24277 + Interview Questions in Biology in Class 12 Page 195 InterviewSolution

9701.	Question : Raju went to a Rice Research Station on his study tour. There he noticed a scientist working on rice plant using scissors and forceps. To his surprise he saw the scientist covering the inflorescences with paper bags. Name the techniques the scientist was doing.
Answer» SOLUTION :EMASCULATION

Discussion

9702.	Question : Raju went to a rice research station on his study tour. There he noticed a scientist working on rice plants using scissors and forceps. To his surprise he saw the scientist covering the inflorescence with paper bags. Name the techniques the scientist was doing.
Answer» SOLUTION :EMASCULATION and BAGGING

Discussion

9703.	Question : Raju is searching blight resistant plants for his crossing experiments. Unfortunately no such varieties are available. a. Suggest a process to create such plants. b. Justify your suggested method.
Answer» SOLUTION :a. Mutation breeding or genetic engineering. B. Both the above methods can generate new CHARACTERS which are not to PRESENT in the ORIGINAL plant.

Discussion

9704.	Question : Raju is searching blight resistant plant for his crossing experiments. Unfortunately no much varieties are available. Suggest a process to create such plants.
Answer» SOLUTION :MUTATION BREEDING / GENETIC ENGINEERING

Discussion

9705.	Question : Raj having genotype AaBBCc for skin colour marries simran having genotypeAAbbCc for skin colour . What is the change that they have a child whose skin colour doesn't match with either Raj's or Simran 's ?
Answer» `12.5%` `16.67%` `25%` `50%` ANSWER :C

Discussion

9706.	Question : Raising crop on the resulting ash due to firing of trees is called as
Answer» DESERTIFICATION Deforestation JHUMING Sooting ANSWER :C

Discussion

9707.	Question : Raising of crops for the production of ethanol is known as
Answer» BIOMASS production agrotechnology Energy cropping Energy plantation Answer :C

Discussion

9708.	Question : ____raises lower jaw.
Answer» ANSWER :MASSERTER

Discussion

9709.	Question : Rahul had some good variety of tobacco plants, which were infected by virus. He wants to produce new disease free plants from the old plants. As a student of biology, can you give advice to Rahul for producing virus free plants?
Answer» Solution :I ADVICE him to do meristem CULTURE because ALTHOUGH the plants are INFECTED by virus, the meristem will be free of virus.

Discussion

9710.	Question : Rain is called aced rain which Ph is below :
Answer» 7 6.5 6 5.6 Answer :D

Discussion

9711.	Question : Rag pickersdo a greatjob for ournation. Justify the statement .
Answer» Solution :The solid wastescan be categories into 3types a)BIODEGRADABLE b) Recyclable &non biodegradable .The biodegradable WASTE MATERIAL can bedisposedin deeppits fornatural breakdown.Recyclingof materialis MADE easyby theseparationdone byrag pickers .

Discussion

9712.	Question : Ragi rich food helps to overcome bone related ailments - justify.
Answer» Solution :Ragi (Finger MILLET) is a KIND of millet which has LESS glycemic index and rich in CALCIUM. Hence consuming ragi FOOD items enhances the bone strength.

Discussion

9713.	Question : Radioisotopic technique was used to prove some facts about :
Answer» light REACTION of photosynthesis biosynthetic PHASE of photosynthesis Both (A) and (B) Different shapes of CHLOROPLASTS in plants Answer :C

Discussion

9714.	Question : Radioactive waste management.
Answer» Solution :(1)Radioactive MATERIALS emit radioactivity which is very harmful to life.therefore the radioactive material is closely protected before its disposal.(2)However,ATOMIC explosions,atomic reactiors,INADVERTENT accidents can cause LARGE quantity of radioactive material to enter into the ecosystem.(3)Radioactive wastes from the atomic reactors are normally buried by land filling.(4)Deep pits are dug in desert areas or in the sea bottom to dispose radioactive wastes.(5)These pits are capped by concrete to AVOID the leakage and contamination.

Discussion

9715.	Question : Radioactive wastes are usually by product of :(A) Nuclear technology(B) Nuclear power generation(C) Electronic goods(D) Nuclear harvesting
Answer» NUCLEAR technology Nuclear POWER generation Electronic goods Nuclear HARVESTING ANSWER :B

Discussion

9716.	Question : Radioactive carbon dioxide (.^14CO_2) is added to suspension of a photosynthesising green alga. Which compound will be labelled first with .^14CO_2 ?
Answer» GLUCOSE RUBP GP(PGA) TRIOSE phosphate Answer :C

Discussion

9717.	Question :Radioactive isotope of oxygen (O_(18))was used to know the source of oxygen released through Photosynthesis by
Answer» HILL VAN NEIL Ruben and Kamen Hatch and Slack Answer :C

Discussion

9718.	Question : Radioactive C - dating and living fossils are used for
Answer» BIOLOGICAL age Geological age Age of Rock Geographical distribution Answer :A

Discussion

9719.	Question : Radioactive C-dating and living fossils are used for -
Answer» Biological age Geological age Age of Rock Geographical distribution Solution :Geological age and Age of rock is generally done by K -AR method or U - Pb method Carbon DATING method is USED to ESTIMATE the biological age

Discussion

9720.	Question : Radiations with successfuladaptations in case of insects is a result of
Answer» GENETIC divergence Micro-evolution Macro-evolution Mega-evolution Answer :C

Discussion

9721.	Question : Radiationby nuclearwasteis extremelydangeroustoarganism a) write any twodangers b)write the recommendations for thestorageof nuclearwaste .
Answer» SOLUTION :a) Causesmutationat a veryhigh RATEAT highdoesnuclearradiationis LETHAL.

Discussion

9722.	Question : ___________radiations have high penetrability.
Answer»

Discussion

9723.	Question : Radiation is a health hazard because it causes
Answer» Haemophilia Leukaemia Pneumonia Leucopenia Answer :B

Discussion

9724.	Question : Radial nerves are seen connecting to a central nerve ring in
Answer» SEA ANEMONE Sea fan Sea star Sea mouse Answer :C

Discussion

9725.	Question : Rabi orientation of chromosomes during cell cycle
Answer» helps in BREAKAGE of CHROMOSOMES into chromatids increased coordination netween chromosomes and centrioles helps is interaction of non-sister chromatids acts as a STIMULUS OFR condensation of chromosomes Answer :B

Discussion

9726.	Question : r-RNA
Answer» SOLUTION :

Discussion

9727.	Question : r- DNA is also called as
Answer» CHIMERIC DNA Hybrid DNA-RNA Recombinant of VECTOR DNA and DESIRED gene/s Both (A) and (C) SOLUTION :Both (A) and (C)

Discussion

9728.	Question : r-DNA is directly injected into the nucleus of an animal cell is known as
Answer» Gene gun method BIOLISTIC method MICRO injection method Both (1) and (2) ANSWER :C

Discussion

9729.	Question : Quiescent centre theory for demonstrating apical organisation in root was proposed by
Answer» Schuepp Hanstein Clowes Nageli Answer :C

Discussion

9730.	Question : Quiescent centre occurs at the centre of:
Answer» ROOT Root apex shoot Shoot apex Answer :B

Discussion

9731.	Question : Quercus species are the dominant component in
Answer» SCRUB forests tropical RAIN forests temperate deciduous forests alpine forests Answer :C

Discussion

9732.	Question : QUESITION
Answer» OPTION 1 OPTION 2 OPTION 3 OPTION 4 Solution :SOLUTON

Discussion

9733.	Question : Quercus species are dominant component
Answer» Temperate FOREST TROPICAL RAIN forest Alpine forest SCRUB forest ANSWER :A

Discussion

9734.	Question : Quercus species are the dominant component in :
Answer» SCRUB foreste TROPICAL forest Temperate DECIDUOUS FORESTS Alpine forests Answer :C

Discussion

9735.	Question :Quantum 4000 is effective pest for cereals and vegetable crops is prepared by which microbes ?
Answer» Вt cotton Methanogens PSEUDOMONAS TRICHODERMA SOLUTION :Pseudomonas

Discussion

9736.	Question : Queens of bombus affinis is ____________for Aquilegia spurs.
Answer» Pollinator Pollen Robber Nectar Robber More than ONE OPTION is correct Answer :D

Discussion

9737.	Question : Quantitative comparisions between growth of the living systems can be made by –
Answer» ABSOLUTE GROWTH rate Relative growth rate Exponential growth rate Both (1) & (2) Answer :D

Discussion

9738.	Question : Quantasome it is a group of pigment molecules required for carrying out a photochemical reaction. II. Consists of 200-240 chlorophyll molecules, carotenoids, quinone compounds , sulpholipids , phospholipids protenis , etc. III.is present on the thylakoid membranes as a small unit. IV.absorbs only blue and violet wavelength in vitro.
Answer» II and IV Only I Only III I,II and III Answer :D

Discussion

9739.	Question : Quality of light refers to
Answer» intensity of LIGHT FREQUENCY of light WAVELENGTH of light DURATION of light ANSWER :C

Discussion

9740.	Question : Pyruvic acid, the key product of glycolysis can have many metabolic fates. Under aerobiccondition it forms
Answer» LACTIC acid `CO_(2)+H_(2)O` ACETYL `CoA+CO_(2)` ETHANOL `+CO_(2)` Answer :C

Discussion

9741.	Question : Pyruvate undergoes oxidative decarboxylation to produce ……
Answer» 2-PGA `ALPHA`-ketoglutarate Succinyl-Co-A Acetyl Co-A Answer :D

Discussion

9742.	Question : Pyruvate undergoes oxidative decarboxylation to form ………… .
Answer» ACETYL Co-A 3-PGA 2-PGA gulcose-6-phosphate Answer :A

Discussion

9743.	Question : What are "indicators of fire"?
Answer» SOLUTION :Pyronema conftuens is a fungus which grow on the soil of burnt or fire DISTURBED AREAS. HENCE it is called as INDICATOR of fire.

Discussion

9744.	Question : Pyrenoids are the centres for formation of
Answer» porphyra enzyes fat STARCH Solution :(d) Pyrenoid is a seat of synthesis and STORAGE of starch present in the chloroplast of algae.A pyrenoidhas a CORE of protein AROUND which starch is deposited as layers.

Discussion

9745.	Question : Pyrenoids are the centre of formation of:
Answer» Proteins Fats Starch Enzymes Answer :C

Discussion

9746.	Question : Pyramid of numbers is :
Answer» ALWAYS UPRIGHT Always inverted. ETHER upright or inverted NEITHER upright nor inverted. Answer :C

Discussion

9747.	Question : Pyramid of numbers deals with number of
Answer» SPECIES in an area Individuals in a immunity Individuals in a TROPHIC level Subspecies in a community Answer :C

Discussion

9748.	Question : Pyramid of numbers in a freshwater pond ecosystem is
Answer» IRREGULAR type Inverted type Upright type Spindle SHAPED type Answer :C

Discussion

9749.	Question : Pyramid of energy is never been inverted. Why?
Answer» SOLUTION :Pyramid of energy is always UPRIGHT, can never inverted because when energy flows from a PARTICULAR trophic level to the NEXT trophic level, some energy is always lost as heat at each STEP.

Discussion

9750.	Question : Pyramid of energy is always upright. Give reasons.
Answer» SOLUTION :The energy pyramid represents a SUCCESSIVE energy flow at each trophic level in an ecosystem. There is a gradual DECREASE in energy transfer at successive tropic levels from PRODUCERS to higher levels, hence the pyramid of energy is ALWAYS upright.

Discussion

Explore topic-wise InterviewSolutions in .

Question : Raju went to a Rice Research Station on his study tour. There he noticed a scientist working on rice plant using scissors and forceps. To his surprise he saw the scientist covering the inflorescences with paper bags. Name the techniques the scientist was doing.

Question : Raju went to a rice research station on his study tour. There he noticed a scientist working on rice plants using scissors and forceps. To his surprise he saw the scientist covering the inflorescence with paper bags. Name the techniques the scientist was doing.

Question : Raju is searching blight resistant plants for his crossing experiments. Unfortunately no such varieties are available. a. Suggest a process to create such plants. b. Justify your suggested method.

Question : Raju is searching blight resistant plant for his crossing experiments. Unfortunately no much varieties are available. Suggest a process to create such plants.

Question : Raj having genotype AaBBCc for skin colour marries simran having genotypeAAbbCc for skin colour . What is the change that they have a child whose skin colour doesn't match with either Raj's or Simran 's ?

Question : Raising crop on the resulting ash due to firing of trees is called as

Question : Raising of crops for the production of ethanol is known as

Question : ____raises lower jaw.

Question : Rahul had some good variety of tobacco plants, which were infected by virus. He wants to produce new disease free plants from the old plants. As a student of biology, can you give advice to Rahul for producing virus free plants?

Question : Rain is called aced rain which Ph is below :

Question : Rag pickersdo a greatjob for ournation. Justify the statement .

Question : Ragi rich food helps to overcome bone related ailments - justify.

Question : Radioisotopic technique was used to prove some facts about :

Question : Radioactive waste management.

Question : Radioactive wastes are usually by product of :(A) Nuclear technology(B) Nuclear power generation(C) Electronic goods(D) Nuclear harvesting

Question : Radioactive carbon dioxide (.^14CO_2) is added to suspension of a photosynthesising green alga. Which compound will be labelled first with .^14CO_2 ?

Question :Radioactive isotope of oxygen (O_(18))was used to know the source of oxygen released through Photosynthesis by

Question : Radioactive C - dating and living fossils are used for

Question : Radioactive C-dating and living fossils are used for -

Question : Radiations with successfuladaptations in case of insects is a result of

Question : Radiationby nuclearwasteis extremelydangeroustoarganism a) write any twodangers b)write the recommendations for thestorageof nuclearwaste .

Question : ___________radiations have high penetrability.

Question : Radiation is a health hazard because it causes

Question : Radial nerves are seen connecting to a central nerve ring in

Question : Rabi orientation of chromosomes during cell cycle

Question : r-RNA

Question : r- DNA is also called as

Question : r-DNA is directly injected into the nucleus of an animal cell is known as

Question : Quiescent centre theory for demonstrating apical organisation in root was proposed by

Question : Quiescent centre occurs at the centre of:

Question : Quercus species are the dominant component in

Question : QUESITION

Question : Quercus species are dominant component

Question : Quercus species are the dominant component in :

Question :Quantum 4000 is effective pest for cereals and vegetable crops is prepared by which microbes ?

Question : Queens of bombus affinis is ____________for Aquilegia spurs.

Question : Quantitative comparisions between growth of the living systems can be made by –

Question : Quality of light refers to

Question : Pyruvic acid, the key product of glycolysis can have many metabolic fates. Under aerobiccondition it forms

Question : Pyruvate undergoes oxidative decarboxylation to produce ……

Question : Pyruvate undergoes oxidative decarboxylation to form ………… .

Question : What are "indicators of fire"?

Question : Pyrenoids are the centres for formation of

Question : Pyrenoids are the centre of formation of:

Question : Pyramid of numbers is :

Question : Pyramid of numbers deals with number of

Question : Pyramid of numbers in a freshwater pond ecosystem is

Question : Pyramid of energy is never been inverted. Why?

Question : Pyramid of energy is always upright. Give reasons.