

InterviewSolution
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.
5651. |
.(a) Name the main organs of the human digestive system. Also name the asso(b)How docarbohydrates, fats and proteins get digested in human beings ? |
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5652. |
Water availability per person in India is declining? |
Answer» This is a true statement. The population of India has been growing but availability of water has been declining. Hence, water availability per person is declining. |
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5653. |
1.Why do you think we must brush our teeth using a tooth paste after eating oranges?1.1.T:11:11.3 |
Answer» because the pulpes are struck in teeths yes I am agree by this question I brush our teeth with toothpaste because in our mouth acid is present and when we eat any sour /Acidic substance like orange and acid content in our mouth increases and this may lead to tooth cavity, toothpaste is a base which helps to maintain this acid content in our mouth. |
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5654. |
. Tick () the correct options.1. There are tiny taste buds on oura. mouthb. tonguec. beakd. teeth65 Thu n |
Answer» The answer is tongue. |
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5655. |
८ Heeo wm/wg o{%‘iw G/L’ 'fl,' W-R (r' |
Answer» There are23 districts in west bengal |
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5656. |
write special feature of root and leaves of mustard plants |
Answer» 1.Heart-shaped cotyledons and leaf stalks are hairless. 2.First true leaves are covered with hairs on both the upper and lower leaf surfaces. Hairs on leaves are less dense than on yellow mustard leaves. 3.Leaves are pale green with hairs on the first leaves and leaf margins. 4.The lower leaves will be deeply lobed, while the upper leaves will be narrower and not lobed. 5. The leaf will terminate higher up on the petiole and will not clasp the stem. 6. Pale yellow flowers. Hairless and smooth .7.Smooth long, conical beaked pods. The pods are usually positioned 45º to the stem. 8. Seeds are reddish brown to dark brown in colour and are 2mm or less in diameter. They have spherical or oval shape. |
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5657. |
PartUsesAlkaloidQuinine Cinchona officinalis BarkNicotine Nicotiana tobacum LeavesReserpineRauwolfia serpentine Root, barkCaffeine Coffea arabicaPlantAnti malarial drugInsecticideTKMedicine for snake biteSeedCentral nervous systemstimulantNimbin Azadirachta indica Seeds, Barks, leaves Anti septica) What is the use of reserpine ?b) What is the scientific name of tobacco ?c) Which part of the neem plant gives Nimbin ?d) Which alkaloid is used as anti malarial drug ? |
Answer» a)reserpine is used in order to save as an organism from snake's poison.b)scientific name for tobacco is Nicotiana Tobacumc)seeds,barks and leaves of neem plant gives Nimbin which is an anti-septic.d)Quinine is used as an anti-malarial drug. |
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5658. |
0.4 List two forms of energy in which solar energy manifests itself in oceans |
Answer» The two forms of energy are: 1-Ocean thermal energy (OTE) which the manifestation of heat energy2-Ocean waves: The wind blowing due to sun's energy over the ocean surface sweep its surface and produce waves The two forms of energy are: -Ocean thermal energy (OTE) which the manifestation of heat energy.-Ocean waves: The wind blowing due to sun's energy over the ocean surface sweep its surface and produce waves |
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5659. |
uuituls IH Tactors ofAnawer the following :40. 3) Why is the use of lodine salt advisable ?3x4-12li) Write any two differences botwen Central Nervous system andPeripheral Nervous system.ORi) Adrenaline is an emergency hormone. Why ?i) Write any two differences between endocrine and Nervous system.41 i) Mention any two |
Answer» i. The usage of iodised salt is advised as the ingestion of iodine prevents the deficiency of iodine in our bodies. Iodine is essential for the development of our brain, even then having less amount of iodised salt, as well as more amount of iodised salt, can be dangerous for our health. So it has to be made sure that we intake the right amount of iodine in the form of iodised salt in our meals. ii. The central nervous systemorthe CNScontainsthebrain andthespinal cord. Everything else butthe CNSit is known asthe peripheral nervous system. The peripheral nervous systemor PNS containsthe nerves, which leavethebrain andthespinal cord and travel to certain areasof thebody. i. Adrenalineis ahormonesecreted by adrenal medulla during stress. This is called asemergency hormonebecause it initiates quick reation which makes the individual to think and respond quickly to the stress. The hormoneincreases metabolic rate. there occurs dialation of blood vessels going to heart and the brain. ii. Thenervousandendocrine systemsboth work to bring about this adaptation, but their response patterns aredifferent. Thenervous systemand theendocrine systemuse chemical messengers to signal cells, but the speed at which these messages are transmitted and the length of their effects differs. thank you |
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5660. |
How to determine whether an organism is homozygous or heterozygous by its phenotype? |
Answer» by performinga test cross (Cross the unknown individual with a homozygous recessive). A test cross provides the greatest chance of different offspring (if the individual in question is heterozygous then the outcome with be 50:50 (1:1 ratio) of dominant to recessive phenotypes. how to get the homozygous at first for this experiment? |
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5661. |
In figure, if OA = 5cm, AB = 8 cm and OD丄AB then CD is equal to1) 2 cm2) 3 cm3) 4 cm4) 5 cm |
Answer» If AB is 8 cm , then AC = 8/2 = 4cm so, OC = √(OA)²-(AC)² = √5²-4² = 3. so , CD = 5-3 = 2cm |
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5662. |
1The potential energy of a particle of mass m at a distance r from a fixed point O is given byV (r) = ke'#2, where k is a positive constant of appropriate dimensions. This particle is moving in acircular orbit of radius R about the point O, If v is the speed of the particle and L is the magnitudeof its angular momentum about O, which of the following statements is (are) true ?कि हल = J_mk(A) "पी (B) v-m—l! (©) L-JmkR? (D) L= Z—R’ |
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5663. |
Your friend has ruptured his muscle after slipping on the road. What four stepsof first aid would you adopt? |
Answer» Restthe ruptured muscle and applyicefor the first few days after the injury.Anti-inflammatory medicines or acetaminophen (Tylenol) also help reduce pain andswelling. As the pain decreases, you can use heat on the muscle. Stretching and light exercises to bring blood to the injured area can also be useful. |
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5664. |
What happens ifour tympanum ruptured? |
Answer» It can result in the hearing loss |
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5665. |
Qecis How ale fatswhere otaes this |
Answer» Fatsaredigested in thesmall intestine. The secretion of liver, called bile, breaks down the large globules offatinto smaller globules. This is called emulsification offats. The bile also makes the medium alkaline sothat thepancreatic enzyme containing lipase furtherdigest fatsto form fatty acids. |
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5666. |
Blood is filtered in Bowman's capsule of nephron. For the filtration of bloodpressure is needed. How this pressure happens to blood ? |
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5667. |
1. What are enzymes? Name any one enzyme of our digestive system and write its function. |
Answer» Enzymes are protein molecules that act as a biological catalysts in our digestive system. In our digestive system, Different enzymes are there to digest the different components of food. for example, => Amylase : It is a carbohyadrate splitting enzyme present in saliva in mouth as well as small intestine. It hydrolysed the starch into a Disaccharides. => Lipase : It helps for the digestion of lipids . It breakdown the fat into diglycerides and monoglycerides. pepsin : The group of these enzymes include trypsin, chymotrypsin and carboxypeptidase which breakdown the Proteins, peptons and proteoses into Dipeptides => Nucleases : These enzymes acts on nucleic acids and converted it into nucleotides and nucleosides. |
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5668. |
34. Which vessels drain filtered blood from thekidneys? |
Answer» The renal veins are veins that drain the kidney. They connect the kidney to the inferior vena cava. They carry the blood filtered by the kidney. |
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5669. |
What vessels carry blood to the kidneys? Is thisblood arterial or venous? |
Answer» Blood comes to the kidneys from the abdominal aorta and inferior vena cava, the large arteries and veins that are part of the ascending aorta. Oxygenated blood is brought to the kidneys from a small branch called the renal artery. |
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5670. |
Tick (the correct option.1. Transpiration occurs througha. phloemb. xylemc. blood vesselsd. stomata |
Answer» The answer is Option B. |
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5671. |
Classify the following terms into cells, tissues and organs and tabulate: RBC, WBC, nerve cell, blood,muscle, blood vessels, brain, heart, hand, Bone..leg os structural and funetional |
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5672. |
Describe Ghost |
Answer» In folklore, a ghost is the soul or spirit of a dead person or animal that can appear ..... Pliny describes the haunting of a house in Athens, which was bought by the Stoic philosopher |
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5673. |
write the function of 1) Blood vessels 2) Blood platelets |
Answer» 1)Blood Vessels:-The blood vessels are part of thecirculatory systemand function totransport blood throughout thebody. The most important types, arteries and veins, carry blood away from or towards the heart, respectively. 2)Blood Platelets:-The principal function of platelets is to prevent bleeding. |
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5674. |
The pancreatic cells that secrete the digestienzymes show predominance ofa) mitochondriab) Golgi bodies |
Answer» Golgi apparatusare found along withendoplasmic reticulummore in number as in the pancreatic cells secreting digestive enzymes as Golgi are responsible for the refinement and packing ofproteins. Please hit the like button if this helped you out |
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5675. |
Which statement is wrong about blood clotting?a) Thromboplastin converts prothrombin to thrombinc) Platelets secrete prothrombinb) Fibrin is an insoluble proteind) Thromboplastin is a lipoprotein |
Answer» d is the correct answer OPTION DBlood clotscan also form when yourblooddoesn't flow properly. If it pools in yourbloodvessels or heart, the platelets are more likely to stick together. Atrial fibrillation and deep vein thrombosis (DVT) are two conditions where slowly movingbloodcan causeclottingproblems. |
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5676. |
J-159. Describe the Fluid Mosaic Model of cell membrane with diagram 5 |
Answer» Thefluid mosaic model describesthe structure of theplasma membraneas amosaicof components —including phospholipids, cholesterol, proteins, and carbohydrates—that gives themembraneafluidcharacter.Plasma membranesrange from 5 to 10 nm in thickness. ... For example, myelin contains 18% protein and 76% lipid. The fluid mosaic model of cell membranes- Substances that make up the cell membrane are not locked in place - arranged in a 'mosaic' but are free to move around within the mosa Thefluid mosaic modelexplains various observations regarding the structure of functionalcell membranes. According to thisbiological model, there is alipid bilayer(two molecules thick layer) in whichproteinmoleculesare embedded. The lipid bilayer givesfluidityandelasticityto themembrane. Small amounts ofcarbohydratesare also found in the cell membrane. The biological model, which was devised bySJ SingerandG. L. Nicolsonin 1972, describes the cell membrane as atwo-dimensional liquidthat restricts thelateral diffusionof membrane components. Such domains are defined by the existence of regions within the membrane with special lipid and protein cocoon that promote the formation oflipid raftsor protein andglycoproteincomplexes. Another way to define membrane domains is the association of the lipid membrane with thecytoskeletonfilaments and theextracellular matrixthrough membrane proteins. The current model describes important features relevant to many cellular processes, including:cell-cell signaling,apoptosis,cell division, membrane budding, and cell fusion. The fluid mosaic model is the most acceptable model of the plasma membrane. Its main function is to give shape to the cell. Thefluid mosaic modelexplains various observations regarding the structure of functionalcell membranes. According to thisbiological model, there is alipid bilayer(two molecules thick layer consisting primarily of amphipathic phospholipids) in whichproteinmoleculesare embedded. The lipid bilayer givesfluidityandelasticityto themembrane. Small amounts ofcarbohydratesare also found in the cell membrane. The biological model, which was devised bySJ SingerandG. L. Nicolsonin 1972, describes the cell membrane as atwo-dimensional liquidthat restricts thelateral diffusionof membrane components. Such domains are defined by the existence of regions within the membrane with special lipid and protein cocoon that promote the formation oflipid raftsor protein andglycoproteincomplexes. Another way to define membrane domains is the association of the lipid membrane with thecytoskeletonfilaments and theextracellular matrixthrough membrane proteins.[1]The current model describes important features relevant to many cellular processes, including:cell-cell signaling,apoptosis,cell division, membrane budding, and cell fusion. The fluid mosaic model is the most acceptable model of the plasma membrane. Its main function is to separate the contents of the cell from the outside. |
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5677. |
Which cells of 'Crypts of Lieberkuhn' secreteantibacterial lysozyme?(a) Paneth cells(c) Kupffer cells (d) Argentaffin cells(b) Zymogen cells |
Answer» Paneth cells is the answer Because paneth cells are present in the mucosa between the leases of villi of small intestine (Crypts of Lieberkuhn).The function of these cells is to secrete ani- bacterial lysozyme |
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5678. |
5. Meiosis results ina. Four haploid cellsb. Two diploid cellsc. Four diploid cellsd. Two haploid cells |
Answer» roje haploid cells are formed four haploid cell 😄😄😄😆😆 c ...four haploid cell 4 haploid chromosome it results into four haploid cells a. four haploid cells |
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5679. |
for developing a hierarchy in classification?Explain the basis for grouping organisms into five kingdoms. |
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5680. |
.1.How do Menderiments show that traits may be dominant or recessive?CBSE 2017ndividuals in a |
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5681. |
Prove that a line drawn through the mid-point of oneside bisects the third side (Using basic proportionality theorem4.side of a triangle parallel to anothe |
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5682. |
uestions1. Name the tissue responsible formovement in our body2. What does a neuron look like?3 Glve three features of cardiac4. What are the functions ofareolar tissue? |
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5683. |
what is the structural formula of morphine |
Answer» C17H19NO3this is the structural formula of morphine |
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5684. |
Internal fertilisation occurs(i) in female body.(ii) outside female body.(ii) in male body.(iv) outside male body. |
Answer» Fertilization takes place inside the female body |
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5685. |
DNA is copied during a process calleda. replication.b. translation.c. transcription.d. transformation.7. |
Answer» Transcription.Transcriptionis the process by which DNA is copied (transcribed) to mRNA, which carries the information needed for protein synthesis.Transcriptiontakes place in two broad steps. First, pre-messenger RNA is formed, with the involvement of RNA polymerase enzymes. hit like if you find it useful |
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5686. |
4. What are biodegradable and non-biodegradable substances5. List two advantages associated with water harvesting at the community level. |
Answer» 5 4.The term ‘Biodegradable’ is used for those things that can be easily decomposed by natural agents like water, oxygen, ultraviolet rays of the sun, acid rains, micro-organisms, etc. One can notice that when a dead leaf or a banana peel is thrown outside, it is acted upon by several micro-organisms like bacteria, fungi or small insects in a time period. Those materials which cannot be broken down or decomposed into the soil by natural agents are labeled as non-biodegradable. These substances consist of plastic materials, metal scraps, aluminum cans and bottles, hazardous chemicals etc. These things are practically immune to the natural processes and thus cannot be fed upon or broken down even after thousands of years. Therefore, these waste rather than returning back, contribute to solid waste which is very hazardous for the environment. |
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S)13. (a) Differentiate between biodegradable and non-biodegradable substances. |
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5688. |
Why are some substances biodegradable and some non-biodegradable? |
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5689. |
2429. i) What are trophic levels?ii) Write one advantage of biodegradable substances in environment0. Can you suggest some changes in your school which would makeit environment friendly? (Any four) |
Answer» 29.i)Each level of the food chain is called trophic level. ii). Biodegradable substances can be decomposed easily by the act of microorganisms on them. 30. Parents and studentscanalso contribute to making theirschools greenerandcan takeeasy-to-implement steps such as the following: Encourage parents and kids to use public transportation or to walk or bike toschoolLike if you find it useful |
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5690. |
Differentiate between biodegradable and non- biodegradablesubstances with examples. |
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5691. |
13. (a) Differentiate between biodegradable and non-biodegradable substances. |
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5692. |
7)Why is frog consider as an urecotelic organism?Who first explained that the new cells are produced from pre-existing cells8) |
Answer» 7)Ammonotelic are the organisms which excrete nitrogenous wastes in the form of ammonia while ureotelicanimals excrete nitrogenous wastes in the form ofurea. Ammonia is more toxic than urea and needs lots of water to excrete from the body. Tadpole lives in water. Hence, it can rapidly excrete ammonia due to availability of lots of water. Adult frog lives mainly on land but lives in water also. Hence, they excrete urea which is less toxic than ammonia and release it in the form of concentrated urine with less need of water. 8)Cell theory, first developed in 1839 byMatthias Jakob SchleidenandTheodor Schwann, states that all organisms are composed of one or more cells, that cells are the fundamental unit of structure and function in all living organisms, and that all cells come from pre-existing cells |
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Tissue that stores fat in our body. |
Answer» In humans,adipose tissueis located beneath theskin(subcutaneousfat), around internalorgans(visceralfat), inbone marrow(yellow bone marrow),intermuscular(Muscularsystem) and in thebreast tissue.Adipose tissueis found in specific locations, which are referred to asadipose depots. HEYA, your answer is here- Adipose Tissue THNX.. the tissue that stores fat in our body is adipose tissue Adipose tissue is stored fats |
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5694. |
10. How important is the presence of air bladder in Pisces? |
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5695. |
5. Draw a diagram showing Human Respiratory System. Label the followingparts(a) Alveolus(c) Bronchus(b) Trachea(d) LungsScience Class -X84 |
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5696. |
state the function of reneal artery, kidney,ureter and urinary bladder? |
Answer» The ureters are narrow, hollow,musculartubes, approximately nine inches long, that connect thekidneysto thebladder. Eachkidneyhas its own ureter through which urine passes. Urine does not flow in a slow, steady stream along the length of the ureters into thebladder. Arteries are numerous in your body. They are blood vessels that are responsible for (with a couple of exceptions) carryingoxygenated blood through the body. Your renal artery, then, is a blood vessel that carriesoxygenatedblood to your kidneys. Theurinary bladderis a muscular sac in the pelvis, just above and behind the pubic bone. When empty, thebladderis about the size and shape of a pear.Urineis made in the kidneys and travels down two tubes called ureters to thebladder. Thebladderstoresurine, allowing urination to be infrequent and controlled. |
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5697. |
Due to availability of less water, how does the plant cope up with lack of water in desert conditions? |
Answer» Desert plants or xerophytic plants are adapted to desert conditions as they have modified leaves and modified stems. Their leaves are modified into spines, which reduces transpiration to almost nil. The stem is modified into succulent stems, which appear as broad leaf. These modified stems have stomata but they remain closed during day time to reduce transpiration. At night, these stomata opens and takes CO2 in. Other things required for photosynthesis like H2O absorbed through out day and night and chlorophyll is already present. Since they take CO2 at night, half of photosynthesis process takes place at night thus forming an intermediate sugar product which are stored in chloroplast and next day, in presence of sunlight, that intermediate product changes to starch, thus completing the photosynthesis (CAM pathway). |
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5698. |
Nomadic herding |
Answer» Nomadic herdingis an ecological or near ecological system of agriculture. It is carried on mainly to produce food for the family and to fulfill the needs of clothing, shelter and recreation. It is the simplest form ofpastoralism. |
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5699. |
Section-C12) Write economic importance of organisms which is symbiotic association offungal & algal components. |
Answer» symbiotic association of fungal and algal components leads to Lichen.And lichens is a best indicator of SO2 pollution. |
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5700. |
3. Give the economic importance of lichens. |
Answer» The lichens are useful to the nature as well as to the human life. Some of the economic importances of lichens are: They areregarded as the pioneerswho have inhabited the rocky habitat. The organic acids produced by them disintegrate rocks. The first lichen species is theLichen condelarins. They areregarded as the soil formerssince it breaks down the hard rocks into soil.Mossesare the successors of thecrustaceous rocks. It is used asfood by the higher animals. The Cladonia rangiferinais used as the rein deer moss. It contains Lichenin which is a carbohydrate which is similar to the starch. It is also used by thesmall insectslike mites, caterpillar, snails etcas source of food. Some of the species of lichens areAspicilia calcareaandLecanora saxicola. Some of the lichens are alsoused as the food by the human beings. Example is theCetraria islandicaalso known as the Iceland moss. It is also used in thetreatment of many diseases like diarrhea, jaundice, fevers, epilepsy, hydrophobia etc. it is also used in the preparation of culture media.Parmelia saxatilisis used to cureepilepsy. TheUsneaandEvernia furfuraceais used asastringents.Cladonia pyxidatais used to curewhooping cough. It is used forcolouring the fabricsandpaints. Lichensaresource of litmus whichare used in thelaboratoryit isproduced from the lichen Roccella tentoria. It is used for theproduction of perfumessince it can retain the power of retaining the odor it is used. It is also useful in thetanning, brewingand distilling. |
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