4951 + Interview Questions in Biology in Class 10 Page 25 InterviewSolution

1201.	Question : The source of male sex hormones is
Answer» INTERSTITIAL cells of the TESTIS cells LINING the seminal vesicles cells lining vas DEFERENS the ACROSOMAL vesicles Answer :A

Discussion

1202.	Question : The sound-producing organ in singing bird is
Answer» VOCAL sacs syrinx larynx synsacrum ANSWER :B

Discussion

1203.	Question :The solar energy which falls on the atmosphere, reaches the Earth's surface ............
Answer» a LITTLE LESS than 42% more than 60% more than 52% a little less than 47% Solution :a little less than 47%

Discussion

1204.	Question : The smallest bone is mammals is
Answer» septomaxillary dentary femur stapes Answer :D

Discussion

1205.	Question : The smallest blood vessel in the body is a
Answer» capillary artery vena cava vein ANSWER :A

Discussion

1206.	Question : The size of ………………….is determined by the rates of birth and death.
Answer» ANSWER :POPULATION

Discussion

1207.	Question : The size of population is determined through birthrate and deathrate of organisms.
Answer» ANSWER :1

Discussion

1208.	Question : The site from where the nerve impulse for hearing originates in mammals is
Answer» EAR ossicles cochlea tympanum vestibule Answer :B

Discussion

1209.	Question : The simplest form of nervous system that integrates body activities is found in cnidarians and is called a
Answer» nerve-trunk SYSTEM LADDER system nerve-net system nerve-cord system Answer :C

Discussion

1210.	Question : The similarity between giraffe, rabbit, camel, bat and whale is that all of them have
Answer» nucleated RBC four CHAMBERED stomach SEVEN CERVICAL vertebrae enucleated RBC Answer :C

Discussion

1211.	Question : The simple organic compounds that may have first evolved in the direction of origin of life on Earth may have been
Answer» protein and AMINO ACID protein and NUCLEIC acid urea and nucleic acid urea and amino acid Answer :B

Discussion

1212.	Question : The silent valley in Kerela is a/an,
Answer» HOTSPOT WILDLIFE SAFARI PARK BIOSPHERE reserve Arboreta Answer :A

Discussion

1213.	Question : The Siberian crane from Russia is a regular visitor to the bird sanctuary in which place in India?
Answer» Lallbagh, Bangalore Vedanthgol SANCTUARY, TAMIL Nadu Ranganathathittis sanctuary, Karnataka Bharatpur sanctuary, Rajasthan Answer :D

Discussion

1214.	Question : The sex of the new born child is a matter of chance and neither of the parents may be considered responsible for it.What would be the possible fusion of gametes to determine the sex of the child?
Answer» SOLUTION :Out of 23 pairs of chromosomes, 22 pairs are autosomes and ONE pair (`23^(rd)` pair) is the sex chromosome. The female gametes or the EGGS formed are similar in their chromosome type [22x+XX]. So human females are homogametic. The male gametes or sperms produced are of two types. They are produced in EQUAL proportions. The sperm bearing [22+X] chromosomes and the sperm bearing (22+Y) chromosomes. So human males are called heterogametic. It is a chance, as to which CATEGORY of sperm fuses with the egg. If the egg [X] is fused by the X-bearing sperm an [XX] individual (female) is produced. If the egg [X] is fused by the Y-bearing sperm an [XY] individual (male) is produced. The sperm produced by the father, determines the sex of the child. The mother is not responsible in determining the sex of the child.

Discussion

1215.	Question : The sex of child depends upon chromosome present in :
Answer» Egg of FEMALE Sperm of male Both (A) and (B) NONE of these Answer :C

Discussion

1216.	Question : State True or False. The sex determination in human being occurs right at the time when the fertilisation occurs therein.
Answer» ANSWER :1

Discussion

1217.	Question : The segments of leech are known as
Answer» METAMERES (SOMITES) PROGLOTTIDS Strobila All the above ANSWER :A

Discussion

1218.	Question : The seed contains future plant or embryo which develops into a seedling under appropriateconditions by the process called ___________ .
Answer» SOLUTION :GERMINATION

Discussion

1219.	Question : The seed contains food for the flower.
Answer» SOLUTION :False - Seed contains FOOD for the DEVELOPING embryo.

Discussion

1220.	Question : The secretion of the following pituitary hormones is controlled by hypothalamus
Answer» Thyrotropin (TSH) and cortisol FOLLICLE STIMULATING hormone (FSH) and progesterone Corticotropin (ACTH) GROWTH hormone (GH) and vasopressin Luteinizing hormone (LH), corticotropin (ACTH) and thyrotropin (TSH) ANSWER :D

Discussion

1221.	Question : The secondary or intermediate host of Taenia is
Answer» pig dog man snail ANSWER :A

Discussion

1222.	Question : The second cranial nerve is called
Answer» olfactory oculomotor optic ophthalmic Answer :C

Discussion

1223.	Question : The Scratch editors consists of ....................main parts.
Answer» 2 3 4 5 Solution :3

Discussion

1224.	Question : The scientist related with the theory of spontaneous generation and experiments with swan-necked flasks is
Answer» VAN Helmont LOUIS Pasteur Miller Haeckel Answer :B

Discussion

1225.	Question : The scientific process which produces crop plant enriched with desirable nutrients is called________.
Answer» SOLUTION :BIOFORTIFICATION

Discussion

1226.	Question : The science, which deals with classification, identification and names of organisms, is called
Answer» Systematics Physiology Ecology Biology ANSWER :A

Discussion

1227.	Question : The Sargasso Sea gets its name because of the presence of algae belonging to class
Answer» chlorophycea rhodophycea phaeophycea xanthophycea ANSWER :C

Discussion

1228.	Question : The right and left ventricles are separated by ................. .
Answer» SOLUTION :INTER VENTRICULAR SEPTUM

Discussion

1229.	Question : Sacred groves are conserved by ................ .
Answer» SOLUTION :BIODIVERSITY

Discussion

1230.	Question : The richest source of fossils is
Answer» basalt granite lava SEDIMENTARY rock Answer :D

Discussion

1231.	Question : The ribosomes of prokarytoers are of 70 S type ribosomes and while of eukaryotes are of 80 S type as well as 70 S type. Name two cell organelles of eukaryotic cells which have their own independent ribosomes of 70 S type
Answer» SOLUTION :Mitcohondria and chloropolast.

Discussion

1232.	Question : The ribosomes of prokarytoers are of 70 S type ribosomes and while of eukaryotes are of 80 S type as well as 70 S type. Give the composition of 70 S type ribosomes and 80 S type ribosome (two sum units, from each of them are made of)
Answer» SOLUTION :70 S RIBOSOMES have 50 S and 30 S sum units, 80 S ribosomes have 60 S and 40 S sum units.

Discussion

1233.	Question : The results of a test cross reveal that all the offspring resemble the parent being tested. This parent must be
Answer» heterozygous homozygous recessive haploid Answer :B

Discussion

1234.	Question : The responsible factors for rapid spread of rhizopus on piece of bread are ……………...... (1) more amount of spores. (2) getting moist and mineral nutrients from the bread. (3)presence of branched tubular hyphae. ( 4) round spores having sporangium.
Answer» (1) and ( 3) ( 2) and (4) (1) and (2) (3) and (4) Answer :A::B::D

Discussion

1235.	Question : The reproduction process is to preserve individual species and is called .. .........
Answer» SOLUTION :Self-perpectuation

Discussion

1236.	Question : The replacement of defective Gene in germ cell (egg or sperm) is called ....
Answer» SOLUTION :GERM LINE GENE THERAPY

Discussion

1237.	Question : The region of the chromosome where the spindle fibre get attached during cell division.
Answer» Chromomere Centrosome Centromere CHROMONEMA ANSWER :C

Discussion

1238.	Question : The region occupied by DNA in a bacterial cell is termed as
Answer» nucleoplasm nuclein nucleosome nucleoid ANSWER :D

Discussion

1239.	Question : The reduction of weight in the beetle due to starvation ……………………………..is trait.
Answer» ANSWER :ACQUIRED

Discussion

1240.	Question : The 'Red list' which contains the names of endangered species is prepared by………….
Answer» WWF IUCN IPCC UNEP Solution :IUCN

Discussion

1241.	Question : The recent techniques used for separating fragments of DNA is
Answer» NORTHERN bloting southern bloting eastern bloting WESTERN bloting Answer :B

Discussion

1242.	Question : The reason why some mutations, which are harmful, do not get eliminated from gene pool is that
Answer» they are recessive and carried by heterozygous individuals they are DOMINANT and show up more frequently genetic DRIFT OCCUR because of a small population they have future survival value Answer :A

Discussion

1243.	Question : The real source of variation is _____
Answer» SOLUTION :DOMINANT, recesive

Discussion

1244.	Question : The reactions of photosynthesis make up a biochemical pathway. What are the reactants and products for both light and dark reactions.
Answer» <P> Solution :(a) Light reactions are carried out in the THYLAKOID membranes (Grana) of the chloroplast which use WATER and energy from the Sun to produce NADPH, ATP and Oxygen. The Dark reaction is carried out in the STROMA of chloroplast. It uses NADPH, ATP and `CO_2`and produces NADP + ADP + P and high energy sugars. (b) The Light reactions use light to synthesize ATP and NADPH. The dark reaction or Calvin cycle uses these reactants to produce sugar from additional `CO_2`molecule. This cycle then produces `NAP + ADP+P_i`(inorganic phosphate) which is used in the light reactions, with water molecules to produce ATP and NADPH again.

Discussion

1245.	Question : The reaction between lead nitrate and potassium iodide solutions is an example for what types of chemical reaction? Explain. Write the balanced chemical equation for this reaction.
Answer» Solution :On mixing, TWO colourless solutions of LEAD nitrate and POTASSIUM iodide yellow precipitate is formed. `PB(NO_3)_2(aq) + 2KItoPbI_2(s) + 2KNO_3(aq) This is an example for a chemical reaction (double displacement) in which formation of precipitate is OBSERVED.

Discussion

1246.	Question : The reabsorption of glucose in a nephron occurs in
Answer» loop of Henle first HALF of PROXIMAL tubule distal CONVOLUTED tubule proximal part of collecting ducts Answer :B

Discussion

1247.	Question : The ratio of number of chromosomes in a human zygote and a human sperm is :
Answer» `2:1` `3:1` `1:2` `1:3` SOLUTION :N//A

Discussion

1248.	Question : The rate of breathing in aquatic organisms is faster than that of terrestrial animals
Answer» Solution :True - This is becauseaquatic ANIMALS TAKE in `O_(2)`which is dissolved in water. It is much less than that PRESENT in air and hence their breathing rate is faster.

Discussion

1249.	Question : The radius of curvature of a mirror is 20 cm focal length is :
Answer» 20 cm 10 cm 40 cm 5 cm ANSWER :A::C

Discussion

1250.	Question : The pyramid of number of individuals per unit area in grassland ecosystem will be
Answer» ERECT INVERTED both (a) and (B) NONE of the above ANSWER :A

Discussion

Explore topic-wise InterviewSolutions in .

Question : The source of male sex hormones is

Question : The sound-producing organ in singing bird is

Question :The solar energy which falls on the atmosphere, reaches the Earth's surface ............

Question : The smallest bone is mammals is

Question : The smallest blood vessel in the body is a

Question : The size of ………………….is determined by the rates of birth and death.

Question : The size of population is determined through birthrate and deathrate of organisms.

Question : The site from where the nerve impulse for hearing originates in mammals is

Question : The simplest form of nervous system that integrates body activities is found in cnidarians and is called a

Question : The similarity between giraffe, rabbit, camel, bat and whale is that all of them have

Question : The simple organic compounds that may have first evolved in the direction of origin of life on Earth may have been

Question : The silent valley in Kerela is a/an,

Question : The Siberian crane from Russia is a regular visitor to the bird sanctuary in which place in India?

Question : The sex of the new born child is a matter of chance and neither of the parents may be considered responsible for it.What would be the possible fusion of gametes to determine the sex of the child?

Question : The sex of child depends upon chromosome present in :

Question : State True or False. The sex determination in human being occurs right at the time when the fertilisation occurs therein.

Question : The segments of leech are known as

Question : The seed contains future plant or embryo which develops into a seedling under appropriateconditions by the process called ___________ .

Question : The seed contains food for the flower.

Question : The secretion of the following pituitary hormones is controlled by hypothalamus

Question : The secondary or intermediate host of Taenia is

Question : The second cranial nerve is called

Question : The Scratch editors consists of ....................main parts.

Question : The scientist related with the theory of spontaneous generation and experiments with swan-necked flasks is

Question : The scientific process which produces crop plant enriched with desirable nutrients is called________.

Question : The science, which deals with classification, identification and names of organisms, is called

Question : The Sargasso Sea gets its name because of the presence of algae belonging to class

Question : The right and left ventricles are separated by ................. .

Question : Sacred groves are conserved by ................ .

Question : The richest source of fossils is

Question : The ribosomes of prokarytoers are of 70 S type ribosomes and while of eukaryotes are of 80 S type as well as 70 S type. Name two cell organelles of eukaryotic cells which have their own independent ribosomes of 70 S type

Question : The ribosomes of prokarytoers are of 70 S type ribosomes and while of eukaryotes are of 80 S type as well as 70 S type. Give the composition of 70 S type ribosomes and 80 S type ribosome (two sum units, from each of them are made of)

Question : The results of a test cross reveal that all the offspring resemble the parent being tested. This parent must be

Question : The responsible factors for rapid spread of rhizopus on piece of bread are ……………...... (1) more amount of spores. (2) getting moist and mineral nutrients from the bread. (3)presence of branched tubular hyphae. ( 4) round spores having sporangium.

Question : The reproduction process is to preserve individual species and is called .. .........

Question : The replacement of defective Gene in germ cell (egg or sperm) is called ....

Question : The region of the chromosome where the spindle fibre get attached during cell division.

Question : The region occupied by DNA in a bacterial cell is termed as

Question : The reduction of weight in the beetle due to starvation ……………………………..is trait.

Question : The 'Red list' which contains the names of endangered species is prepared by………….

Question : The recent techniques used for separating fragments of DNA is

Question : The reason why some mutations, which are harmful, do not get eliminated from gene pool is that

Question : The real source of variation is _____

Question : The reactions of photosynthesis make up a biochemical pathway. What are the reactants and products for both light and dark reactions.

Question : The reaction between lead nitrate and potassium iodide solutions is an example for what types of chemical reaction? Explain. Write the balanced chemical equation for this reaction.

Question : The reabsorption of glucose in a nephron occurs in

Question : The ratio of number of chromosomes in a human zygote and a human sperm is :

Question : The rate of breathing in aquatic organisms is faster than that of terrestrial animals

Question : The radius of curvature of a mirror is 20 cm focal length is :

Question : The pyramid of number of individuals per unit area in grassland ecosystem will be