4951 + Interview Questions in Biology in Class 10 Page 48 InterviewSolution

2351.	Question : Normal haemoglobin content of an adult man 92. All
Answer» 10.5 gm/100 ML of BLOOD 12.5 gm/100 ml of blood 14.5 gm/100 ml of blood 13.5 gm/100 ml of blood ANSWER :C

Discussion

2352.	Question : Normalbloodpressureis ____________.
Answer» SOLUTION :120 MM/ 80 mm HG

Discussion

2353.	Question : Norepinephrine, Isthmus, tyrosine, thyroglobulin.
Answer» SOLUTION :NOREPINEPHRINE

Discussion

2354.	Question : Noise pollution is measured in
Answer» HERTZ FATHOMS NANOMETRES DECIBELS ANSWER :D

Discussion

2355.	Question : Nobel Prize to A. Kornberg and S. Ochoa was given for
Answer» artificial synthesis of DNA and RNA theory of natural selection mutation theory one gene one POLYPEPTIDE CHAIN theory Answer :A

Discussion

2356.	Question : Node of ranvier is found in____
Answer» muscles axons dendrites cyton Answer :B

Discussion

2357.	Question : No two individuals are absolutely alike in a population. Why?
Answer» Solution :No two individuals are ABSOLUTELY ALIKE in a POPULATION DUE to variations taking place during the PROCESS of DNA copying.

Discussion

2358.	Question : NMEP stands for
Answer» National Mosquito ERADICATION Plan National MALARIA Elimination Programme National Malaria Eradication Programme National Malaria Elimination Process ANSWER :C

Discussion

2359.	Question : Nitrosomonas is a
Answer» chemoautotroph photoautotroph chemoheterotroph photoheterotroph ANSWER :A

Discussion

2360.	Question : Nitrates are transformed into nitrogen by
Answer» amrnonifying BACTERIA NITRIFYING bacteria denitrifying bacteria both (a) and (B) ANSWER :C

Discussion

2361.	Question : Nitrates are converted into nitrogen by
Answer» ammonifying BACTERIA denitrifying bacteria nitrogen FIXING bacteria nitrifying bacteria ANSWER :B

Discussion

2362.	Question :Nirenberg used an artificial mRNA poly U (UUU...U) which gave rise to polyphenyl alanine. This proved that
Answer» artificial MRNA was not useful for the study of GENETIC CODE genetic code is triplet triplet UUU code for phenylalanine genetic code is non-overlapping Answer :C

Discussion

2363.	Question : Nine-tenth of all photosynthesis of the world is carried out by
Answer» herbs algae of oceans trees with LARGE branches shrubs ANSWER :B

Discussion

2364.	Question : Night blindness is due to
Answer» EXCESSIVE DRINKING of alcohol excess SECRETION of adrenals vitamin A deficiency inheritance by X-chromosome Answer :C

Discussion

2365.	Question : Nicotine is a narcotic drug.
Answer» Solution :CORRECT STATEMENT: Nicotine is a stimulant, HIGHLY harmful and POISONOUS substance, in Tobacco.

Discussion

2366.	Question : New species may be formed if (i) mating does not take place. (ii) DNA undergoes significant changes in germ cells. (iii) there is no change in genetic material. (iv) chromosome number changes in gametes.
Answer» (i) and (IV) (II) and (iv) (ii) arnd (iii) (i) and (iii) SOLUTION :This is the correct ANSWER.

Discussion

2367.	Question : New species may be formed if: ( 1 ) DNA undergoes significant changes in germ cells. (2) there is no change in the genetic material. (3)mating does not take place.a.(1) and (2)b.(1)c.( 2) and (3)d.(1 ), (2) and (3)
Answer» (1) and (2) (1) ( 2) and (3) (1 ), (2) and (3) ANSWER :A::C::D

Discussion

2368.	Question : New speicesmaybe fromed if
Answer» (i) and (II) (i) and (III) (ii), (iii) and (IV) (i),(ii) and (iii) Solution :NEW species maybe formedif theDNA charges are severe enough, such as a change in thenumberof chromosome. This leadsto new varations.

Discussion

2369.	Question : New nucleotides are added and new complimentary strand of DNA is formed with the help of enzyme DNA polymerase.
Answer» ANSWER :1

Discussion

2370.	Question : Nerve impulse for hearing originates in
Answer» EAR drum cochlea AUDITORY NERVE ear ossicles Answer :B

Discussion

2371.	Question : Nerve cells are NOT found in
Answer» sponges nematodes coelenterates mosquitoes ANSWER :A

Discussion

2372.	Question : Nerve cells are devoid of
Answer» nucleus sarcolemma axon cytoplasm Answer :B

Discussion

2373.	Question : Nerve cells do not possess__
Answer» NEURILEMMA SARCOLEMMA axon dendrites Answer :B

Discussion

2374.	Question : Nephrons, Nitrogenous waste, Scrotal Sac, Urea.
Answer» SOLUTION :SCROTAL SAC

Discussion

2375.	Question : Nephrons are connected with
Answer» RESPIRATORY system nervous system circulartory system expcretory system Answer :D

Discussion

2376.	Question : Nepenthes is
Answer» PRIMARY producer primary producer and CONSUMER consumer saprophyte ANSWER :B

Discussion

2377.	Question : Nematocysts occur in
Answer» cnidocytes endosarc epithelio-muscular cells ectosarc ANSWER :A

Discussion

2378.	Question : Neena is having blood group A-ve while her husband’s blood group is O +ve. Their first child is having blood gp. A +ve. Her second child was born with severe anemia and jaundice. What could be the reason ? How this situation could have been avoided ?
Answer» Solution :During her first PREGNANCY after exposure with blood of her first Rh +ve child, her body prepared ANTIBODIES against Rh antigen in her blood. In second pregnancy these Rh antibodies from mother leaked into the blood of foetus (Rh +ve) and destroyed foetus RBCs. It could cause of severe anemia and Jaundice could be FETAL to the foetus. This situation could have been AVOIDED if she had got herself administered anti, Rh antibodies IMMEDIATELY after first delivery to kill Rh antibodies entered in mother’s blood from foetus.

Discussion

2379.	Question : Neck is absent in frog. This helps the frog in
Answer» JUMPING on ground swimming in water catching prey respiration ANSWER :A

Discussion

2380.	Question : Nature selects favourable characters and eliminates unfavourable ones.
Answer» ANSWER :T

Discussion

2381.	Question : Natural selection is directing evolution in the beetle population. Explain in detail.
Answer» Solution :A group of red beetles LIVE in some bushes with green leaves. Their population will grow by sexual reproduction. Crows are natural predator for beetles. Colour variation arises during reproduction. ONE BEETLE with green colour is formed in the population of red beetles. This beetle passes the changed colour on to its progeny, making progeny beetles green. Crows cannot see green COLOURED beetles on the leaves of the bushes. Thus progeny of green beetles is not eaten, while the progeny of red beetles continues to fall prey. As a result, more green beetles survive than red ones in the beetle population. A rare variation became common characteristic in the population. Because it gave a survival advantage. i.e., it was naturally selected. The natural selection is EXERTED by the crows. The more crows there are, the more red beetles would be eaten and the more the proportion of green beetles would be in the population. Thus, natural selection is directing evolution in the beetle population. It results in adaptations in the beetle population to fit their environment better.

Discussion

2382.	Question : Natural selection is a driving force for evolution-How ?
Answer» SOLUTION :DARWIN published his observation under the name ..origin of species... It elaborates on the theory of natural selectron for evolutionary transformation. The principles of Darwinism tells that NATURE selectrion is a driving force for evolution. 1. Overproduction : Living beings have the ability to reproduce and have the capacity to multiply in a goemetrical manner. 2. Struggle for existence : Due to overproduction a geometric ratio of increase in population occurs . The space to live and food available for organisms remain the same. This creastes a competition among the organisms, for food and space, leading to struggle. (a) The competition may be among the individuals of the same species (Intraspecific struggle) (b) Competition between the organisms of different species living together (Interspecific struggle). (c ) Natural conditions like extreme heat or cold droght and floods can affect the existence of organisms (Environmental struggle). 3. Variations : Small variations are important for evolution. According to Darwin, Favourable variations are useful to the organisms and unfavourable variations are harmful or useless to the organisms. 4. Survival of the fittest or Natural selection : During the struggle for existence, the organisms which can overcome the challenging situation, survive and adapt to the SURROUNDING environment. Organisms, which are unable to face the challenges, are unfit to survive and disappear. The process of selection of organisms with favourable variation is called as Natural selection. 5. Origin of species : According to Darwin, new species originates by the gradual accumulation of favourable variations for number of generations.

Discussion

2383.	Question : Natural parthenogenesis occurs in
Answer» HONEYBEE FROG man rabbit Answer :A

Discussion

2384.	Question : Natural insecticide extracted from chrysanthemum is,
Answer» Rotenone Pyrethrum Thruioside Nicotine Answer :B

Discussion

2385.	Question : Natural ageing of lakes happens due to,
Answer» NUTRIENT enrichment SEWAGE enrichment oxygen enrichment HEAVY METALS enrichment Answer :A

Discussion

2386.	Question : National park is a protected park.
Answer» ANSWER :TRUE

Discussion

2387.	Question : Names of endangered species : Pink pages :: Names of presently safe species :……………
Answer» SOLUTION :GREEN PAGES.

Discussion

2388.	Question : Name two types of nephrons found in human kidney
Answer» SOLUTION :(i) JUXTA medullary nephron (ii) CORTICAL nephron

Discussion

2389.	Question : Which are the two tissues that provide control and co-ordination in animals.
Answer» SOLUTION :NERVOUS TISSUES and MUSCULAR tissues.

Discussion

2390.	Question : Name two sexually transmitted diseases caused by viruses.
Answer» SOLUTION :AIDS, WARTS.

Discussion

2391.	Question : Name two simple organisms having the ability of regeneration.
Answer» SOLUTION : PLANARIA/ Hydra/Earthworm. (Any TWO)

Discussion

2392.	Question : Name two plants which are propagated by layering method.
Answer» SOLUTION :N//A

Discussion

2393.	Question : Name two plants which bear unisexual flowers.
Answer» SOLUTION : PAPAYA, WATERMELON.

Discussion

2394.	Question : Name two parts of the body which contain receptors of chemical stimuli.
Answer» ANSWER :NOSE and TONGUE

Discussion

2395.	Question : Nametwoorganisms whichreproducesthroughbudding .
Answer» SOLUTION :YEAST, HYDRA.

Discussion

2396.	Question : Name two organisms which are now extinct and are studied from their fossils.
Answer» SOLUTION :The EXTINCT animals ARCHAEOPTERYX and Dinosaurs are STUDIED from their FOSSILS.

Discussion

2397.	Question : Name two organisms in which food material is broken down outside the body and absorbed.
Answer» SOLUTION :YEAST, MUSHROOM.

Discussion

2398.	Question : Name two natural ecosystems.
Answer» Solution :Two natural ECOSYSTEMS are : (a) Temperate forest(b) Tropical forest (c) Grassland (d) OCEAN (E) LAKE.

Discussion

2399.	Question : Name two metabolic disorder which can be diagnosed by analysis of urine.
Answer» SOLUTION :GLYCOSURIA, KETONURIA

Discussion

2400.	Question : Name two maize hybrids rich in amino acid lysine.
Answer» Solution :PROTINA, Shakti and Rathna are lysine rich MAIZE hybrids, which are DEVELOPED in INDIA.

Discussion

Explore topic-wise InterviewSolutions in .

Question : Normal haemoglobin content of an adult man 92. All

Question : Normalbloodpressureis ____________.

Question : Norepinephrine, Isthmus, tyrosine, thyroglobulin.

Question : Noise pollution is measured in

Question : Nobel Prize to A. Kornberg and S. Ochoa was given for

Question : Node of ranvier is found in____

Question : No two individuals are absolutely alike in a population. Why?

Question : NMEP stands for

Question : Nitrosomonas is a

Question : Nitrates are transformed into nitrogen by

Question : Nitrates are converted into nitrogen by

Question :Nirenberg used an artificial mRNA poly U (UUU...U) which gave rise to polyphenyl alanine. This proved that

Question : Nine-tenth of all photosynthesis of the world is carried out by

Question : Night blindness is due to

Question : Nicotine is a narcotic drug.

Question : New species may be formed if (i) mating does not take place. (ii) DNA undergoes significant changes in germ cells. (iii) there is no change in genetic material. (iv) chromosome number changes in gametes.

Question : New species may be formed if: ( 1 ) DNA undergoes significant changes in germ cells. (2) there is no change in the genetic material. (3)mating does not take place.a.(1) and (2)b.(1)c.( 2) and (3)d.(1 ), (2) and (3)

Question : New speicesmaybe fromed if

Question : New nucleotides are added and new complimentary strand of DNA is formed with the help of enzyme DNA polymerase.

Question : Nerve impulse for hearing originates in

Question : Nerve cells are NOT found in

Question : Nerve cells are devoid of

Question : Nerve cells do not possess__

Question : Nephrons, Nitrogenous waste, Scrotal Sac, Urea.

Question : Nephrons are connected with

Question : Nepenthes is

Question : Nematocysts occur in

Question : Neena is having blood group A-ve while her husband’s blood group is O +ve. Their first child is having blood gp. A +ve. Her second child was born with severe anemia and jaundice. What could be the reason ? How this situation could have been avoided ?

Question : Neck is absent in frog. This helps the frog in

Question : Nature selects favourable characters and eliminates unfavourable ones.

Question : Natural selection is directing evolution in the beetle population. Explain in detail.

Question : Natural selection is a driving force for evolution-How ?

Question : Natural parthenogenesis occurs in

Question : Natural insecticide extracted from chrysanthemum is,

Question : Natural ageing of lakes happens due to,

Question : National park is a protected park.

Question : Names of endangered species : Pink pages :: Names of presently safe species :……………

Question : Name two types of nephrons found in human kidney

Question : Which are the two tissues that provide control and co-ordination in animals.

Question : Name two sexually transmitted diseases caused by viruses.

Question : Name two simple organisms having the ability of regeneration.

Question : Name two plants which are propagated by layering method.

Question : Name two plants which bear unisexual flowers.

Question : Name two parts of the body which contain receptors of chemical stimuli.

Question : Nametwoorganisms whichreproducesthroughbudding .

Question : Name two organisms which are now extinct and are studied from their fossils.

Question : Name two organisms in which food material is broken down outside the body and absorbed.

Question : Name two natural ecosystems.

Question : Name two metabolic disorder which can be diagnosed by analysis of urine.

Question : Name two maize hybrids rich in amino acid lysine.