24277 + Interview Questions in Biology in Class 12 Page 435 InterviewSolution

21701.	Question : Aristotle proposed the theory of abiotic origin of life.
Answer» ANSWER :A.I.Oparin

Discussion

21702.	Question : Aristotle's lantern is found in :
Answer» Sponges Mollusca Arthropoda Echinodermata Answer :D

Discussion

21703.	Question : Aristotle believed that fishes originated from mud, insects from decaying meat, frog from moist soil etc. Do you agree with this statement? If no, give reason.
Answer» Solution :No. LOUIS Pasteur disapproved this THEORY. Louis Pasteur’s SWAN neck experiment.

Discussion

21704.	Question : Argentaftin cells occur in
Answer» Duodenum Stomach Ileum Both B and C. Answer :D

Discussion

21705.	Question : Areolar connective tissue joins
Answer» BONES with muscles Bones with bones Fat BODY with muscle Integument with musc1e Answer :D

Discussion

21706.	Question : Area of retina devoid of rods and cones is
Answer» YELLOW SPOT Blind spot BLUE spot BLACK spot Answer :B

Discussion

21707.	Question : (a)Rearrange the following in an ascending order of evolutionary tree: Reptiles. salamander, lobe fins and frogs (b) Name two reproductive characters that probably make reptiles mare successful than amphibians.
Answer» Solution :(a) Lobe Fins lt Frogs lt Salamander lt Reptiles (B) Reptiles are more successful than amphibians because (i) They show internal FERTILIZATION (II)Their eggs are thick-shelled which do not dry up in sun like those ofamphibians (i) Presence of amnion (EMBRYONIC MEMBRANE).

Discussion

21708.	Question : Area of most active vision in eye where sharp imuge is formed is called :
Answer» BLIND SPOT YELLOW spot LENS Pupil Answer :D

Discussion

21709.	Question :_________are viruses which parasitise cyanobacteria.
Answer» ANSWER :CYANOPHAGE

Discussion

21710.	Question : _________are vascular cryptogams.
Answer» ANSWER :PTERIDOPHYTA

Discussion

21711.	Question :Are the thorn of Bougainvillea and tendril of cucurbita homologous or analogousr What type of evolution has brought such a similarity in them?
Answer» SOLUTION : They are HOMOLOGOUS organ. Divergent EVOLUTION has brought such a similarity in them.

Discussion

21712.	Question :Are there any base triplets that code for amino acids and also for start signals? Name these.
Answer» SOLUTION :YES, AUG and GUG.

Discussion

21713.	Question : _______are the sole members of kingdom monera.
Answer» Bacteria Algae Protozoa Sporozoa Answer :A

Discussion

21714.	Question : What are the nurse cells for spermatozoa.
Answer» LEYDIG cells Germinal cells Sertoli cells Spermatids Answer :C

Discussion

21715.	Question : Are the hearts and brain of different classes of vertebtates homologous or analogous?
Answer» SOLUTION :Both HEARTS and brains of vertebrates are homoigous organs.They INDICATE COMMON ANCESTRY of these organisms.

Discussion

21716.	Question : Aresanitary landfillsa practical solution of disposesoild waste ? Why ?
Answer» Solution :No . Landfills are not really much of a solution sincethe AMOUNTOF garbagegeneration speicallyin the METROS has increased so muchthat thesesites are gettingfilledtoo. Also there is dangerof seepageof CHEMICALS from theselandfillspolluting the undergroundwaterresources.

Discussion

21717.	Question : _____________are the birds grown for providing meat.
Answer» ANSWER :BROILERS

Discussion

21718.	Question : Are pollination and fertilisation necessary in apomixis ? Give reasons
Answer» Solution :In apomixis pollination and fertilisation are not necessary. The reason for its support are as follows: (i) Embryo is formed without meiosis from MEGASPORE. Ovules are DIPLOID and CONVERTED into embryo. (ii) Embryo is formed from the cells of diploid nucellus in which egg CELL is diploid. It gets converted into embryo by non fertilised GENETIC way

Discussion

21719.	Question : ____________are major aerosal pollutant present in jet air craft emission.
Answer» ANSWER :A::B::C

Discussion

21720.	Question : Are parthenocarpy and apomixis different phenomena? Discuss their benefits
Answer» Solution :Yes non-fertlised fruit development and apomixis both are different methods. Importance of non-fertilised fruit development: (i) The method of producing fruits WITHOUT fertilisation of ovule is called non fertilised fruit development. This method is used for development of seedless fruits commercially eg. Banana, Grapes. (ii) This method is more useful in fruit juice industries. Importance of Apomixis: (i) During Apomixis neither chromosomes separate nor connect. So CHARACTERISTICS are maintained till many generations. (ii) Commercial HYBRID production can be EASILY explained because there is no need for isolation process for either maintaining parent offspring or to separate FIRST generation. (iii) Adventive embryoni is used for typical root mass and to produce virusless species.

Discussion

21721.	Question : _____are chemical produced by some microbes and can kill the other microbes.
Answer» ANSWER :ANTIBIOTICS

Discussion

21722.	Question :are called as suicidal bags.
Answer» GAS vacuoles Autophagic vacuoles Food vacuoles Contractile vacuoles Answer :B

Discussion

21723.	Question : _______are a group of interbreeding natural population.
Answer» ANSWER :SPECIES

Discussion

21724.	Question : Archenteron is cavity in
Answer» BLASTULA Gastrula Zygote Morula Answer :B

Discussion

21725.	Question : Archenteron is surrounded by :
Answer» Ectoderm Endoderm Mesoderm Blastomeres Answer :B

Discussion

21726.	Question : Archegoniophore is present in
Answer» Chara Adiantum Funaria Marchantia Solution :(d) In Marchantia, a bryophyte, the archegonia (FEMALE sex ORGANS) are borne on special BRANCHES CALLED archegoniophore or female receptacles. Each archegoniophore has rows of archegonia protected by INVOLUCRE or perichaetium.

Discussion

21727.	Question : Arched palate· uniformed sized teeth were found in which of the following ancestors?
Answer» Ramapithecus Kenyapithecus DRYOPITHECUS SHIVAPITHECUS ANSWER :A

Discussion

21728.	Question : Archaeopteryx, toothed fossil bird, occurred during
Answer» JURASSIC Triassic CRETACEOUS PERMIAN ANSWER :B

Discussion

21729.	Question : Archaeopteryx is connecting link between
Answer» REPTILES and birds Reptiles and MAMMALS FISHES and Amphibians Non-chordatesand chordates Answer :A

Discussion

21730.	Question : Archaeopteryx is the connecting link between
Answer» FISHES and amphibians amphibians and reptiles reptiles and birds aves and mammals Answer :C

Discussion

21731.	Question : Archaeopteryx is a connecting link between
Answer» REPTILES and BIRDS Birds and mammals Amphibians and reptiles NONE of these SOLUTION :Reptiles and birds

Discussion

21732.	Question : Archaeopteryx is called connecting link between reptiles and brids.
Answer» Solution :(1) Archaeopteryx is a fossilized bird that represents the connecting link between reptiles and birds. (2) This fossilized bird was discovered in 1861 by Andreas Wagner. The second specimen was found in 1877 and was named as Archaeronis. (3) Archaeopteryx shows reptilian as well as avian characters. (4) Reptilian characters : (i) Jaws with homodont (all similar) teeth. (ii) Ribs have a single head. (III) Abdominal ribs present which are like the crocodilian ribs. (iv) Forearms have three digits ending in distinct claws while the hind limb has four digits ending in CLAWED digits. (5) Avian characters : (i) Forearms modified into wings. (ii) Feathery exoskeleton. (iii) Skull bones are COMPLETELY fused. (iv) Cranium is rounded with large orbits and a single CONDYLE. (v) Jaws are modified into beak. (vi) Limb bones have first toe in opposable manner, Foot present with clawed digits.

Discussion

21733.	Question : Arbuscular mycorrhizae is a symbiotic association between ……… .
Answer» a) Algae and fungi B) ANGIOSPERM roots and fungi c) Blue gren algae and AZOLLA fern d) Cyanobacteria and corolloid root Answer :B

Discussion

21734.	Question : Arachid onic acid ha s a carboxyl group attached to an R group. This R group contain:-
Answer» 16 carbons 15 carbons 20 carbons 19 carbons Answer :D

Discussion

21735.	Question : Arabia gossipae produces
Answer» Lipase RIBOFLAVIN STREPTOKINASE STEROID SOLUTION :Riboflavin

Discussion

21736.	Question : Aquatic animals which can tolerate only a narrow range of salinity are said to be:
Answer» EURYHALINE STENOHALINE Poikilotherms Catadromous ANSWER :B

Discussion

21737.	Question : Aqueous chamber and vitreous chamber are separated by
Answer» iris PUPIL LENS cornea ANSWER :C

Discussion

21738.	Question : Aquatic weed is ......
Answer» TERROR of BENGAL Terror of TAMIL Terror of Begin Terror of BANGLA Answer :C

Discussion

21739.	Question : Aquaporin density is more on
Answer» Tonoplasm Tonoplast NUCLEAR membrane Thylakoid membrane Answer :B

Discussion

21740.	Question : Aquatic animals that are able to move at will through the water:
Answer» Nekton Neuston Plankton All of these Answer :A

Discussion

21741.	Question : Aquatic animals are mostly amonotelic because :
Answer» theseget less light water contains less NITROGEN excretion of ammoniarequires LARGE amount to water which is available to these animals ammonia helps in CHECKING inflow of water into body Solution :Animals CONSUMING less WATERARE urotellic

Discussion

21742.	Question : Aquaculture involves production of
Answer» usual AQUATIC PLANTS useful aquatic animals useful aquatic plants and animlas f harmful aquatic PLANTSAND animals Answer :C

Discussion

21743.	Question :Aprotoxin is
Answer» a primitive TOXIN a DENATURED toxin toxin PRODUCED by protozoa inactive toxin ANSWER :d

Discussion

21744.	Question : Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs
Answer» As BICARBONATE ions In the form of dissolved GAS molecules By binding to R.B.C. As carbamino - haemoglobin Answer :A

Discussion

21745.	Question : Approximately how many eggs are produced by a normal healthy human female up to the age of 25 years if the age of menarche is 12 years ……. .
Answer» 169 416 240 100 Answer :A

Discussion

21746.	Question : Approximately how much of the solar energy that falls on the leaves of a plant is converted to chemical energy by photosynthesis ?
Answer» LESS than `1%` `2-10%` `30%` `50%` SOLUTION :Except for the deep SEA hydrothermal ecosystem, sun is the only source of energy for all ecosystems on earth of the incident solar radiation less then 50 per cent of its photosynthetically active radiation (PAR) and 2 to `10 %` of solar energy is obtained by autotrophs and is converted into CHEMICAL energy by the process of photo synthesis.

Discussion

21747.	Question : Approximately how much of the solar energy that falls on the leaves of a plant is converted to chemical energy by photosynthesis?
Answer» LESS than 1% 2-10% 0.3 0.5 Answer :B

Discussion

21748.	Question : Approximate number of chlorophlyll molecules required to evolve one molecule of O_2 are
Answer» 2480 MOLECULES 2280 molecules 2180 molecules 2275 molecules ANSWER :A

Discussion

21749.	Question : Approximate time required by a diffusing particle across a plant cell about 50 mum is
Answer» 2.5 minute 2.5 SECONDS 25 seconds 0.25 seconds Answer :B

Discussion

21750.	Question : Approximate count of base pair in human genome is …………………..
Answer» SOLUTION :`3XX10^(9)` BP

Discussion

Explore topic-wise InterviewSolutions in .

Question : Aristotle proposed the theory of abiotic origin of life.

Question : Aristotle's lantern is found in :

Question : Aristotle believed that fishes originated from mud, insects from decaying meat, frog from moist soil etc. Do you agree with this statement? If no, give reason.

Question : Argentaftin cells occur in

Question : Areolar connective tissue joins

Question : Area of retina devoid of rods and cones is

Question : (a)Rearrange the following in an ascending order of evolutionary tree: Reptiles. salamander, lobe fins and frogs (b) Name two reproductive characters that probably make reptiles mare successful than amphibians.

Question : Area of most active vision in eye where sharp imuge is formed is called :

Question :_________are viruses which parasitise cyanobacteria.

Question : _________are vascular cryptogams.

Question :Are the thorn of Bougainvillea and tendril of cucurbita homologous or analogousr What type of evolution has brought such a similarity in them?

Question :Are there any base triplets that code for amino acids and also for start signals? Name these.

Question : _______are the sole members of kingdom monera.

Question : What are the nurse cells for spermatozoa.

Question : Are the hearts and brain of different classes of vertebtates homologous or analogous?

Question : Aresanitary landfillsa practical solution of disposesoild waste ? Why ?

Question : _____________are the birds grown for providing meat.

Question : Are pollination and fertilisation necessary in apomixis ? Give reasons

Question : ____________are major aerosal pollutant present in jet air craft emission.

Question : Are parthenocarpy and apomixis different phenomena? Discuss their benefits

Question : _____are chemical produced by some microbes and can kill the other microbes.

Question :are called as suicidal bags.

Question : _______are a group of interbreeding natural population.

Question : Archenteron is cavity in

Question : Archenteron is surrounded by :

Question : Archegoniophore is present in

Question : Arched palate· uniformed sized teeth were found in which of the following ancestors?

Question : Archaeopteryx, toothed fossil bird, occurred during

Question : Archaeopteryx is connecting link between

Question : Archaeopteryx is the connecting link between

Question : Archaeopteryx is a connecting link between

Question : Archaeopteryx is called connecting link between reptiles and brids.

Question : Arbuscular mycorrhizae is a symbiotic association between ……… .

Question : Arachid onic acid ha s a carboxyl group attached to an R group. This R group contain:-

Question : Arabia gossipae produces

Question : Aquatic animals which can tolerate only a narrow range of salinity are said to be:

Question : Aqueous chamber and vitreous chamber are separated by

Question : Aquatic weed is ......

Question : Aquaporin density is more on

Question : Aquatic animals that are able to move at will through the water:

Question : Aquatic animals are mostly amonotelic because :

Question : Aquaculture involves production of

Question :Aprotoxin is

Question : Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs

Question : Approximately how many eggs are produced by a normal healthy human female up to the age of 25 years if the age of menarche is 12 years ……. .

Question : Approximately how much of the solar energy that falls on the leaves of a plant is converted to chemical energy by photosynthesis ?

Question : Approximately how much of the solar energy that falls on the leaves of a plant is converted to chemical energy by photosynthesis?

Question : Approximate number of chlorophlyll molecules required to evolve one molecule of O_2 are

Question : Approximate time required by a diffusing particle across a plant cell about 50 mum is

Question : Approximate count of base pair in human genome is …………………..