24277 + Interview Questions in Biology in Class 12 Page 106 InterviewSolution

5251.	Question : The pairing of homologous chromosomes is called ……….. .
Answer» CROSSING over terminalization synapsis bivalent Answer :C

Discussion

5252.	Question : The pair of nitrogen base of nucleotides are wrong
Answer» THYMIN, uresil - PYRIMIDINE uresil, cytosin pyrimidine GUANINE, ADENINE PURINE adenine, thymin purine Solution :adenine, thymin purine

Discussion

5253.	Question : The pair of anticodons do not exist in such nitrogenous bases, whose triplet codons occurs in open situation in …………………
Answer» m-RNA r-RNA t-RNA s-RNA SOLUTION :t-RNA

Discussion

5254.	Question : The packing unit of chromosomes is_____
Answer» ANSWER :NUCLEOSOME

Discussion

5255.	Question : The pacesetter in the heart is called_____.
Answer» A.V node Papillary muscle Purkinje's fibre S.A node Answer :A

Discussion

5256.	Question : The P_(50) value decreses in all of the following conditions,except
Answer» FALL in` pCO_2` INCREASE in BPG level Fall in tempareture Fall in `[H^+]` ions Answer :B

Discussion

5257.	Question : The packaged structure of DNA in prokaryotes is called as
Answer» Nucleosome Nucleoid Chromatin Nucleolemma Answer :B

Discussion

5258.	Question : Ozone is found in the ____ layer of the atmosphere.
Answer» STRATOSPHERE MESOSPHERE TROPOSPHERE EXOSPHERE SOLUTION :Troposphere

Discussion

5259.	Question : The oxygenreleasedduringphotosynthesis ofgreen plants comes from thebreakdown of whichone of the following ?
Answer» CARBON dioxide Fatty ACIDS Carbohydrates Water Solution :The oxygen releaseddring PHOTOSYNTHESIS of green plantscomes fromthe BREAKDOWN of water i.e., photolysis of waterduring lightphase ofphotosynthesis.

Discussion

5260.	Question : The oxygen liberated during the photosynthesis given by Engelmann using all , except
Answer» Filamentousgreen alga CLADOPHORA Unicellular green alga CHLORELLA SUPENSION of aerobic bacteria Prism to SPLIT the light in the its components Answer :B

Discussion

5261.	Question : The Ozone Day is observed every year on September 16 as on this day in 1987 the _______ was signed for launching efforts to arrest the depletion of the fragile ozone layer in the stratosphere that prevents the harmful ultra violet rays of the sun from reaching the earthh, Fill the correct word in blank.
Answer» MONTREAL PROTOCOL Geneva Protocol Kyoto Protocol Nagoya Protocol Solution :Montreal Protocol

Discussion

5262.	Question : The ozone layer is presentin
Answer» THERMOSPHERE STRATOSPHERE mesosphere lithosphere Answer :B

Discussion

5263.	Question : The oxygen evolvedduringphotosynthesiscomes fromspliting of
Answer» water CARBON DIOXIDE oxygen light SOLUTION :Oxygenis evolvedduring thephotosynthesisby a process knownas photolysis. During this process,water MOLECULES SPLIT to release oxygen.

Discussion

5264.	Question : The oxygen -haemoglobin dissociation curve will show a right shift in case of
Answer» HIGH `pCO_(2)` High `pO_(2)` Low `pCO_(2)` LESS `H^(+)` concentration Answer :A

Discussion

5265.	Question : The ovules develop on the inner wall of the ovary on peripheral part in which type of placentation?
Answer» Axile Parietal Marginal Basal Answer :B

Discussion

5266.	Question : The ovum is surrounded by four membranes. How can a sperm enter and fuse with the female pronuclei?
Answer» Solution :Sperm produces antifertilizin, sperm lysin ETC. to BREAK the MEMBRANES of the OVUM.

Discussion

5267.	Question : The ovule of angiosperm technically equivallent to
Answer» (A) MEGASPORE mother CELL (B) megaspore © MEGASPORANGIUM (D) mega sporphyll Answer :C

Discussion

5268.	Question : The ovule of angiosperm equals to what?
Answer» megasporangium Megaspore leaf megaspore MOTHER cell Megaspore ANSWER :A

Discussion

5269.	Question : The ovule is attached to the placenta by a small stalke which is known as(A) Hilum(B) Funicle(C) Nucellus(D) Chalaza
Answer» Hilum Funicle Nucellus Chalaza Answer :B

Discussion

5270.	Question : The ovule is attached to the placenta by a stalk called ………… .
Answer» integument funicle synergid antipodal cells Answer :B

Discussion

5271.	Question : The overy in hypogynous flowers is said to be
Answer» Half-inferior Inferior Superior None of above. Answer :C

Discussion

5272.	Question : The overgrowth of algae due to phosphate can take up oxygen in water and kill other aquatic life. This is called ……….. .
Answer» biodegradation biomagnification BOD entrophication Answer :D

Discussion

5273.	Question : The overgrowth of cacti was checked by the introduction of:
Answer» PREYING mantis Cochineal insect Mycoherbicide Lady bugs Answer :B

Discussion

5274.	Question : The overall goal of glycolysis, Krebs cycle and the electron transport system is the formation of
Answer» ATP in SMALL stepwise units ATP in one LARGE oxidation reaction Sugars Nucleic acids ANSWER :A

Discussion

5275.	Question : The over growth of algae in water which have high nutrients
Answer» SOLUTION :ALGAL BLOOM

Discussion

5276.	Question : The overall goal of glycolysis, Krebs' cycle and the electron transport system is the formation of:
Answer» ATP in ONE large OXIDATION reaction Sugars Nucleic acids ATP in small STEPWISE units Answer :D

Discussion

5277.	Question : The over all reaction of the Calvin cycle is
Answer» `3RUBR +3 CO_(2) + 9 ATP + 6 NADPH + H^(+) rarr 3PGA + 9 ADP + 9Pi +6NADP^(+)` `3RUBR +3CO_(2) + 6 ATP + 6 NADPH + H^(+) rarr 3PGA + 6 ADP + 6Pi +6NADP^(+)` `3RUBR +3 CO_(2) + 9 ATP + 6 NADPH + H^(+) rarr 6 G - 3P + 9 ADP + 6 NADP^(+) + 9Pi` `3RUBR +3 CO_(2) + 6 ATP + 6 NADPH + H^(+) rarr 6 G - 3P + 6 ADP + 6 NADP^(+) + 5Pi` ANSWER :C

Discussion

5278.	Question : The ovary develops into seed.
Answer» ANSWER :FRUIT

Discussion

5279.	Question : The outermost and innnermost wall layers of microsporangium in an anther are respectively
Answer» endothecium and tapetum EPIDERMIS and endodermis epidermis and MIDDLE layer epidermis and tapetum Solution :The wall layers of a microsporangium from outermost to innermost are : epidermis, endothecium, middle layers and tapetum. The first three layers generally provide PROTECTION and help in DEHISCENCE of anther. Tapetum performs nutritive FUNCTION for pollen grains.

Discussion

5280.	Question : The outermost and innermost wall layers of microsporangium in an anther are respectively(A) Endothecium and tapetum(B) Epidermis and endodermis(C) Epidermis and middle layer(D) Epidermis and tapetum
Answer» Endothecium and tapetum Epidermis and endodermis Epidermis and middle layer Epidermis and tapetum Solution :A TYPICAL spore is generally COVERED by FOUR walled layers. Means epidermis at the outer most side PROTECTIVE layer, endothecium, (endothecium in middle layer) and tapetum (tapetum at the INNERMOST side)

Discussion

5281.	Question : The outer most layer of endosperm of Maize grain is called
Answer» Scutellum Perisperm Aleurone layer Tunica Answer :C

Discussion

5282.	Question : The outermost and innermost wall layers of microsporagium in an anther are respectively
Answer» ENDOTHECIUM and tapetum Epidermis and endodermis Epidermis and MIDDLE layer Epidermis and tapetum Answer :D

Discussion

5283.	Question : Tonoplast is the membrane covering of:
Answer» ANSWER :TONOPLAST

Discussion

5284.	Question : The outer wall of the pollen grain is called ……….
Answer» ANSWER :EXINE

Discussion

5285.	Question : The outer covering of the human heart_____.
Answer» ANSWER :PERICARDIUM

Discussion

5286.	Question : The outer covering of tbe non-myelinated neurons in brain is
Answer» Neurilemma Axolemma Sarcolemma Oolemma Answer :B

Discussion

5287.	Question : The other term for _____ reaction is called calvin cycle.
Answer» ANSWER :DARK

Discussion

5288.	Question : the other name for autoimmune thyroiditis is :
Answer» ADDISON's DISEASE Cushing's disease Simmond's disease HASHIMOTO's disease ANSWER :D

Discussion

5289.	Question : The osmostic potential of cell ‘X’ 1s -5 MPa and that of cell ‘Y’ is -12 MPa, the pressure potential of cell “X’ is 4 MPa and that of cell ‘Y’ is 4 MPa. Therefore, water
Answer» SHOWS no movement MOVES in both directions Moves from CELL ‘X’ to cell 'Y’ Moves from cell 'Y’ to cell ‘X’ Answer :C

Discussion

5290.	Question : The origin of universe occurred about
Answer» 15-20 BILLION YEARS AGO 30-40 billion years ago 40-50 billion years ago 50-60 billion years ago ANSWER :A

Discussion

5291.	Question : The origin of life on the earth is known as ………. .
Answer» autobiogenesis abiogenesis protobiogenesis organogenesis Answer :C

Discussion

5292.	Question : The origin of kidney and ureter in Rana tigrina is :
Answer» all mesodermal all endodermal ectodermal and mesodermal mesodermal Answer :A

Discussion

5293.	Question : The Oriental and Australian regions are divided by
Answer» Wallace's LINE Weber's line Sclater's LIFE Both (1) and (2) Answer :D

Discussion

5294.	Question : The organs which are similar in their function but dissimilar in structure are know as ………………. .
Answer» ANALOGOUS CONNECTIVE LINK VESTIGIAL organ Homologous SOLUTION :Analogous

Discussion

5295.	Question : The organs of the plant body showing limited dimensions are1) fruits II) flowers III) leaves IV) stems and roots
Answer» I, II, III and IV I, II and III only III and IV only III only Answer :B

Discussion

5296.	Question : The organization which publishes the Red List of species is :
Answer» ICFRE IUCN UNEP WWF SOLUTION :IUCN

Discussion

5297.	Question : The organisms which thrive in a very narrow range of temperatures are known as
Answer» Stenothermal Poikilothermal Homiothermal EURYTHERMAL ANSWER :A

Discussion

5298.	Question : The organisms which thrive in a wide range of temperature is called as
Answer» Stenothermal Poikilothermal Homiothermal EURYTHERMAL ANSWER :D

Discussion

5299.	Question : The organization which published the red list of species is
Answer» WWF IUCN ZSI UNEP Answer :B

Discussion

5300.	Question : The organisms which are tolerant of a wide range of salinities are
Answer» Salinitroph Euryhaline Salinohaline STENOHALINE ANSWER :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : The pairing of homologous chromosomes is called ……….. .

Question : The pair of nitrogen base of nucleotides are wrong

Question : The pair of anticodons do not exist in such nitrogenous bases, whose triplet codons occurs in open situation in …………………

Question : The packing unit of chromosomes is_____

Question : The pacesetter in the heart is called_____.

Question : The P_(50) value decreses in all of the following conditions,except

Question : The packaged structure of DNA in prokaryotes is called as

Question : Ozone is found in the ____ layer of the atmosphere.

Question : The oxygenreleasedduringphotosynthesis ofgreen plants comes from thebreakdown of whichone of the following ?

Question : The oxygen liberated during the photosynthesis given by Engelmann using all , except

Question : The ozone layer is presentin

Question : The oxygen evolvedduringphotosynthesiscomes fromspliting of

Question : The oxygen -haemoglobin dissociation curve will show a right shift in case of

Question : The ovules develop on the inner wall of the ovary on peripheral part in which type of placentation?

Question : The ovum is surrounded by four membranes. How can a sperm enter and fuse with the female pronuclei?

Question : The ovule of angiosperm technically equivallent to

Question : The ovule of angiosperm equals to what?

Question : The ovule is attached to the placenta by a small stalke which is known as(A) Hilum(B) Funicle(C) Nucellus(D) Chalaza

Question : The ovule is attached to the placenta by a stalk called ………… .

Question : The overy in hypogynous flowers is said to be

Question : The overgrowth of algae due to phosphate can take up oxygen in water and kill other aquatic life. This is called ……….. .

Question : The overgrowth of cacti was checked by the introduction of:

Question : The overall goal of glycolysis, Krebs cycle and the electron transport system is the formation of

Question : The over growth of algae in water which have high nutrients

Question : The overall goal of glycolysis, Krebs' cycle and the electron transport system is the formation of:

Question : The over all reaction of the Calvin cycle is

Question : The ovary develops into seed.

Question : The outermost and innnermost wall layers of microsporangium in an anther are respectively

Question : The outermost and innermost wall layers of microsporangium in an anther are respectively(A) Endothecium and tapetum(B) Epidermis and endodermis(C) Epidermis and middle layer(D) Epidermis and tapetum

Question : The outer most layer of endosperm of Maize grain is called

Question : The outermost and innermost wall layers of microsporagium in an anther are respectively

Question : Tonoplast is the membrane covering of:

Question : The outer wall of the pollen grain is called ……….

Question : The outer covering of the human heart_____.

Question : The outer covering of tbe non-myelinated neurons in brain is

Question : The other term for _____ reaction is called calvin cycle.

Question : the other name for autoimmune thyroiditis is :

Question : The osmostic potential of cell ‘X’ 1s -5 MPa and that of cell ‘Y’ is -12 MPa, the pressure potential of cell “X’ is 4 MPa and that of cell ‘Y’ is 4 MPa. Therefore, water

Question : The origin of universe occurred about

Question : The origin of life on the earth is known as ………. .

Question : The origin of kidney and ureter in Rana tigrina is :

Question : The Oriental and Australian regions are divided by

Question : The organs which are similar in their function but dissimilar in structure are know as ………………. .

Question : The organs of the plant body showing limited dimensions are1) fruits II) flowers III) leaves IV) stems and roots

Question : The organization which publishes the Red List of species is :

Question : The organisms which thrive in a very narrow range of temperatures are known as

Question : The organisms which thrive in a wide range of temperature is called as

Question : The organization which published the red list of species is

Question : The organisms which are tolerant of a wide range of salinities are