaya, male and female flowers are present in separate plants. They are said to be _____

Question : In Papaya, male and female flowers are present in separate plants. They are said to be

Question : In papaya,the flowers are:

Question : In ovule meiosis occurs in :

Question : In overy we can find (i) primary follicle , (ii) Graafina follicle (iiii) blood vessel , (iv) corpus luteum

Question : In ovary which structure transforms as corpus luteum and name the hormone secreted by corpus luteum ?

Question : In outbreeding..........

Question :In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?

Question :In our society a woman is often blamed for not bearing male child. Do you think it is right? Justify.

Question : In our society a woman is often blamed for not bearing male child. Do you think it is right? Justify.

Question : In our country, how many plant species are critically endangered ?

Question : In ornithine cycle, which of the following wastes are removed from the blood –

Question : In Ornithophily , the agents for cross pollination are ____________

Question :In organisms vestigial organs are formed because of

Question : In ornithine cycle, enzyme arginase breaks down arginine into

Question : In order trees , the inner annual rings are called :

Question : In order to obtain virus-free plants through tissue culture the best method is Or In Crop Improvement Programmer Virus Free clones can be obtained Through Which of the following methods is/are used in recovery of healthy plants from diseased plants

Question : In order to ssediment free ribosomes, centrifugation required is

Question : In order to obtain the. F_1 generation Mendel pollinated a pure-breeding tall plant with a pure breeding dwarf plant. But for getting the F_2 generation, he simply self-pollinated the tall F_1 plants. Why?

Question : In order to make a DNA fingerprint, which of the following enzyme are used to digest the DNA ?

Question : In order to find out the different types of gametes produced by a pea plants having the genotype Aa Bb, it should be crossed to a plant with the genotype

Question : In order to link the alien DNA the vector needs to have very few, preferably single ……… for the commonly used restriction enzymes.

Question : In order to lessen the suffering of Phenylalanie and no tyrosine

Question : In order to induce the bacterial uptake ofplasmids, the bacteria are made competent by treating them with

Question : In photosynthetic bacteria, reaction centre and reducing agent are _ and _ respectively :-