24277 + Interview Questions in Biology in Class 12 Page 229 InterviewSolution

11401.	Question : Notochord originates from _____ .
Answer» ANSWER :MESODERM

Discussion

11402.	Question : Nitrogen fixer which shows asscoiation with a fern as well as gymnosperm is :-
Answer» Nostoc Anabaena Oscillatonia Frankia Answer :B

Discussion

11403.	Question : Notochord occurs only in larva of:
Answer» Balanoglossus Amphioxus Herdmania None of these Answer :C

Discussion

11404.	Question : Nitrogen fixation is facilitated by :
Answer» Cu Bateria Zn Mo Answer :D

Discussion

11405.	Question : Notes can be collected , edited and printed using ________
Answer» Paint Scratch Notepad LINUX Answer :C

Discussion

11406.	Question : Note the relationship between the first two words and suggest a suitable word for the 4th place.Geographically Isolated population: Allopatric speciation Reproductively Isolated population:
Answer» SOLUTION :SYMPATRIC SPECIATION

Discussion

11407.	Question : Note the relationship between the first two words and suggest a suitable word for the 4th place.Jurassic period: Age of reptiles Devonian period:
Answer» SOLUTION :AGE of FISHES

Discussion

11408.	Question : Note the relationship between the first two words and suggest a suitable word for the 4th place.a) Finches:Darwin b)BistonBetularia:
Answer» SOLUTION :BERNARD Kettlewell

Discussion

11409.	Question : Nitrogen-fixation in root nodules of Alnus is brought about by
Answer» Bradyrhizobium Clostridium Frankia Azorhizobium Answer :C

Discussion

11410.	Question : Note the relationship between the first two words and suggest a suitableword for the 4th place.a. Purines - Adenine and guanine :: Pyrimidines -b. AUG - Methionine :: AUC -c. Operon concept - Jacob and Monod ::One gene one enzyme theory -d. DNA - Thymine and cytosine :: RNA -e. AUG - initiation codon :: UAA -f. Xeroderma pigmentosum - Skin cancer :: Retinoblastoma -g. Semiconservative method of DNA replication - Watson and Crick ::Transformation experiment -
Answer» Solution : a. Cytosine and thymine b. Isoleucine c. GEORGE Beadle and Edward TATUM d. Cytosine and uracil E. TERMINATION codon f. Cancer of eye g. Frederick Griffith

Discussion

11411.	Question : Nitrogen fixation is
Answer» `N_(2)toNH_(3)` `N_(2)toNo_(3)` `N_(2)to` AMINO acid Both A and B. Answer :D

Discussion

11412.	Question : Note the following words:
Answer» II, IV, VII and IX II , III , V and IX IV , VI , VIII and X III, V , VII and VIII Solution :II, IV, VII and IX

Discussion

11413.	Question : Note on a case study of plastic wastes.
Answer» Solution : As a remedy for plastic wastes, polyblend, a fine powder of recycled modified plastic was developed by experts from R.V. College of Engineering and K.K. Plastics. This mixture is mixed with the bitumen that is used to LAY roads. Polyblend enhanced the bitumen's water repellant PROPERTIES and helped to increase ROAD life by a FACTOR of THREE.

Discussion

11414.	Question : Nitrogen fixation by Rhizobium can be improved with the supply of
Answer» Potassium Phosphorus NITROGEN Calcium SOLUTION :Nitrogen

Discussion

11415.	Question : Nostoc is used as biopesticide/biofertilliser. (Choose correct one)
Answer» TOBACCO budworm Armyworm Beetle Mosquito Answer :D

Discussion

11416.	Question : Nitrite ions are reduced to ammonia by ferredoxin in
Answer» root stem leaves all of these Answer :D

Discussion

11417.	Question : Not a part of limbic lobe or limbic system of brain is
Answer» amygdala HIPPOCAMPUS CEREBELLUM INNER PARTS of cerebrum Answer :C

Discussion

11418.	Question : Nitrite is converted to Nitrate by
Answer» NITROSOMONAS NITROBACTER Pseudomonas Clostridium SOLUTION :Nitrobacter

Discussion

11419.	Question : Not all base -pair subsittuations in DNA alter the activity of the prouct enzyme's activity . Those that do alter the enzymes':
Answer» TOTAL size tertiary STUCTURE SECONDARY stucture ratio of SULPHUR tonitrogen Answer :B

Discussion

11420.	Question : Nitrifying bacteria are
Answer» Nitrosomonas Thiobacillus Nitrocytis Both (1) & (3) ANSWER :D

Discussion

11421.	Question : Nostoc is found in the thallus of ______
Answer» MARCHANTIA Riccia ANTHOCEROS Azolla ANSWER :C

Discussion

11422.	Question : Nitrite is converted to nitrate by:
Answer» Nitrosomonas Nitrobacter Pseudomonas Clostridium Answer :B

Discussion

11423.	Question : Nitrifying bacteria are able to:
Answer» Convert ATMOSPHERIC NITROGEN into soluble forms Convert AMMONIA to nitrate Nitrate to nitrogen None of these Answer :B

Discussion

11424.	Question : Nostoc has a characteristic
Answer» Non-cellulosi CELL wall Uniflagellate zoospore Chlorophyll e Sexual reproduction. Answer :A

Discussion

11425.	Question : Nitrate assimilation is the :-
Answer» OXIDATION of`NO_(2) ^(-)` REDUCTION of `NO_(3) ^(-)` Reduction of `NH_(4) ^(+)` Oxidation of `NO _(3) ^(-) ` to `NO _(2) ^(-)` Answer :B

Discussion

11426.	Question : Nosema locustae is ………… pathogen.
Answer» bacteria fungal protozoan viral Answer :C

Discussion

11427.	Question : Nosema is disease of cows.
Answer» ANSWER :HONEY BEES

Discussion

11428.	Question : Nissl's granules are smooth Endoplasmic Reticulum.
Answer» ANSWER :ROUGH ENDOPLASMIC RETICULUM

Discussion

11429.	Question : Normally one embryo develops in one seed but when an orange seed is squeezed many embryos of different shapes and sizes are seen. Mention how it has happened.
Answer» Solution :The nuceller CELLS SURROUNDING the EMBRYO sac start dividing, protrude into the embryo sac and develop into the embryos. In such SPECIES each OVULE contains many embryosf Occurence of more than one embryo in a seed is referred as polyembryony

Discussion

11430.	Question : Nissl's granules are present in
Answer» CYTON DENDRON Both 1 & 2 Axon Answer :C

Discussion

11431.	Question : Normally polyspermy does not occur. a. What happens if it occurs? b. Which structure prevents polyspermy in ovum?
Answer» SOLUTION :a. Development will not take place. B. FERTILISATION membrane

Discussion

11432.	Question : Nissl's granules are made up of
Answer» RER SER DNA Golgi bodies Answer :A

Discussion

11433.	Question : Norman Borlaugh, known as father of green revolution, has developed new cultivation variety of :
Answer» WHEAT RICE Maize Rye Answer :A

Discussion

11434.	Question : Nine-tenth of al photosynthesis of world (85-90%) is carried out by
Answer» LARGE trees with millions of branches and leaves algae of the ocean chlorophyll containing FERNS of the forest chlorophyll containing ferns of the forest scientists in the laboratories Solution :90% of total phostnthesis is carried out by aquatic plants, CHIEFLY algae (80% in oceans and 10% in FRESHWATER). 10% of total photosynthesis is performed by land plants.

Discussion

11435.	Question : Nilgiri Tahr is an endangered animal.Suggest ways to cxonserve this wild life.
Answer» Solution :In SITU CONSERVATION-(On site conservation)-The protection of BIODIVERSITY in their natural habitats through the protection of ecosystem.e.g.,Biosphere reserve,National park etc.x-situs conservation-(Off site conservation)-The protection of biodiversity which includes keeping the species under DISTINT observations and care.e.g.,Zoological park.

Discussion

11436.	Question : Night visibility of plants is due to
Answer» Radium Keisulguhr (DIATOMACEOUS EARTH) Algin Dinophycean skeleton Answer :B

Discussion

11437.	Question : Night visibility increases in paints having
Answer» Foraminiferan ooze Diatoceous earth Sporozoans Noctiluca. Answer :B

Discussion

11438.	Question : Night blindness is caused due to :
Answer» Hypermatropia Myopia DEFECTIVE CORNEA DEFICIENCY of RHODOPSIN in rods Answer :A

Discussion

11439.	Question : Night blidness deveplos due to deficiency of
Answer» VITAMIN C `B_(12)` Vit K Vit A Answer :D

Discussion

11440.	Question : Night blindness is caused by the deficiency of Vitamin what is the cause of snow blindness.
Answer» Solution :DUE to OZONE hole theUVB rays REACH the earthand itshigh dose causesinflamationof corneacalledsnow-blindness,cataract ETC such an exposurepermanentlydamage the cornea.

Discussion

11441.	Question : Nif' gene for nitrogen fixation in cereal crops like wheat jowar etc., is introduced by cloning
Answer» RHIZOBIUM meliloti Bacillus thuringiensis Rhizopus stolonifer Agrobacterium tumefaciens Answer :A

Discussion

11442.	Question : Nif-genes are introduced in
Answer» legumes pulses pea or grams Nicotiana Answer :D

Discussion

11443.	Question : NIDDM is caused due to
Answer» Deficiency of INSULIN Destruction of beta-cells Reduced in number or lack of insulin receptors on target cells Deficiency of secretions from ISLET of Langerhans Answer :C

Discussion

11444.	Question : Nictitating membrane and vermiform appendix of humans are examples of which type of organs.
Answer» SOLUTION : They are EXAMPLES of VESTIGIAL ORGANS in MAN.

Discussion

11445.	Question : Nicotonic acids are found in _____.
Answer» ANSWER :TABACCO LEAVES

Discussion

11446.	Question : Nicotine function as stimulant because it facilitates the release of :
Answer» Acetylchloline Thyroxine Dopamine Testosterone Answer :A

Discussion

11447.	Question : Niche overlap is
Answer» Mutualism between TWO species ACTIVE COOPERATION between two species Two different parasites on same food Sharing resources between two species ANSWER :D

Discussion

11448.	Question : Niche overlap indicates
Answer» mutualism between TWO species active COOPERATION between two species two different parasite on the same host sharing of ONE or more RESOURCES between the two species Answer :D

Discussion

11449.	Question : Niche overlap indicate
Answer» MUTUALISM between TWO species Active cooperation between two species Two DIFFERENT parasites on the same host SHARING of one or more resources between two species Solution :Sharing of one or more resources between two species

Discussion

11450.	Question : Niche overlap indicates:
Answer» SHARING of ONE or more resouces between the TWO species mutualism between two species active cooperation between two species two DIFFERENT parasities on the same host Answer :A

Discussion

Explore topic-wise InterviewSolutions in .

Question : Notochord originates from _____ .

Question : Nitrogen fixer which shows asscoiation with a fern as well as gymnosperm is :-

Question : Notochord occurs only in larva of:

Question : Nitrogen fixation is facilitated by :

Question : Notes can be collected , edited and printed using ________

Question : Note the relationship between the first two words and suggest a suitable word for the 4th place.Geographically Isolated population: Allopatric speciation Reproductively Isolated population:

Question : Note the relationship between the first two words and suggest a suitable word for the 4th place.Jurassic period: Age of reptiles Devonian period:

Question : Note the relationship between the first two words and suggest a suitable word for the 4th place.a) Finches:Darwin b)BistonBetularia:

Question : Nitrogen-fixation in root nodules of Alnus is brought about by

Question : Nitrogen fixation is

Question : Note the following words:

Question : Note on a case study of plastic wastes.

Question : Nitrogen fixation by Rhizobium can be improved with the supply of

Question : Nostoc is used as biopesticide/biofertilliser. (Choose correct one)

Question : Nitrite ions are reduced to ammonia by ferredoxin in

Question : Not a part of limbic lobe or limbic system of brain is

Question : Nitrite is converted to Nitrate by

Question : Not all base -pair subsittuations in DNA alter the activity of the prouct enzyme's activity . Those that do alter the enzymes':

Question : Nitrifying bacteria are

Question : Nostoc is found in the thallus of ______

Question : Nitrite is converted to nitrate by:

Question : Nitrifying bacteria are able to:

Question : Nostoc has a characteristic

Question : Nitrate assimilation is the :-

Question : Nosema locustae is ………… pathogen.

Question : Nosema is disease of cows.

Question : Nissl's granules are smooth Endoplasmic Reticulum.

Question : Normally one embryo develops in one seed but when an orange seed is squeezed many embryos of different shapes and sizes are seen. Mention how it has happened.

Question : Nissl's granules are present in

Question : Normally polyspermy does not occur. a. What happens if it occurs? b. Which structure prevents polyspermy in ovum?

Question : Nissl's granules are made up of

Question : Norman Borlaugh, known as father of green revolution, has developed new cultivation variety of :

Question : Nine-tenth of al photosynthesis of world (85-90%) is carried out by

Question : Nilgiri Tahr is an endangered animal.Suggest ways to cxonserve this wild life.

Question : Night visibility of plants is due to

Question : Night visibility increases in paints having

Question : Night blindness is caused due to :

Question : Night blidness deveplos due to deficiency of

Question : Night blindness is caused by the deficiency of Vitamin what is the cause of snow blindness.

Question : Nif' gene for nitrogen fixation in cereal crops like wheat jowar etc., is introduced by cloning

Question : Nif-genes are introduced in

Question : NIDDM is caused due to

Question : Nictitating membrane and vermiform appendix of humans are examples of which type of organs.

Question : Nicotonic acids are found in _____.

Question : Nicotine function as stimulant because it facilitates the release of :

Question : Niche overlap is

Question : Niche overlap indicates

Question : Niche overlap indicate

Question : Niche overlap indicates: