4951 + Interview Questions in Biology in Class 10 Page 32 InterviewSolution

1551.	Question : The food chain that starts from plants and goes from smaller to larger animals is
Answer» predator FOOD chain SAPROPHYTIC food chain detritus food chain PARASITIC food chain ANSWER :A

Discussion

1552.	Question : The food coming from stomach is _________ and is made alkaline by _________
Answer» SOLUTION :ACIDIC, BILE

Discussion

1553.	Question : The food chain in which microorganisms break down the energy rich compounds synthesised by producers is
Answer» detritus FOOD chain predator food chain consumer food chain PARASITIC food chain ANSWER :A

Discussion

1554.	Question : The following is aerobic, free living nitrogen fixing soil bacterium
Answer» Rhizobium Clostridium Azotobacter Pseudomonas ANSWER :C

Discussion

1555.	Question : The following groups of organisms represent differenl trophic levels.Which out of these four has the greatest biomass?
Answer» HERBIVORES Carnivores AUTOTROPHS DECOMPOSERS ANSWER :C

Discussion

1556.	Question : The flow of energy in the ecosystem unidirectional.
Answer» Solution :(i) Theultimate source of energy is any ecosystem is the sun. (ii) Part of the energy RECEIVED by and ecosystem from the Sun is stored in FOOD molecules by plants. (iii) When this energy is transferred from one trophic level to another trophic level, some part of energyisreleased in the form of heat and some part is utilized for METABOLISM. (IV) No energy in the ecosystem GOES back to the Sun. (v) Thus, the flow of energy in the ecosystem is unidirectional.

Discussion

1557.	Question : The flow of energy between various components of the environment has been extensively studied. Give an outline of the findings.
Answer» Solution :Flow of energy between various components of the environment are a result of interaction AMONG various components. It can be said that : (i) These interactions result in flow of energy from one component to another. (ii) The flow of energy is unidirectional. (iii) Autotrophs/Plants capture Sun.s energy and convert it to chemical energy. (iv) SINCE energy is converted from one form to another, so much of it is lost. Plants capture only 1% of Sun.s energy (v) This energy supports all the activities in the world. (vi) From autotrophs, 10% energy is available for the heterotrophs, the next trophic level. (vii) HENCE, a food chain can support only 3-4 trophic levels, as little energy is available for supporting more trophic levels. (viii) The number of producers are always maximum, in any food chain. The number of individuals in subsequent trophic levels goes on decreasing, progressively. (ix) Since each organism is eaten by more than one organism, hence food webs are more common. (x) Harmful, non-biodegradable chemicals continue to accumulate as we move higher in the food chain, due to Biological magnification.

Discussion

1558.	Question : The floral parts are usually pentamerous (5 in number ) in
Answer» DICOTS monocots gymnosperms all of these ANSWER :A

Discussion

1559.	Question : The flightless birds Rhea, Kiwi & Emu respec tively belong to which countries?
Answer» South AMERICA, NEW Zealand and Australia Africa, Australia & New Zealand North America, Japan & Africa Africa, Australia and Japan ANSWER :A

Discussion

1560.	Question : The flask-shaped organ A at the centre of a flower is surrounded by a number of little stalks B having swollne tops which lie just inside the ring of petals. (a) Name A. What are the various parts of A ? (b) Which part of A contains gametes ? (c) Name B. What is the swollen top of B known as ? (d) What does the swollen top pf B contain ? (e) Out of A and B, which one is (i) male part, and (ii) female part of the flower ?
Answer» SOLUTION :N//A

Discussion

1561.	Question : The first successfully cloned mammal that gained world-wide publicity was
Answer» Molly, a sheep Polly, a sheep CHANCE, a BULL DOLLY, a sheep Answer :D

Discussion

1562.	Question : The first step in taxonomy is
Answer» description identification naming classification ANSWER :B

Discussion

1563.	Question : The first step in genetic engineering as
Answer» ISOLATION of protein purification of protein isolation of GENETIC material isolation of RNA Answer :C

Discussion

1564.	Question : The first product of pyruvic acid in Mitochondria
Answer» Isocitric ACID Malic acid CITRIC acid Oxaloacetic acid Answer :D

Discussion

1565.	Question : The first plants to reappear in a badly burned forest area will most probably be
Answer» LIVERWORTS FEMS GRASSES mosses ANSWER :B

Discussion

1566.	Question : The first phylum with complete digestive sys tem was
Answer» cnidaria nematoda arthropoda chordata ANSWER :B

Discussion

1567.	Question :The first organisms were
Answer» PRIMITIVE EUKARYOTES AEROBIC bacteria prokaryotic HETEROTROPHS photosynthetic Answer :D

Discussion

1568.	Question : The first hormone to be isolated was
Answer» thyroxine testosterone epinephrine secretin Answer :D

Discussion

1569.	Question : The first hormone artificially produced culturing bacteria is
Answer» INSULIN thyroxine testosterone adrenalin Answer :A

Discussion

1570.	Question : The first genetic material was most likely
Answer» a DNA polymer a DNA OLIGONUCLEOTIDE a protein an RNA polymer Answer :D

Discussion

1571.	Question : The first division of zygote is
Answer» TRANSVERSE VERTICAL LONGITUDINAL NONE of the above ANSWER :A

Discussion

1572.	Question : The first animals to have nervous were probably similar to modern
Answer» sponges flatworms cnidarians annelids Answer :C

Discussion

1573.	Question : The fine network of membrane distributed throughout the cytoplasm in a cell is
Answer» GOLGI BODY ENDOPLASMIC RETICULUM chromatin Iysosomes SOLUTION :N/A

Discussion

1574.	Question : The filaments of certain algae breaks again and again and each part develops as individual algae. Which type of process is this ?a.Buddingb.Fragmentationc.Binary fissiond.Multiple fission
Answer» BUDDING FRAGMENTATION BINARY FISSION MULTIPLE fission Answer :A

Discussion

1575.	Question : The figure given alongside shows the human male reproductive organs. Which structures make sperms and seminal fluid ?
Answer» V MAKES sperms and X makes SEMINAL fluid W makes sperms and Y makes seminal fluid X makes sperms and W makes seminal fluid Y makes sperms and V makes seminal fluid Solution :N//A

Discussion

1576.	Question : The fertilisation cone, which pulls the sperm into the egg, is formed from
Answer» ACROSOME of the sperm acrosomal PROCESS of the sperm vitelline LAYER of the egg plasma MEMBRANE of the egg Answer :D

Discussion

1577.	Question : The ferns are usually found
Answer» NEAR MARSHY places shady, cool, MOIST places in marshy places in dry climate Answer :B

Discussion

1578.	Question : The female part of the flower is ...............
Answer» Androecium Anemophily GYNOECIUM Micropyle Solution :Gynoecium

Discussion

1579.	Question :The fatty streak, plaque leads to the narrowing of blood vessels lead to ..............
Answer» Ischemia Psychotherapy Emphysema d Solution :ATHEROSCLEROSIS

Discussion

1580.	Question : The father of Plant Anatomy is …….
Answer» MELVIN Calvin C.N.R.Rao ROBIN Hill Nehemiah GREW Solution : Nehemiah Grew

Discussion

1581.	Question :The far point of a myopic person is 80cm in front of the eye. What is the nature and power of the lens required to correct the problem.
Answer» <P> Solution :The PERSON is suffering from an eye defect called myopia. In this defect, the IMAGE is formed in front of the retina. Hence a concave lens is used to CORRECT this defect of vission. OBJECT distance, u - infinity - `oo` Image distance, v=-8cm, Focal length=f According to the lens formula `1/v-1/u = 1/f` `- 1/80 - 1/oo = 1/f` `1/f =- 1/80` `f =- 80 cm = - 0.8 m` We know , power , P = 1/f(in meter) `P= (1)/(-0.8) = - 1.25D` A concave lens of power -1.25D is required by the person to correct his defect .

Discussion

1582.	Question : The far point of a myopic person is 150cm in front of eye, calculate the focal length and the power of lens to enable see distant object clearly.
Answer» SOLUTION :Far point V = 150 CM USING lens FORMULA `= 1/f = 1/v = 1/u` `/f = (-1/150) - (-1/oo) ` ` 1/f = -1/500` `f = -150 , " power " = 100/150 = 2/3 =- 0.66D`

Discussion

1583.	Question : The famous potato famine that occurred in Ire land in 1845 was caused by the infection of
Answer» Alternaria solani Phytophthora infestans Synchytrium endobioticum Helminthosporium ORYZAE ANSWER :B

Discussion

1584.	Question : The eyeball of a mammal consists of
Answer» RETINA and CHOROID SCLEROTIC, choroid and retina sclerotic, choroid, retina and SKIN sclerotic and retina Answer :C

Discussion

1585.	Question : The eyes of …………………………….. are very simple and in the form of a dot.
Answer» ANSWER :PLANARIA

Discussion

1586.	Question : The extra nuclear DNA in a bacterial cell contains genes for:
Answer» sexuality DRUG resistance sexuality and drug resistance mortality Answer :C

Discussion

1587.	Question : The expulsion of completely, developed foetus from the uterus is known as
Answer» ovulation oviposition GESTATION parturition Answer :D

Discussion

1588.	Question : The experimental material that has largely been responsible for making rapid advances in research on photosynthesis is
Answer» SPINACH leaf Chlorella Hydrilla Spirogyra ANSWER :B

Discussion

1589.	Question : The existing mankind, present on the earth has originally descended from ……………………………..
Answer» ANSWER :AFRICA

Discussion

1590.	Question : The excretory unit in the human excretory system is called :
Answer» NEPHRON neuron nephridia kidney Solution :Nephron is the tubular STRUCTURE that represents FUNCTIONAL unit of our KIDNEYS.

Discussion

1591.	Question : The exchange of materials between blood and interstitial fluid occurs only at the
Answer» veins capillaries arteries arterioles ANSWER :B

Discussion

1592.	Question : The exchange of gases in a mammal takes place
Answer» TRACHEA bronchioles bronchi alveoli ANSWER :D

Discussion

1593.	Question : The exact structure of molecule of insulin was first reported by
Answer» SANGER J.E. MURRAY Hargovind KHORANA DE Robertes Answer :A

Discussion

1594.	Question : The estimated coal reserves are said to be enough to last us for another two hundred years. Do you think we need to worry about coal getting depleted in this case ? Why or why not?
Answer» Solution :COAL is used in large amount in thermal power stations for to generate ELECTRICITY. The use of coal generates pollutants as the coal BURNS. Coal is also non-renewable resource, once depleted, it cannot be restored BACK. It will last only for 200 years, but formation of coal has taken millions of years and therefore we should use it with great care.

Discussion

1595.	Question : Theessential partsof a flowerare _____.
Answer» CALYX and Corolla Calyx and ANDROECIUM Corolla and GYNOECIUM Androecium and Gynoecium Solution :Androecium and Gynoecium

Discussion

1596.	Question : The essence of Haeckel's Recapitulation theory is:
Answer» INHERITANCE of ACQUIRED characters alternation of generations ontogeny REPEATS phylogeny prodigality of reproduction Answer :C

Discussion

1597.	Question : The equipment employed for terilising glass ware and culture media is known as
Answer» Incubator Autoclave Oven Dehumidifier ANSWER :B

Discussion

1598.	Question : The enlarged end of penis is called
Answer» Prepuce Glance penis Glanse penis Glans penis Answer :D

Discussion

1599.	Question : The energy sources that can be regenerated are called renewable energy sources.
Answer» ANSWER :1

Discussion

1600.	Question : The energy produced by 1g of carbohydrate is
Answer» 4.8 cal 4.2 kcal 9 joules 9.2 kcal Answer :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : The food chain that starts from plants and goes from smaller to larger animals is

Question : The food coming from stomach is _________ and is made alkaline by _________

Question : The food chain in which microorganisms break down the energy rich compounds synthesised by producers is

Question : The following is aerobic, free living nitrogen fixing soil bacterium

Question : The following groups of organisms represent differenl trophic levels.Which out of these four has the greatest biomass?

Question : The flow of energy in the ecosystem unidirectional.

Question : The flow of energy between various components of the environment has been extensively studied. Give an outline of the findings.

Question : The floral parts are usually pentamerous (5 in number ) in

Question : The flightless birds Rhea, Kiwi & Emu respec tively belong to which countries?

Question : The first successfully cloned mammal that gained world-wide publicity was

Question : The first step in taxonomy is

Question : The first step in genetic engineering as

Question : The first product of pyruvic acid in Mitochondria

Question : The first plants to reappear in a badly burned forest area will most probably be

Question : The first phylum with complete digestive sys tem was

Question :The first organisms were

Question : The first hormone to be isolated was

Question : The first hormone artificially produced culturing bacteria is

Question : The first genetic material was most likely

Question : The first division of zygote is

Question : The first animals to have nervous were probably similar to modern

Question : The fine network of membrane distributed throughout the cytoplasm in a cell is

Question : The filaments of certain algae breaks again and again and each part develops as individual algae. Which type of process is this ?a.Buddingb.Fragmentationc.Binary fissiond.Multiple fission

Question : The figure given alongside shows the human male reproductive organs. Which structures make sperms and seminal fluid ?

Question : The fertilisation cone, which pulls the sperm into the egg, is formed from

Question : The ferns are usually found

Question : The female part of the flower is ...............

Question :The fatty streak, plaque leads to the narrowing of blood vessels lead to ..............

Question : The father of Plant Anatomy is …….

Question :The far point of a myopic person is 80cm in front of the eye. What is the nature and power of the lens required to correct the problem.

Question : The far point of a myopic person is 150cm in front of eye, calculate the focal length and the power of lens to enable see distant object clearly.

Question : The famous potato famine that occurred in Ire land in 1845 was caused by the infection of

Question : The eyeball of a mammal consists of

Question : The eyes of …………………………….. are very simple and in the form of a dot.

Question : The extra nuclear DNA in a bacterial cell contains genes for:

Question : The expulsion of completely, developed foetus from the uterus is known as

Question : The experimental material that has largely been responsible for making rapid advances in research on photosynthesis is

Question : The existing mankind, present on the earth has originally descended from ……………………………..

Question : The excretory unit in the human excretory system is called :

Question : The exchange of materials between blood and interstitial fluid occurs only at the

Question : The exchange of gases in a mammal takes place

Question : The exact structure of molecule of insulin was first reported by

Question : The estimated coal reserves are said to be enough to last us for another two hundred years. Do you think we need to worry about coal getting depleted in this case ? Why or why not?

Question : Theessential partsof a flowerare _____.

Question : The essence of Haeckel's Recapitulation theory is:

Question : The equipment employed for terilising glass ware and culture media is known as

Question : The enlarged end of penis is called

Question : The energy sources that can be regenerated are called renewable energy sources.

Question : The energy produced by 1g of carbohydrate is

Question : The food coming from stomach is _ and is made alkaline by _