Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1051.

Question : To observe filamentous algae under microscope. Apparatus : Microscope, slide, coverslip. Materials : Glycerine, pond water, blotting paper. Procedure : rarr Collect water from a lake or pond that appears dark green and contains filamentous structure. rarr Put one or two filaments on a slide. Put a drop of glycerine on the filaments and cover it with a coverslip. rarr Observe the slide under a microscope. Is spirogyra a prokaryotic or eukaryotic organism ?

Answer»

SOLUTION :EUKARYOTIC ORGANISM.
Discussion
1052.

Question : To observe the different parts of seed. Materials : Seeds of Bengal gram (chana), water, wet cloth. Procedure : rarr Soak a few seeds of Bengal gram (chana) and keep them overnight. rarr Drain the excess water and cover the seeds with a wet cloth and leave them for a day. rarr Make sure that the seeds do not become dry. rarr Cut open the seeds carefully and observe the different parts. What is an embryo of plant ?

Answer»

Solution :An EMBRYO is a FUTURE PLANT which DEVELOPS into seedling.
Discussion
1053.

Question : To observe the asexual reproduction method-Budding in yeast. Apparatus : Test tube, conical flask, cotton plug, cover slip, glass slide, microscope, dropper. Materials : Water, sugar, dry yeast granules. Procedure : rarr Take 100mL of water in conical flask, Add 10g sugar and dissolve it to prepare sugar solution. rarr Take 20mL of sugar solution in glass test tube. Add little amount of dry yeast granules. Shake the mixture and close the test tube tightly with cotton plug. rarr Keep the test tube in warm place for 1 to 2 hours. rarr Take one or two drops of yeast solution on the glass slide with the help of dropper. rarr Now put a cover slip over it and observe under the microscope. Explain meaning of Bud.

Answer»

Solution :Bud is an OUTGROWTH on YEAST cell SURFACE due to cell division.
Discussion
1054.

Question : To observe the asexual reproduction method-Budding in yeast. Apparatus : Test tube, conical flask, cotton plug, cover slip, glass slide, microscope, dropper. Materials : Water, sugar, dry yeast granules. Procedure : rarr Take 100mL of water in conical flask, Add 10g sugar and dissolve it to prepare sugar solution. rarr Take 20mL of sugar solution in glass test tube. Add little amount of dry yeast granules. Shake the mixture and close the test tube tightly with cotton plug. rarr Keep the test tube in warm place for 1 to 2 hours. rarr Take one or two drops of yeast solution on the glass slide with the help of dropper. rarr Now put a cover slip over it and observe under the microscope. What is seen under the microscope?

Answer»

SOLUTION :YEAST CELLS are SEEN under the MICROSCOPE.
Discussion
1055.

Question : To observe filamentous algae under microscope. Apparatus : Microscope, slide, coverslip. Materials : Glycerine, pond water, blotting paper. Procedure : rarr Collect water from a lake or pond that appears dark green and contains filamentous structure. rarr Put one or two filaments on a slide. Put a drop of glycerine on the filaments and cover it with a coverslip. rarr Observe the slide under a microscope. Why is filament of spirogyra green in colour ?

Answer»

SOLUTION :A green COLOUR of the FILAMENT of spirogyra is due to presence of CHLOROPHYLL.
Discussion
1056.

Question : To observe filamentous algae under microscope. Apparatus : Microscope, slide, coverslip. Materials : Glycerine, pond water, blotting paper. Procedure : rarr Collect water from a lake or pond that appears dark green and contains filamentous structure. rarr Put one or two filaments on a slide. Put a drop of glycerine on the filaments and cover it with a coverslip. rarr Observe the slide under a microscope. Can you identify different tissues in the filaments ?

Answer»

SOLUTION :No, FILAMENT of SPIROGYRA is DEVOID of TISSUES.
Discussion
1057.

Question : To observe filamentous algae under microscope. Apparatus : Microscope, slide, coverslip. Materials : Glycerine, pond water, blotting paper. Procedure : rarr Collect water from a lake or pond that appears dark green and contains filamentous structure. rarr Put one or two filaments on a slide. Put a drop of glycerine on the filaments and cover it with a coverslip. rarr Observe the slide under a microscope. State the example of filamentous organism.

Answer»

SOLUTION :FILAMENTOUS ALGAE : SPIROGYRA.
Discussion
1058.

Question : To observe binary fission in Amoeba. Apparatus: Microscope, permanent slide of Amoeba. Procedure : rarr Observe a permanent slide of Amoeba under a microscope. rarr Observe another permanent slide of Amoeba showing binary fission. rarr Compare your observations in both the slides. Which unicellular, eukaryotic organisms reproduce through binary fission ?

Answer»

Solution :Amoeba, Paramoecium, LEISHMANIA, EUGLENA, ETC.
Discussion
1059.

Question : To observe binary fission in Amoeba. Apparatus: Microscope, permanent slide of Amoeba. Procedure : rarr Observe a permanent slide of Amoeba under a microscope. rarr Observe another permanent slide of Amoeba showing binary fission. rarr Compare your observations in both the slides. Can you give the sequence of binary fission in Amoeba ?

Answer»

Solution :The sequence of BINARY FISSION in Amoeba : `"division Nuclear"rarr"CYTOPLASMIC division"rarr"CELL divides into two daughter CELLS"`.
Discussion
1060.

Question : To observe binary fission in Amoeba. Apparatus: Microscope, permanent slide of Amoeba. Procedure : rarr Observe a permanent slide of Amoeba under a microscope. rarr Observe another permanent slide of Amoeba showing binary fission. rarr Compare your observations in both the slides. Is Amoeba prokaryotic or eukaryotic organism ?

Answer»

SOLUTION :EUKARYOTIC.
Discussion
1061.

Question : To increase the sugar production in sugarcanes they are sprayed with

Answer»

AUXIN

SOLUTION :ETHYLENE
Discussion
1062.

Question : To find out the names of organisations involved in spreading awareness about the conservation of natural resources. NGO (Non Government Organisations) such us SEACOLOGY and Mera Desh Foundation spread awareness about the environment and promote activities that lead to conservation of natural resources. Some other organisations that work for the conservation of the environment. CSE - The Centre for Science and Environment, TER- The Energy and Resources Institute, WTI - Wildlife Trust of India. Which organisation(s) is/are active to spread awareness about conservation of our environment and natural resources in your village /town/city?

Answer»

SOLUTION :Natural resource management,
CORE ENVIRONMENTAL NGOs,
Centre for ENVIRONMENT and Social CONCERNS.
Discussion
1063.

Question : To find out the names of organisations involved in spreading awareness about the conservation of natural resources. NGO (Non Government Organisations) such us SEACOLOGY and Mera Desh Foundation spread awareness about the environment and promote activities that lead to conservation of natural resources. Some other organisations that work for the conservation of the environment. CSE - The Centre for Science and Environment, TER- The Energy and Resources Institute, WTI - Wildlife Trust of India. How you can contribute towards the conservation of our environment and natural resources.

Answer»

Solution :We can contribute TOWARDS the CONSERVATION of our environment and natural resources by following:
(1) Limit the use personal vehicle, instead use public transport.
(2) Minimise the wooden furniture at our home.
(3) Do not WASTE paper and other natural resources.
(4) Do not pollute water reservoirs.
(5) Do not use insecticides / PESTICIDES.
(6) Do not cut trees, do not clear forests.
Discussion
1064.

Question : To find out the international norms to regulate the emission of carbon dioxide. implies Carbon dioxide (CO_2) is the primary greenhouse gas emitted through human activity. impliesThe international norms to regulate the emission CO_2 are based on Kyoto Protocol. impliesThis protocol was negotiated in December, 1997 at the city of Kyoto, Japan and came into force on February 16th, 2005. impliesAs of December 2006, a total of 169 countries have signed the agreement. impliesUnder this protocol, industrialised countries must reduce their collective emissions of CO_2 and other greenhouse gases to an average of 3 5% against 1990 levels. What is global warming ?

Answer»

Solution :Global WARMING is the INCREASE in AVERAGE temperature of the earth.s environment due to increase in amount of GREENHOUSE GASES.
Discussion
1065.

Question : To find out the international norms to regulate the emission of carbon dioxide. implies Carbon dioxide (CO_2) is the primary greenhouse gas emitted through human activity. impliesThe international norms to regulate the emission CO_2 are based on Kyoto Protocol. impliesThis protocol was negotiated in December, 1997 at the city of Kyoto, Japan and came into force on February 16th, 2005. impliesAs of December 2006, a total of 169 countries have signed the agreement. impliesUnder this protocol, industrialised countries must reduce their collective emissions of CO_2 and other greenhouse gases to an average of 3 5% against 1990 levels. Why is it necessary to regulate the emission of carbon dioxide ?

Answer»

Solution :Carbon DIOXIDE is a MAJOR GREENHOUSE gas that causes global warming. Which RESULTS into climate CHANGE. So, it is necessary to regulate the emission of carbon dioxide.
Discussion
1066.

Question : To find out the international norms to regulate the emission of carbon dioxide. implies Carbon dioxide (CO_2) is the primary greenhouse gas emitted through human activity. impliesThe international norms to regulate the emission CO_2 are based on Kyoto Protocol. impliesThis protocol was negotiated in December, 1997 at the city of Kyoto, Japan and came into force on February 16th, 2005. impliesAs of December 2006, a total of 169 countries have signed the agreement. impliesUnder this protocol, industrialised countries must reduce their collective emissions of CO_2 and other greenhouse gases to an average of 3 5% against 1990 levels. Which is the simplest way to regulate the CO_2 level in environment ?

Answer»

Solution :Plantation of trees and conservation of GREEN COVER on the EARTH is the simplest way to REGULATE the `CO_2` level in environment.
Discussion
1067.

Question : To demonstrate, "black surface absorbs more heat as compared to a white surface". Apparatus - Materials : Conical flasks, water, thermometer Procedure : rarr Take two conical flasks and paint one white and the other black. rarr Fill water in the both flask. rarr Place the conical flasks in direct sunlight for half an hour to one hour. rarr Measure the temperature of the water in both conical flask with a thermometer. Which property is used in solar cooker and solar water heater ?

Answer»

SOLUTION :A black SURFACE ABSORBS more HEAT as COMPARED to a white or a reflecting surface under identical conditions.
Discussion
1068.

Question : To demonstrate, "black surface absorbs more heat as compared to a white surface". Apparatus - Materials : Conical flasks, water, thermometer Procedure : rarr Take two conical flasks and paint one white and the other black. rarr Fill water in the both flask. rarr Place the conical flasks in direct sunlight for half an hour to one hour. rarr Measure the temperature of the water in both conical flask with a thermometer. If you touch the conical flasks, which one is hotter ?

Answer»

SOLUTION :Conical FLASK painted BLACK is HOTTER.
Discussion
1069.

Question : To demonstrate, "black surface absorbs more heat as compared to a white surface". Apparatus - Materials : Conical flasks, water, thermometer Procedure : rarr Take two conical flasks and paint one white and the other black. rarr Fill water in the both flask. rarr Place the conical flasks in direct sunlight for half an hour to one hour. rarr Measure the temperature of the water in both conical flask with a thermometer. In which ways this finding can be used in our daily life ?

Answer»

Solution :Wearing black coloured CLOTHES in winter and WHITE colour clothes in summer.
White paint on the outer wall as well as white COATING on terrace helps to maintain `2-3^(@)C` low temperature inside the house during summer.
Discussion
1070.

Question : To check the pH of tap water and compare it with pH of the water in the local water body. Apparatus : Test tubes or beaker Materials : Universal pH indicator / litmus paper Procedure : impliesTake water sample from tap of your home in a test tube. impliesAdd few drops of the universal indicator into the test tube containing tap water. implies Observe the water sample in the test tube for colour change. impliesTest pH using a litmus paper, in the water sample placed in a beaker. impliesDip the litmus paper into the water in the local water body. impliesObserve colour changes of the litmus paper. Observation : implies Test tube containing tap water, turns yellow colour with addition of pH indicator. implies Litmus paper does not show colour change with tap water. impliesWater sample collected from pond shows red colour with pH indicator. Litmus paper turns red as it is dipped in water of local water body. Conclusion : The uncontaminated tap water is neutral while water of local water body is acidic. Can you say whether the water is polluted or not on the basis of your observations?

Answer»

Solution :YES, TAP WATER is clean and non-POLLUTED. Water of water body is polluted.
Discussion
1071.

Question : To check the pH of tap water and compare it with pH of the water in the local water body. Apparatus : Test tubes or beaker Materials : Universal pH indicator / litmus paper Procedure : impliesTake water sample from tap of your home in a test tube. impliesAdd few drops of the universal indicator into the test tube containing tap water. implies Observe the water sample in the test tube for colour change. impliesTest pH using a litmus paper, in the water sample placed in a beaker. impliesDip the litmus paper into the water in the local water body. impliesObserve colour changes of the litmus paper. Observation : implies Test tube containing tap water, turns yellow colour with addition of pH indicator. implies Litmus paper does not show colour change with tap water. impliesWater sample collected from pond shows red colour with pH indicator. Litmus paper turns red as it is dipped in water of local water body. Conclusion : The uncontaminated tap water is neutral while water of local water body is acidic. Can aquatic life survive in acidic water of water body?

Answer»

SOLUTION :No, AQUATIC life cannot survive in acidic WATER.
Discussion
1072.

Question : To check the pH of tap water and compare it with pH of the water in the local water body. Apparatus : Test tubes or beaker Materials : Universal pH indicator / litmus paper Procedure : impliesTake water sample from tap of your home in a test tube. impliesAdd few drops of the universal indicator into the test tube containing tap water. implies Observe the water sample in the test tube for colour change. impliesTest pH using a litmus paper, in the water sample placed in a beaker. impliesDip the litmus paper into the water in the local water body. impliesObserve colour changes of the litmus paper. Observation : implies Test tube containing tap water, turns yellow colour with addition of pH indicator. implies Litmus paper does not show colour change with tap water. impliesWater sample collected from pond shows red colour with pH indicator. Litmus paper turns red as it is dipped in water of local water body. Conclusion : The uncontaminated tap water is neutral while water of local water body is acidic. What is the cause for acidic water in water body?

Answer»

Solution :POLLUTION is the MAIN CAUSE for ACIDIC water in water body.
Discussion
1073.

Question : Tissue culture can be done for animal cells also.

Answer»

SOLUTION :FALSE - Only for PLANT CELLS.
Discussion
1074.

Question : Tiger, Rabbit, Wolf, Grass.

Answer»

SOLUTION :GRASS `to`RABBIT `to`WOLF `to`TIGER
Discussion
1075.

Question : Tidal volume of air in a normal healthy man during inspiration is about

Answer»

`300-400 ML` 
`500-700 ml`
`900-1000 ml` 
`100-250 ml`

ANSWER :B
Discussion
1076.

Question : Tidal energy is ___________ type of energy.

Answer»

SOLUTION :Non-conventional or RENEWABLE
Discussion
1077.

Question : Thylakoids are found commonly in plastids of

Answer»

BLUE GREEN algae
bacteria
higher plants
all of the above

Solution :N/A
Discussion
1078.

Question : Through the pores present in the blood capillaries, some amount of plasma, proteins and blood cells escape into intercellular spaces to form _________.

Answer»

SOLUTION :LYMPH, tissuefluid
Discussion
1079.

Question : Thromoboplastin required in blood clotting is secreted by

Answer»

monocytes
lymphocytes
erythrocytes
platelets 

ANSWER :D
Discussion
1080.

Question : Thrombin occurs in vertebrates in

Answer»

the blood and GIVES it RED colour
the blood and is IMPORTANT for clotting
the liver and is important for bile SECRE tion
the STOMACH and digests proteins 

Answer :B
Discussion
1081.

Question : Thread like structures constituting the body mycelium of the fungus are known as

Answer»

thallus
paraphyses
hyphae
rhizines

Answer :C
Discussion
1082.

Question : Though the volume of blood kidney filters is 180 L a day then, why is the volume ofurine only one to two litres ?

Answer»

Solution :Though the VOLUME of BLOOD filtered by the KIDNEY is 180 L the volume of urine is just 1-2 LITRES because the remaining nutrientsand waterare reabsorbed in the kidney tubules.
Discussion
1083.

Question : This is the first step of both Aerobic. and Anaerobic respiration.

Answer»

Electron transport chain
Respiratory QUOTIENT
Glycolysis
KREB's Cycle

SOLUTION :Glycolysis
Discussion
1084.

Question : Think why disasters like Uttarakhand happened ?

Answer»

Solution :1. Uttarakhand and Himachal Pradesh are two hill states that were stuck by extreme rains in 2013.
2. Heavy rainfall has wrecked havoc on the region because of fragile nature of Himalayan range and poor soil stability in its deep steps. But it is the man made factor that has compounded the SCALE of the disaster.
3. Unabated expansion of hydro power project and construction of roads to accommodate ever-increasing tourism especially religious tourism are also major causes for the unprecendented scale of devastation.
4. The valleys of Yamuna, Ganga and Alakananda attract heavy traffic of tourists. For them, government has to construct new roads and widen the existing ones.
5. A new mountain range like Himalayas will remain study if not tampered much. But the huge expansion of trade and transport is bringing the mountains in Uttarakhand down.
6. Study should be conducted to assess the carrying capacity of the Himalayas and DEVELOPMENT should be planned accordingly.
Threat from dams : The Ganga in upper reaches has been engineers' play ground. The centralelectrical authority and Uttarakhand power department have estimated the rivers hydrolytic POTTENTIAL at some 9000 muc and planned 70 odd projects on its tributaries. In building these, key tributaries have been modified through diversions through tunnels or reservoirs.
Discussion
1085.

Question : Thigmotropism is best exhibited by

Answer»

TENDRILS
ROOT APEX
STEM apex
LEAF apex

Answer :A
Discussion
1086.

Question : The________units form the backbone of the DNA.

Answer»

5 CARBON SUGAR
Phosphate
Nitrogenous BASES
Sugar phosphate

Answer :C
Discussion
1087.

Question : These are absent in the modern birds

Answer»

scales
feathers
teeth
none of the above 

ANSWER :C
Discussion
1088.

Question : Thermostat is an instrument by which one can regulate the temperature of an oven, a heater or a refrigerator. Functionally a similar mechanism is located in the mammalian brain in the region of the

Answer»

cerebrum
hypothalamus
cerebellum
medulla oblongata

Answer :B
Discussion
1089.

Question : Thermal pollution is more prevalent near

Answer»

HOT WATER springs
coal based power PLANTS
temperate zones
tropical zones

ANSWER :B
Discussion
1090.

Question : There is no change in the colour of red litmus and blue lit mus paper when introduced into an aqucous solution of sodium chloride. A fter passing direct current through the same solution, red litmus ehanges to blue colour. Which product is responsible for this change? Mention any two uses of this produet.

Answer»

Solution :`Sodium HYDROXIDE // NaOli.`
(i) Degreasing netals
(II) soaps and DETERGENTS
(III) Paper NMAKING
(iv) Artificial fibres.
Discussion
1091.

Question : There are_____pairs of cranial nerves and ______ pairs of spinal nerves.

Answer»

12, 31
31, 12
12, 13
12, 21

Answer :A
Discussion
1092.

Question : There are two metallic wires of the same thickness made from iron and silver. If the length of iron wire is 12cm, what should be the length of silver wire which is equal to the resistance of iron wire? Data : Resistivity of iron= 10 xx 10^(-8) Omegam Resistivity of silver= 16 xx 10^(-8) Omega m

Answer»

SOLUTION :`I_(i) = 12 CM `
`I_(s) =? `
` S_(i) = 10 XX 10^(-8) Omega m `
` S_(s) = 16 xx 10^(-8) Omega m`
` (S_i)/(S_(s) ) = (I_s)/(I_i) = (10 xx 10^(-8) )/(16 xx 10^(-8) ) = (I_((s)) )/(12) = 120/16 = I_((s)) `
`I_((s)) = 7.5 cm`
Discussion
1093.

Question : There are two different types of organs, homologous and analogous. Differentiate between them by giving three points.

Answer»

SOLUTION :
Discussion
1094.

Question : There are more herbivores than carnivores in a food chain because... I. carnivores have bigger appetites. II. a large number of herbivores are needed to support a small number of carnivores. Ill. there are more plants for herbivores to eat. IV. much energy is lost in the transfer of energy from herbivores to carnivores.

Answer»

I and III
II and IV
I and II
All of given

Solution :II and IV
Discussion
1095.

Question : There are how many pairs of spinal nerves in a human?

Answer»

8
12
25
31

Answer :D
Discussion
1096.

Question : There are how many pairs of cranial nerves in a human?

Answer»

8
12
25
31

Answer :B
Discussion
1097.

Question : There are four tiny organisms A,B, C and D. The organism A is a parasitic protozoan which causes a disease known as kala-azar. Theorganism B is microscopia single-called animl which causes malaria diseasein human beings. The organism Cis a unicellular animal which can change its body shape accroding to need, it has nofixed shapt. The organism D is also a unicellular animal which i slopper-shaped having a large number of tiny hair all around its body. (a) Name the organisms A, B, C and D (b) Name one characteristic body feature of organism A (c) Name the insect which carreis organism B andtransmits if from on person to another (d) What name is given to the asexual method of reproduction of (i) organism A, and (ii) organism B? (e) Where do organism C and D live?

Answer»


SOLUTION :N//A
Discussion
1098.

Question : There are five animals A, B, C, D and E. The animal A uses its modified forelimbs for flying. The animal B uses its forelimbs for running whereas the animal C uses its forelimbs for grasping. The animal D can live on land as well as in water and uses its forelimbs to prop up the front end of its bodywhen at rest. The animal E which respires by using spiracles and tracheae uses wings for flying but its wings are analogous to the modified forelimbs of animal A. (a) What could the animals A, B, C, D and E be ? (b) Why are the forelimbs of animals A, B, C and Dcalled homologous organs ? (c) What does the existence of homologous organs in animals A, B, C and D tell us about their ancestors ? (d) Why are the modified forelimbs of animal A and the wings of animal E called analogous organs ? (e) State whether animals A and E have a common ancestor or not .

Answer»


Answer :(a) A : Bird ; B : Lizard ; C : HUMAN ; D : Frog ; E : Insect(b) Because they have the same BASIC design but perform different functions (c) They are DERIVED FROMTHE same ancestor(d) Because they have different basic design but perform similar functions (e) No
Discussion
1099.

Question : There are 64 codons in genetic code dictionary because

Answer»

there are 64 types of rRNA's found in the cell
there are 44 meaningless and 20 CODONS for amino acids
genetic CODE is triplet
there are 64 amino acids to be coded

Answer :C
Discussion
1100.

Question : Theory of inheritance of acquired characters was put forth by

Answer»

DeVries
Lamarck
Weismann
Galton

Answer :B
Discussion