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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.
| 45701. |
which plant hormone promotes plant growth |
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Answer» Auxin =overall growthGibberellins =stem growthCytokinins=cell differentition Growth hormones Auxin Auxins,gibberlins, cytokinins |
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| 45702. |
What are haploids |
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Answer» A cell which has aingle type of gametes is known as haploid Cell or organism which has single set of unpaired chromosomes |
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| 45703. |
Diagram of ppen and close stomata |
| Answer» See on Google | |
| 45704. |
Why breathing is harmful through mouth |
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Answer» Because bacteria present in air may enter through mouth so it cause harm but when we breathe through nose tiny hair present filter air passed through them so it is beneficial Because mouth can not clean the tiny dust partical |
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| 45705. |
What is respiration in human being? |
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Answer» It is the cetabolism process in which food is oxidised which is present in the form of glucouse to get energy in the form of ATP.●C6H12O6+6O2===6CO2+6H2O+38molecule ATP Respiration in human beings\tAir is taken in through nostrils and the air is filtered while passing through the nostrils by fine hairs and mucus that line the passage.\tFrom nostrils air passes to throat where rings of cartilages are present to ensure that air passage does not collapse.\tAir reaches lungs from throats and within the lungs the passage divides into smaller and smaller tubes ending into balloon-like structure called alveoli.\tNetwork of blood vessels are present in the alveoli.\tDuring breathing air is sucked into the lungs and fills the expanded alveoli.\tThe oxygen in the alveolar air is taken by the blood vessels after releasing carbon dioxide collected from all the cells of the body in the alveoli.\tLungs contain a residual volume of air during the breathing cycle.\tRespiratory pigments present in the body take up oxygen from lungs and transport to all the cells of the body.\tHemoglobin is the respiratory pigment of human beings present in the red blood cells which has high affinity for oxygen.\tAs carbon dioxide is more soluble in water than oxygen so it is transported mostly in the dissolved form in our blood.\xa0 |
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| 45706. |
Magnificiation produced by lens is +3 . List three info. on the basis of statement |
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Answer» 1) image formed three times large. 2) real and inverted. 3) same side of lens. Lens is convex.Image is magnified.Image is virtual and erect * If the magnification is +ve then the image formed is virtual and erect.*Since magnification is greater than 1 the image formed is enlarged.*The lens is a convex lens since concave lens forms a diminished virtual and erect image.*The object is placed b/w the optic cengre O and the principal focus F. |
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| 45707. |
Functions of stigma, female germ cell and male germ cell |
| Answer» Function of male germ cell: Produced by male reproductive organ (testes in animals, anther in plantsFunction of female germ cell : produced by female reproductive organ (ovary in animals and plants)Function of stigma: It is a sticky portion where pollen grains fall, attach to the surface and germinate. | |
| 45708. |
Science ke board exam me kaise pass hua jaye |
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Answer» Sleep at night become morning tight OR science ka paper easy Science ke chapters padhke |
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| 45709. |
Asexual reproduction takes place through budding |
| Answer» In hydra and yeast. | |
| 45710. |
Why carbon form covalent compound? |
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Answer» Because it has tetra valency Beacuse carbon is a non metal and compounds of non metal form covalent compounds. Because it has 4 valency and so that it cant donate due to nuclear force and cant accept due to large amount of energy is needed therefore it shares electron and form covalent compounds |
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| 45711. |
Decribe the complete process of reproduction of baby |
| Answer» | |
| 45712. |
why is the blood circulation in human heart called double circulation |
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Answer» Because in human body blood passes through the whole body twice, one time from the lungs to heart and other from heart to lungs The blood circulation in human heart is called double circulation because the blood passes through the heart twice in one complete cycle of the body – once through the right half in the form of deoxygenated blood and once through the left half in the form of oxygenated blood. |
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| 45713. |
Mention three factors which can lead to rise to of new species? |
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Answer» Factors that could lead to the rise of a new species are as follow :(i) Natural selection.(ii) Process of genetic drift(iii) Genetic Mutation(iv) Geographical isolation.(v) Environmental factors on the isolated populations.(vi) Reproductive isolation for a long time.(vii) Quantum of genetic variant inherited from one generation to the next. Mutation,Genetic drift, Evolution,Geographic isolation,Change in DNA,Natural selection... |
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| 45714. |
Describe the stucutre. And function of nephron |
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Answer» Nephron is the filtration unit of kidney. It consists of a tubule which is connected with collecting duct at one end and a cup – shaped structure at the other end.This cup-shaped structure is called ‘Bowman’s capsule’. Every Bowman’s capsule contains a cluster of capillaries, called ‘Glomerulus’, within the cup – shaped structure. The blood enters into Glomerulus through afferent arteriole of renal artery and leaves it through efferent arteriole.Functioning of Nephron1. Filtration: Filtration of blood takes place in Bowman’s capsule from the capillaries of glomerulus. The filtrate passes into the tubular part of the nephron. This filtrate contains glucose, amino acids, urea, uric acid, salts and a major amount of water.2. Re-absorption: As the filtrate flows along the tubule useful substances such as glucose, amino acids, salts and water are selectively re-absorbed into the blood by capillaries surrounding the nephron tubule. The amount of water re-absorbed depends on the need of the body and also on the amount of wastes to be excreted.3. Urine: The filtrate which remains after re-absorption is called urine. Urine contains dissolved nitrogenous waste, i.e. urea and uric acid, excess salts and water. Urine is collected from nephrons by the collecting duct to carry it to the ureter. Structure your boo The function of nephron . A nephron responsible for removing Waste product stray irons and excess of water from the blood . The blood through the glomerules which is sourrended by glomerular capsule |
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| 45715. |
State reason for the following The inner wall of the alimentary canal is not digested |
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Answer» Mucus is a liquidy substance which helps in digestion ,and even helps in protecting the inner lining of the stomach from HCL The mucus is a substance secreted along the tube by cells lining its walls .Mucus helps food to slide through the canal without doing too much damage to the lining. It also forms a protective covering which keeps the digestive juices, which are inside the lumen of the canal, from coming into contact with the living cells of the walls. So the inner wall of alimentary canal is not digested. Mucus protect alimentary canal The mucus is a substance secreted along the tube by cells linning it\'s walls mucus help is food slides to through the canal sf |
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| 45716. |
What is Bowen\'s capsule? |
| Answer» Bowman\'s capsule is a cup like structure formed by the proximal end of the nephron.The lumen of Bowman\'s capsule extends through the renal tubule. Bowman\'s capsule encloses a tuft os capillaries called as glomerulus. Bowman\'s capsule and the glomerulus is responsible for the ultrafiltration. Ultrafiltration is the first step of urine formation. | |
| 45717. |
What is reflex action and pathway |
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Answer» Pathway of the reflex action:Suppose a pin is pricked suddenly in the foot. This stimulus received by the receptor organs (skin of the foot) stimulates and sensory fibre (afferent fibre) of the area. The nerve fibre carries the stimulus to the spinal cord through the dorsal root of a spinal nerve. Now form the spinal cord the impulse is passed to one or more motor (efferent) nerve fibres through the ventral root of the spinal cord. The motor nerve fibres stimulate the effector organ (muscles of the root) or organs to an activity so as to deal suitably with the stimulus. In this case pin pricking the portion of the body i.e., foot is immediately lifted.Fig.\xa0A typical reflex reaction, stepping on a pinl initiates a three neuron reflex\xa0 Ya, its given in ncert....... You should see the diagram of reflex arc for its pathway Involuntary and unconscious action of effectors are known as reflex actions.. Action we perform automticAlly |
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| 45718. |
Four difference between lymph and blood |
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Answer» 1. Blood plasma contains RBCs, WBCs and platelets.2. It contains diffusible and non-diffusible proteins like albumin, globulin and fibrinogen.3. It can clot due to presence of more amount of fibrinogen.4. It carries more O2\xa0and more digested food............ Lymph:1. Lymphs are colourless due to absence of RBCs.2. The lymph plasma contains WBCs.3. It contains diffusible proteins.4. It clotes slowly due to presence of less fibrinogen........... | Lymph | Blood | \tIt is a colorless fluid.It is a reddish colored fluid.It is part of the lymphatic systemIt is part of the circulatory systemIt helps in body defense and is a part of the immune system.It is associated with the circulation of oxygen and carbon dioxide, nutrients hormones, waste products etc.It contains plasma and a lesser number of WBCs and platelets.It contains plasma, RBCs, WBCs, and platelets.Carries less amount oxygen and digested food.Carries more amount oxygen and digested food.Lymph plasma lacks proteins.Blood plasma consists of proteins, calcium, and phosphorus.\t|
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| 45719. |
What is placenta and its function |
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Answer» Didi maine be nahi diyaa hai Placenta is a connective tissue which passes through uterine lining the embroy sac And their function The release of metabolic product into maternal fetal circulation Intelligent ka answer shi hai......??? Placenta is a tissue which is disc like shape develops between uterus nd the embryo its function is to fulfill the requirements of the foetus like nutrients,respiration and also excretion |
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| 45720. |
Hai give me answer bhai |
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Answer» Question? Already, given? Check the answer |
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| 45721. |
Why Graphite is called a moderator ? |
| Answer» A graphite reactor is a nuclear reactor that use carbon as a neutron modertor the Chicago pile -1graphite as moderator | |
| 45722. |
Whqt is atmospheric refraction |
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Answer» When the light rays pass through the atmosphere having layers of different densities and refractive indices, then refraction of light takes place. This refraction of light by the earth’s atmosphere is called “atmospheric refraction”.The twinkling of stars is also due to atmospheric refraction. Atmospheric refraction is the deviation of light or electromagnetic wave from the same line as due to the variation of air density as the function of the light of the horizon ? |
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| 45723. |
What is evolution has occurred in stages |
| Answer» Evolution is a step by step process, it does not happen in few years. It takes generations by generations to exhibit variations over a large range. Organisms get adapted to their habitat by bring about certain changes in their structure. These changes are called as adaptations which bring about variations in the evolution. These variations are carried on to successive generations by natural selection...? | |
| 45724. |
Blood vessel that carries blood from heart to the lungs |
| Answer» Pulmonary artery is the blod vessel which carries blood from ? to the lungs | |
| 45725. |
Diagram of brain and what is a gene |
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Answer» Gene is structural and functional unit of DNA which synthesize protein from parents to progeny Gene are special units of DNA which contains the information for protein synthesis.For example gene for tallness is TT. Gene is the functional unit of DNA |
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| 45726. |
What is mass market |
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Answer» Large amount of exchange of commodities takes place Mass market is one in which a large amount of exchange of commodities takes place |
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| 45727. |
Why hydrogen is better fuel then CNG? |
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Answer» It is easily available In large amount and burn with formation of waterso it is better fuel than cng it do not release carbon dioxide Because burning of H produces water only.But CNG produces water and carbon dioxide, As CO2 is a greenhouse gas hence hydrogen is a much better fuel, also calorific value of hydrogen is higher than CNG. ? |
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| 45728. |
How evolution and classification are linked? |
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Answer» Classification shows the evolutionary relationships bw organisms.The more characters two have in common, the more closely they will be related.And the more closely they are related, the more recently the have had common ancestors.Even the classification scheme of organisms match their evolutionary scheme. ☺️ We classify organism based on evolution Classification show evolutionary relationship |
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| 45729. |
What is law of reflection ? What are mirror ? |
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Answer» 1. Angle of incidence is always equal to angle of reflection2. The incident, reflected, and the normal ray all lie on the same plane.Mirror- any shining surface which reflects light and form image 1 angle of incidence always equal to angle of reflection 2 the incident ray,reflected ray and normal all लिए in same plane |
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| 45730. |
What is chemistry? |
| Answer» Chemistry is the scientific discipline involved with elements and compounds composed of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a reaction with other substances...Read from Wikipedia....explore more | |
| 45731. |
Describe structure and function of nephron |
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Answer» Nephron\xa0is the filtration unit of kidney. It consists of a tubule which is connected with collecting duct at one end and a cup – shaped structure at the other end.This cup-shaped structure is called\xa0‘Bowman’s capsule’. Every Bowman’s capsule contains a cluster of capillaries, called ‘Glomerulus’, within the cup – shaped structure. The blood enters into Glomerulus through afferent arteriole of renal artery and leaves it through efferent arteriole.Functioning of Nephron1. Filtration: Filtration of blood takes place in Bowman’s capsule from the capillaries of\xa0glomerulus. The filtrate passes into the tubular part of the nephron. This filtrate contains glucose, amino acids, urea, uric acid, salts and a major amount of water.2. Re-absorption: As the filtrate flows along the tubule useful substances such as glucose, amino acids, salts and water are selectively re-absorbed into the blood by capillaries surrounding the nephron tubule.The amount of water re-absorbed depends on the need of the body and also on the amount of wastes to be excreted.3. Urine: The filtrate which remains after re-absorption is called urine. Urine contains dissolved nitrogenous waste, i.e. urea and uric acid, excess salts and water. Urine is collected from nephrons by the collecting duct to carry it to the ureter. Nephron is the filtration unit of kidney. It consists of a tubule which is connected with collecting duct at one end and a cup – shaped structure at the other end. ... This filtrate contains glucose, amino acids, urea, uric acid, salts and a major amount of water. |
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| 45732. |
What is another name for parathormone hormone? |
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Answer» Baruch kiddo Kim MDM Lizzie handleable fuddy BBC JD UDD us if BC HF DJ JD sy ts cl mein Liz Parathyrin |
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| 45733. |
Define evolution and how does it occur ? |
| Answer» Evolution is the sequence of gradual changes which take place in the primitive organisms over millions of years in which new species are produced | |
| 45734. |
Tell me some plant hormones with there function ???? |
| Answer» | |
| 45735. |
How does muscle cells move |
| Answer» The muscle cells move by contraction and relaxation by utilizing the energy in the form of ATP. During contraction, the muscles fibres shorten, the muscle pulls on the ligaments that connect the bones and the movable body parts. During relaxation the muscle fibres come to their original position. | |
| 45736. |
Explain saponification reaction. |
| Answer» The reaction in which a fat (oil)is burned with sodium hydroxide giving out soap is known as Saponification reaction | |
| 45737. |
Noble gas has 2 electron |
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Answer» If you are asking which so it is helium So what No 8 electrons |
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| 45738. |
Explain Three law of mendel |
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Answer» Law of domination, law of segregation, law of independent assortment Geetanand he mendel not mendelèev 1)Law of independence2)Law of assortment3)Law of dominance *explain*Sry it is to long Hybrid monohybrid dihybrid 1)they were arranged according to increasing atomic mass2)he left space for some future discovering elements3)he renamed the repeating of properties as periodicity |
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| 45739. |
What is the meant by vestigial organs |
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Answer» The organs which are not use of human beings are known as vestigial organs. The organs which are not needed or are not essential in human body are known as vestigial organs.. |
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| 45740. |
How does zigote form |
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Answer» When male and female gamete fuses it forms zygote.. By fertilization of sperm and ovum |
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| 45741. |
What is meant by the angle deviation? |
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| 45742. |
What happens,when silver nitrate solution is added to sodium chlorid solution |
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Answer» Nacl+AgNo3=AgCl+NaNo3 Silver chloride (AgCl) and sodium nitrate is formed |
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| 45743. |
Explain mendel mono hybris experiment |
| Answer» Monohybrid cross\xa0is the study of inheritance of one pair of contrasting characters. Through monohybrid cross experiments, Mendel proposed the Laws of Dominance and Law of segregation. For example, Tall stemmed plants are crossed with short stemmed plants. A new ratio of 3:1 is formed in the F2 generation. 75% individuals are dominant and 25% are recessive individuals.\xa0 | |
| 45744. |
Explain implantation in placenta? |
| Answer» Placenta is the tissue on upper side of uterus it develops when zygote get implanted on uterus wall. Placenta develop itself and form umbilical cord that connect to baby\'s body to give it nutrition and take its waste out | |
| 45745. |
Why Does Twinkling of stars happens ? |
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Answer» As per my study at school it doesn\'t twinkle it seems to be twinkle because of the mediums present between stars and us They twinkle because of atmospheric refraction phenomena. As we go up in atmosphere each layer gets denser and the light coming from denser medium to rarer ( earth) the light ray bends towards the normal resulting in apparent position and physical conditions of atmosphere are not always same so sometime light enters earth and sometimes don\'t resulting in twinkling of stars. Star do not twinkle ,it apperars to be twinkle beacause of layers of different atmosphere which have have different refractive index as star light enters our earth atmosphere it get refracted again and again and it appears to be as stars are twinkling ????? It\'s difficult to write that much and i can not send image of answers on this Please check your ncert for this |
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| 45746. |
State the method of vegetative propagation used for mango and Jasmine. |
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Answer» Topprr ?? Grafting |
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| 45747. |
Is there any difference between auricle and atrium? |
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Answer» What is meant by ear conical? Atrium- it is the upper chamer of heart divided into two parts right and left atrium ??Auricle- is the conical muscular pouch which arises from atrium mainly like shape of ear conical???? |
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| 45748. |
We do not see frogs and lizards in winter.Give reason. |
| Answer» Because they go in hibernation ,is a state of inactivity and metabolic depression. | |
| 45749. |
Why hydrogen takes place in the metal reactivity series |
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Answer» Hydrogen being a non metalis placed in the reactivity series because by loosing its one electron it can also gain a positive sign just like other metals Because it has the ability to lose its electron..... In the periodic table, hydrogen is placed is the first row just before inert gas Helium. Because it has one electron in its valence shell, it shows reactivity that resembles electropositive metals (lose an electron and become H+) and reactivity that resembles electronegative non-metals (gain an electron and become H-). Depending on what it reacts with, hydrogen can form an acidic substance that releases H+ or protons (e.g. HCl) or a basic substance that releases H- or hydride ion (e.g. LiH). This is the reason hydrogen is placed in the reactivity series of metals. |
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| 45750. |
What is magnatic field |
| Answer» It is the place where the force of magnet is experienced | |